Answer:
1. 8.0kg * m/s
2. The same as before the collision
3. The force will decrease
4. 14 m/s
The momentum before the collision and after the collision will be the same hat is 8 Kgm/s, and the club head slows down by 13.8 m/s after hitting the ball.
According to the law of conservation of momentum, the total momentum of a system before and after the collision must be the same.
Total Momentum = vector sum of (mass × velocity) of all the bodies
Mass of club head = 200g = 0.2kg
initial velocity of club head = 40 m/s
final velocity of the club head = v
mass of the ball = 46g = 0.046 kg
initial velocity of the ball = 0 m/s
final velocity of the ball = 60 m/s
Momentum before collision = 0.2 x 40 = 8 kgm/s
Now, by conservation of momnetum:
Momentum before collision = Momentum after the collision = 8 kgm/s
Momentum after the collision = momentum of the ball + momentum of the club head after the collision
8 = 0.046 x 60 + momentum of the club head after the collision
momentum of the club head after the collision = (8 - 2.76) kgm/s
momentum of the club head after the collision = 5.24 kgm/s
0.2 x v = 5.24
v = 5.24/0.2
v = 26.2 m/s is the final velocity of the club head.
the club head slows down by 40 - v = 40 - 26.2 = 13.8 m/s after hitting the ball.
if a manufacturer makes a golf ball that compresses more than a traditional golf ball when struck by a club the average force on the ball will decrease. Since force is defined as the rate of change of momentum. If the ball can be compressed more, it will take more time to transfer momentum to the ball, which will reduce the rate of change of momentum of the ball. Hence, the average force will decrease.
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Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. There is now a negative ion with a charge -2e at this terminal. What are the electric potential and electric potential energy of the negative ion relative to the electron?
The electric potential and the electric potential energy are both twice as much.
The electric potential is twice as much and the electric potential energy is the same.
The electric potential is the same and the electric potential energy is twice as much.
The electric potential and the electric potential energy are both the same.
The electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.
The electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.
The electric potential remains the same, while the electric potential energy of the ion is twice that of a single electron, because potential energy is proportional to the charge of the ion.
Explanation:When a neutral atom gains two electrons at a negative terminal, it becomes a negative ion with a charge of -2e. The electric potential at a point is defined as the electric potential energy (EPE) per unit charge at that point. Since potential energy is related to the force and distance between charges, it is useful to refer to the formula for the Coulomb energy of two particles having opposite elementary charges Epot=-e2/(4πε0r). In this case, when the charge of an ion becomes -2e, the electric potential at the position of the ion remains the same, because it is dependent on the electric field and the distance from the charge, not on the amount of charge on the ion itself.
However, the electric potential energy is proportional to the amount of charge on the ion. Therefore, if a single electron has a certain potential energy, a negative ion with a charge of -2e will have twice that potential energy. Hence, the correct statement is that the electric potential remains the same, while the electric potential energy is twice as much as that of a single electron.
The mass ratio of the oxygen ion to the electron is irrelevant to this question, as it does not factor into the calculations of electric potential and electric potential energy in this context.
In a simple DC motor, the ____ reverses the current every half revolution of the loop.
a. battery
b. wire
c. armature
d. stator
In a simple DC motor, the Armature reverses the current every half revolution of the loop.
Answer : Option C
Explanation:
DC motor works on the principle of electromagnetic induction that when a current carrying conductor placed in a magnetic field is said to exert a mechanical force.
It converts electrical energy into mechanical energy. In dc motor, the armature rotates in clockwise or anti clockwise direction. When the armature rotates the current reverses its direction for every half rotation which then passes on to the commutators, brushes and slip rings.
In the laboratory, you have arranged to have a magnetic field that points north with a strength of 0.1 T and an electric field that points downward with a strength 1.2 × 107 N/C. An electric charge with a magnitude 7×10−9 C passes through the laboratory. The force on the charge due to the electric field is given by F = q E. The force on the charge due to the magnetic field is given by F = q v B, where v is the speed of the particle. The direction of the magnetic force is given by the right-hand rule. Neglect the gravitational force. What direction would the charge have to travel in order for it to pass through the room undeflected? 1. east 2. west 3. south 4. north 5. upward 6. downward
Answer:
Choice 1: The particle shall move eastward as it travels through the room.
The electrical and magnetic force on the particle shall balance no matter whether the charge on the particle is positive or negative.
Explanation:
The question gives the magnitude of the charge on the particle but doesn't say anything about the sign of the charge on the particle. However, it turns out that whether this sign is positive or negative make no difference.
Start by considering the case that the charge on the particle is positive. What will be the direction of the electrical force on the particle?
The direction of an electrical field is same as the direction of electrical force on a particle with a positive charge. The electrical field in this room points downwards, which means that the direction of the electrical force on a positive charge will also point downward.
The particle will deflect downwards if the electrical force is the only force that acts on it. For the particle to go through the room undeflected, the net force on the particle shall be zero. The magnetic force shall balance the downward electrical force. In other words, the magnetic force on the positive particle shall point upwards.
The right-hand grip rule relates the following:
The direction of the nominal current due to a moving charge (in the same direction of the velocity of a positive charge and opposite of that of a negative charge,) The direction of the magnetic field, andThe direction of the magnetic force on the moving charge.Here's how the rule work:
Open the right hand such that all five fingers are in the plane of the palm. Start by pointing all four fingers of the right hand, excepting the thumb, in the direction of the nominal current (again, that's the same as the direction of the velocity of a positive charge and opposite of that of a negative charge.)Rotate the right forearm, such that when the four finger are bent inward 90° out of the palm, they point in the direction of the magnetic field The thumb will now point in the direction of the magnetic force on the moving charge.In this case, the magnetic field points toward the north (to the front). Therefore, when the four fingers are turned by 90° out of the palm, they shall point to the north. The magnetic force points upwards, such that the thumb shall point upward. Now, open the right hand such that the four fingers are in the plane of the palm. The four fingers now point toward the right, which is the same as east. In other words, by the right-hand rule, the conventional current shall point to the east of the room. The particle is assumed to be positive. To generate that eastbound current, the particle shall also move eastwards.
Now, what if the charge on the particle is negative?
The direction of the electrical force on the negative charge will be the opposite as the direction of the electrical field. That is: the electrical force on the particle points upwards.The magnetic force on the particle shall point downwards to balance the electrical force.Apply the right-hand grip rule. Again, the four finger will point towards north (to the front) in the direction of the magnetic field when turned 90° out of the palm. However, the thumb shall point downwards in the direction of the magnetic force. Now, open the palm and the four fingers will point to the left (to the west.) That's the direction of the conventional current. However, the particle is now assumed to be negative. To generate a westbound conventional current, the negative charge needs to move in the opposite direction to the east.In other words, the charged particle shall move towards east no matter whether the charge on the particle is positive or negative.
What is the only possible value of ml for an electron in an s orbital?
Answer:
zeroExplanation:
[tex]m_l[/tex] is the magnetic quantum number.
The only possible value for the magnetic quantum number for an electron in an s orbital is 0.
The first three quantun numbers are:
n: principal quantum number. It may have positive integer values: 1, 2, 3, 4,5, 6, 7, ...[tex]l[/tex] : Azimuthal or angular momentum quantum number. It may have integer values from 0 to n - 1.This quantum number is related to the type (or shape) of the orbital:
For s orbitals [tex]l=0[/tex]
For p orbitals [tex]l=1[/tex]
For d orbitals [tex]l=2[/tex]
For f orbitals [tex]l=3[/tex]
In this case, it is an s orbital, so we have [tex]l=0[/tex].
[tex]m_l[/tex] , the third quantum number can have integer values [tex]{from-l}[/tex] to [tex]{+l}[/tex]Since, for the s orbitals [tex]l=0[/tex] , the only possible value for [tex]{m_l}[/tex] is zero.
The only possible value of the magnetic quantum number (ml) for an electron in an s orbital is 0. This is because s orbitals only have one orientation, therefore the ml value can't be anything other than 0.
Explanation:The magnetic quantum number (ml) for an electron in an s orbital is always 0. The magnetic quantum number is an integer that specifies the orientation of an orbital around the nucleus, and s orbitals only have one possible orientation. This is why the ml value for an s orbital will always be 0. It is not possible for it to have any other value. For example, p orbitals, which have three orientations, can have ml values of -1, 0, or 1.
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A voltaic cell converts chemical energy to
Voltaic cells use chemical reactions to generate electrical energy, as well as the reverse process.
This type of cell is mainly composed of the anode (a metal electrode where oxidation occurs) and the cathode (a metal electrode where the reduction occurs). These electrodes are placed in two compartments separated by a porous plate or membrane and immersed in a medium containing ions.
This is how, when the chemical reaction of oxide-reduction occurs, electricity is generated.
A thin, square metal plate measures 14 cm on each side and has emissivity of 0.60. The plate is heated to a temperature of 745°C. What is the rate at which the plate radiates energy ? The Stefan-Boltzmann constant is 5.67 × 10-8 W/(m2 ? K4). Remember that the plate will radiate energy from both its top and bottom surfaces.
Final answer:
To determine the rate at which a heated metal plate radiates energy, the Stefan-Boltzmann law is applied, incorporating the given emissivity, surface area, and absolute temperature to calculate a radiation rate of approximately 450.46 Watts.
Explanation:
To calculate the rate at which a square metal plate radiates energy, we need to apply the Stefan-Boltzmann law of radiation. The formula is: P = eT4, where o is the Stefan-Boltzmann constant (5.67 x 10-8 W/(m2 K4)), A is the surface area of the object, T is the absolute temperature in kelvin, and e is the emissivity of the material.
Given the square metal plate's side length of 14 cm (which we convert to 0.14 m for consistency in units), emissivity of 0.6, and a temperature of 745C (which is 1018 K in absolute temperature), we first calculate the surface area (A) of one side of the plate: A = (0.14 m)2 = 0.0196 m2. Since the plate has two sides, we double the area to account for both the top and bottom surfaces, resulting in 0.0392 m2.
The rate of energy radiated from the plate is then: P = (5.67 10-8 W/(m2 K4)) (0.0392 m2) (0.6) (1018 K)4. Calculating this we get:
P = 5.67
10-8
x 0.0392 m2
x 0.6
x (1018 K)4 = 450.46 Watts.
The metal plate thus radiates energy at a rate of approximately 450.46 W.
What are the basic si units for the wavelength of light?
Answer:
Meter (m)
Explanation:
The wavelenght of a light wave is a measure of the distance between two successive crests (or two successive troughs) of a light wave.
Since the SI units for the distance is the meter (m), then the SI unit for the wavelength is also the meter (m).
Wavelength is related to the frequency of the light wave by:
[tex]\lambda=\frac{c}{f}[/tex]
where
c is the speed of light
f is the frequency of the light
Magnetic fields are produced by particles that are
Answer:
Moving point charges, such as electrons, produce complicated but well known magnetic fields that depend on the charge, velocity, and acceleration of the particles.
Answer:
moving and charged
Explanation:
More solar radiation is absorbed by earth’s surface than by __________.
Answer:
The atmosphere
Explanation:
About how many centimeters will make an inch?
02
O 10
100
200
Answer:
The answer that is most accurate would be the first one.
Explanation:
Actually, there are 2.54 centimeters in an inch. Use that as a tool for converting inches to centimeters:
1 inch x 2.54 = 2.54 centimeters.
2 inches x 2.54 = 5.08 centimeters.
3 inches x 2.54 = 7.62 centimeters.
4 inches ...........
Which color of visible light has the shortest wavelength?
Answer: violet!
Explanation:
An atom with atomic number 12 would have what type of chemical behavior in bonding with other elements?
An atom with atomic number 12 will tend to accept or share electrons in order to achieve a stable electron configuration.
Explanation:The chemical behavior of an atom is largely determined by the behavior of the electrons in its valence shell. Atoms with eight electrons in their valence shell tend to be stable and are unlikely to participate in chemical reactions, while atoms with fewer than eight electrons in their valence shell tend to accept, donate, or share electrons in order to achieve a stable electron configuration.
An atom with atomic number 12, such as carbon, has six electrons in its valence shell. Carbon will tend to form chemical bonds with other elements by either accepting or sharing electrons, depending on the specific situation.
Estimates show that the total energy output of the sun is 5 × 1026 j/s. what is the corresponding loss in kg/s of the sun?
Estimated total energy output IN ONE SECOND = 5 x 10²⁶ Joules .
Energy = mass · c² ( Albrecht Einshtein)
c = 3 x 10⁸ m/s
c² = 9 x 10¹⁶ m²/s²
5 x 10²⁶ Joules = mass · (9 x 10¹⁶ m²/s²)
mass = (5 x 10²⁶ Joules) / (9 x 10¹⁶ m²/s²)
mass = (5 x 10²⁶) / (9 x 10¹⁶) kg
mass = (0.55... x 10¹⁰) kg
mass = 5.55... x 10⁹ kilograms
Look at that for a second. Then think about it for another second.
It's telling us that at its present rate of energy output, the sun is losing more than 5 and a half Billion kilograms of mass every second. And when we read other things about the sun, they say that the sun is expected to continue doing what it's doing for another 4 or 5 Billion years !
Gives ya some idea of the size and mass of the Sun, doesn't it !
The mass of the Sun is approximately 1.989 × 10³⁰ kg, and the Sun is able
to convert mass to energy to energize the Earth for billions of years.
Loss in mass of the Sun per seconds is approximately 5.563 × 10⁹ kg.Reasons:
The energy, E, from the Sun comes from nuclear fusion hydrogen atom
protons to form a helium atom with a reduction in mass.
According to Albert Einstein's mass energy equivalence, E = m·c²
[tex]The \ mass \ converted \ to \ energy, \ m = \dfrac{E}{c^2}[/tex]
Where;
c = The speed of light = 299,792,458 m/s
Total energy output of the Sun, E = 5 × 10²⁶ j/s
The loss in mass = The mass converted into energy
[tex]The \ loss \ in \ mass = \dfrac{5 \times 10^{26} \ J/s}{\left(299,792,458 \ m/s\right)^2} \approx 5.563 \times 10^9 \, kg[/tex]
The loss in mass per second ≈ 5.563 × 10⁹ kg.
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Difference between series and parallel circuits
In series circuits, components are connected in a single path, sharing the same current but dividing the total voltage. In parallel circuits, components are connected across common points, sharing the same voltage but dividing the current.
Series Circuits:
A series circuit consists of a single path for current to flow. This means that all components are connected one after another, like a chain.
In a series circuit, the current (I) is the same through all components because there is no alternative path for it to take. If you were to measure the current at any point in the circuit, you would get the same reading.
The total voltage (V) supplied by the source is divided among the components. The sum of the voltage across each component equals the total voltage supplied by the source. This can be expressed as:
[tex]V_{total[/tex] = V₁ + V₂ + V₃ +...
Parallel Circuits:
Parallel circuits have multiple paths for current to flow. Each component is connected across the same two points (called nodes), meaning that all components share the same voltage.
In a parallel circuit, the voltage (V) across each component is the same and equals the voltage of the source. Thus, each component can operate independently at the same voltage level. This can be expressed as:
V₁ = V₂ = V₃ = [tex]V_{total[/tex]
The total current supplied by the source is the sum of the currents flowing through each branch of the circuit. This can be expressed as:
[tex]I_{total[/tex] = I₁ + I₂ + I₃ +...
Where is the magnetic field the strongest
Answer:
at either point of the magnet
Explanation:
its equally strong at the north pole when compared with the south pole.
Hello There!
A magnet has two poles called the north pole and the south pole. The magnetic field is always strongest at the poles of the magnet.
Help me please !!!!!!! Thank you
Answer:
Correct
Water boils at a temperature below 100°C at higher altitudesWater expands on freezing.The density of water decreases on freezing.Water boils at 100°C under normal pressureIncorrect
Water contracts on freezingWater boils at a temperature below 100°C in a pressure cookerExplanation
At higher altitudes, water boils at a temperature lower than 100°C.The atmospheric pressure at higher heights is lower, so the amount of heat required to create the vapor pressure is lower.Water expands as it freezes.This is only possible when it attains 4°C.However, before this temperature, water contracts will decrease in temperature as any other fluid material will behave.Water reaches its maximum density at 4°C.Beyond this temperature, its density reduces as it nears the freezing point.The boiling point of pure water under normal atmospheric pressure is 100°C.Addition of other solute substance will affect this boiling point in that it will increase with some degrees.For example, salt water has a boiling point a bit higher than that of pure water.In a pressure cooker, the water is sealed inside the machine, hence all the heat generated by the process helps in increasing the temperatures inside the cooker.The water thus is super-heated and the boiling point is more than 100°C.
The average kinetic energy of water molecules is greatest in
The average kinetic energy of the water molecules is greater in its gaseous state (in the form of water steam).
This is because in the gaseous state the water molecules are well separated from each other and can move freely in all the available space they have; because there are no cohesion forces that bond them.
In contrast to the liquid and solid state, in which the molecules have less movement.
Under what conditions of temperature and pressure are gases most likely to behave ideally?
Answer:
A gas behaves more like an 'ideal' gas at a higher temperature and lower pressure.
Explanation:
do to intermolecular forces becomes less significant compared to kinetic energy and the size of the molecules become less significant to the empty space between them.
Gases are most likely to behave ideally at high temperature and low pressure.
Under what conditions do most gases work ideally at all temperatures and pressures?Gases tend to operate ideally at low and high temperatures because potential energy is less important than kinetic energy due to intramolecular forces. Also, the size of the molecule is less important in relation to the free space between the molecules.
Gasworks very ideally at high temperatures and low pressures. High temperature means that the molecules move fast and do not stick together. Low pressure means that the molecules are farther apart and have less interaction.
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Which of these is NOT a type of satellite?
A. land-based
B. environmental
C. communications
D. global positioning systems
Explanation:
An artificial satellite is one that is launched into space to orbit the Earth (or another body of the solar system) for various purposes.
In this sense, the characteristics of an artificial satellite will depend on its purpose and functionality. From there we can list: meteorological satellites (for weather) , telecommunications satellites, remote sensing satellites, global positioning systems satellites, environmental satellites, research satellites, among others.
In addition, their orbits can be classified according to their height and inclination, depending on the use they have.
On the other hand, one of the main conditions for a satellite to be considered as such is that it must be kept orbiting. This means, it must not touch land during its useful life, even if it remains in constant contact with its earth based control stations.
Therefore, a land-based is not a type of satellite.
A DC motor's magnet has a magnetic field that ____ the wire loop's magnetic field, therefore causing the loop to rotate.
a. equalizes
b. deflects
c. attracts
d. none of these
b. deflects. A DC motor's magnet has a magnetic field that deflects the wire loop's magnetic field, therefore causing the loop to rotate.
When a conductor, through which an electric current passes, is immersed in a magnetic field, it experiences a deflects force according to the Law of Lorentz creating as result that the loop rotate.
A DC motor's magnet has a magnetic field that deflects the wire loop's magnetic field, therefore causing the loop to rotate.
Answer : Option B
Explanation:
It is said that electric field is always associated with the magnetic field and they influence each other. When a wire carrying current is placed near a magnetic compass, the needle present in the compass will deflect showing that there is a magnetic field associated with the set up. Every magnet has a magnetic field associated with it which causes deflection thereby making the loop to rotate.
Each water molecule is joined to _____ other water molecules by ____ bonds.
Answer:
D) four ... hydrogen
Explanation:
Each water molecule is joined to four other water molecules through hydrogen bonds. The polar nature of water and difference in electronegativities between hydrogen and oxygen causes a dipole-dipole interaction, forming hydrogen bonds.
Explanation:Each water molecule is joined to four other water molecules by hydrogen bonds. Water has a polar nature due its structure and the difference in electronegativities between hydrogen and oxygen. This causes a dipole-dipole interaction within and between the water molecules. The slightly positive hydrogen atoms of one molecule attract the slightly negative oxygen atoms of the nearby molecules, forming what is commonly known as a hydrogen bond. The connectivity within the water molecules could be depicted as a tetrahedron with the hydrogen-bonded water molecules on the vertices.
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If the resistance in a circuit connected to a constant current is halved, how is the voltage in the circuit affected?1. The voltage remains constant.2. The voltage is reduced by a factor of 4.3. The voltage is quadrupled.4. The voltage is reduced by a factor of 2.5. The voltage is doubled.
Answer:
4. The voltage is reduced by a factor of 2
Explanation:
The relationship between voltage, current and resistance in a circuit is given by Ohm's law:
V = RI
where
V is the voltage
R is the resistance
I is the current
In this problem,
the resistance in the circuit is halved: R' = R/2
the current is constant : I' = I
So the new voltage is
[tex]V' = I' R' = I (\frac{R}{2})=\frac{1}{2} (IR) = \frac{V}{2}[/tex]
so the voltage is reduced by a factor 2.
What is the ultimate source of energy for most ecosystems
Answer:
The sun
Explanation:
The sun is the only star in our solar system. It provides the ultimate source of energy for all parts of an ecosystem.
Light energy from the sun is used to drive photosynthetic processes. This process in turn provides food for all organism.
The energy of the sun is produced from the fusion of hydrogen nuclides at great temperatures within the sun. The fusion process releases the energy which every part of the solar system needs.
Transformers will not work on ______ electrical systems.
a. DC
b. high-current
c. low-current
d. low-voltage
Transformers only work with AC.
If you put DC into a transformer, all that comes out is smoke.
(a)
Transformers will not work on direct current in electrical systems.
Answer: Option A
Explanation:
Transformers work only on the alternate current of electrical system. And they are not suitable to work upon with the direct current. As the direct current has the property to transfer high voltage directly and is unable to direct the current with high and low voltages, causes the transformer to burn out the coil leading to burning of the transformer circuit and causing smoked transformers.
A 710kg car drives at a constant speed of 23m/s . It is subject to a drag force of 500 N. What power is required from the car's engine to drive the car (a) on level ground? (b) up a hill with a slope of 2.0∘ ?
(a) 11500 W
The power required for the car's engine is given by
P = Fv
where
F is the force that the engine must apply
v = 23 m/s is the velocity of the car
In this situation,the car is moving at constant velocity: this means that its acceleration is zero, so the net force on the car must be zero. Since there is a drag force of 500 N against the motion of the car, this means that the force applied by the engine in the forward direction must also be 500 N:
F = 500 N
So the power erogated by the engine is
P = (500 N)(23 m/s)= 11500 W
(b) 17084 W
In this situation, there is not only the drag force opposing the motion of the car, but also the component of the weight which is parallel to the incline.
This component is given by
[tex]W_p = mg sin \theta[/tex]
where
m = 710 kg is the mass
g = 9.8 m/s^2 is the acceleration of gravity
[tex]\theta=2^{\circ}[/tex] is the slope of the incline
Substituting,
[tex]W_p = (710 kg)(9.8 m/s^2)sin 2^{\circ} =242.8 N[/tex]
So now the total backward force against the motion of the car is the sum of the drag force (500 N) and this force:
F = 500 N + 242.8 N = 742.8 N
And so the force applied by the engine must be the same; so the power erogated will be
P = (742.8 N)(23 m/s)= 17,084 W
To maintain its speed, the car's engine needs to provide power to overcome opposing forces. On level ground, the power needed is 11.5 kW, which is used to overcome the drag force. On a slope of 2°, the power needed is 17.23 kW, used to overcome both the drag force and the additional force due to the uphill angle.
Explanation:To calculate the power required to maintain the car's constant speed, we need to use the formula for power, which is Power (P) = Force (F) x Velocity (v). In this scenario, the force is the drag force namely the air resistance opposing the car's motion.
(a) On level ground, the power required would be P = F x v = 500 N x 23 m/s = 11,500 W or 11.5 kW. So, the car's engine needs to provide a power of 11.5 kW to maintain its speed on level ground.
(b) When the car is driving uphill, the engine needs to work against the gravitational force as well. The additional force due to the uphill slope can be calculated using F = m x g x sin(θ), where m is the car's mass, g is the acceleration due to gravity, and θ is the slope angle.
Applying the values, F = 710 kg x 9.8 m/s² x sin(2°) = 249.2 N. Thus, the total force the engine needs to overcome is 500 N (drag) + 249.2 N (gravity) = 749.2 N. Using the power formula, P = F x v = 749.2 N x 23 m/s = 17,231.6 W or 17.23 kW. Therefore, the car's engine needs to provide a power of 17.23 kW to drive up a 2° hill.
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A"car"initially"at"rest"experiences"a" constant"acceleration"along"a"horizontal" road."the"position"of"the"car"at"several" successive"equal"time"intervals"is" illustrated"here. between"which"adjacent"positions"is"the" change"in"kinetic"energy"of"the"car"the" greatest
In the process of peppering the question with those forty (40 !) un-necessary quotation marks, you neglected to actually show us the illustration. So we have no information to describe the adjacent positions, and we're not able to come up with any answer to the question.
answer correctly for brainlyest!
A book is placed on a table and a bike moves on a road. Which statement is correct?
[] Both the book and the bike have kinetic energy.
[] Both the book and the bike have potential energy.
[] The book has potential energy and the bike has kinetic energy.
[] The book has kinetic energy and the bike has potential energy.
Answer:
c. The book has potential energy and the bike has kinetic energy.
Explanation:
Answer:
C (third one down).
Explanation:
Always take a look at the formulas.
KE = 1/2 mv^2
PE = mgh
What the KE formula is telling you is that there is motion (v). Only one of the two objects is moving -- the bike.
The PE formula has a weight that (if it is helped) is capable of falling a distance h. The book has a PE value.
The answer is C
On earth which of the following are being investigated to contain fusion reactions
Check all the apply
A. Inertial Confinement
B. Magnetic Confinement
C. Insulated Containers
D. Lead Blankets
Asap
Answer:
Magnetic Confinement.Inertial Confinement.Explanation:
Magnetic Confinement Fusion is studied to generate thermonuclear energy through fusion power, using magnetic fields to transform matter into plasma.
On the other hand, Inertial Confinement Fusion is a type of research aimed to produce nuclear fusion reactions through heat and compression of a fuel.
These two researches comprehend the Fusion Energy Research, which is aimed to produce and develop plasma as a energy resource.
The correct options are A). Inertial Confinement and B). Magnetic Confinement.
What is a Magnetic Confinement and Inertial Confinement?Magnetic Confinement Fusion, that is studied to generate thermonuclear energy through fusion power, using magnetic fields to transform matter into plasma.
Inertial Confinement Fusion is a type of research that aimed to produce nuclear fusion reactions through heat and compression of a fuel.
These two researches involves the Fusion Energy Research, which is aimed to produce and develop plasma as a energy resource.
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Maximum scatter radiation to the operator occurs when
Answer:
When the x-ray tube is above the patient
Explanation:
Maximum scatter radiation to the operator occurs when the x-ray tube is above the patient.
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Al and Ben are drivers for SD Trucking Company. One snowy day, Ben left SD at 8:00 a.m. heading east and Al left SD at 11:00 a.m. heading west. At a particular time later that day, the dispatcher retrieved data from SD’s vehicle tracking system. The data showed that, up to that time, Al had averaged 40 miles per hour and Ben had averaged 20 miles per hour. It also showed that Al and Ben had driven a combined total of 240 miles. At what time did the dispatcher retrieve data from the vehicle tracking system? A. 1:00 p.m. B. 2:00 p.m. C. 3:00 p.m. D. 5:00 p.m. E. 6:00 p.m.
Answer:
B
Explanation:
Let's say Da is the distance Al drives and Db is the distance Ben drives. And let's say that t is the amount of time that Al drives.
Using the distance equation, we can say:
Da = 40t
Db = 20(t + 3)
We know that Da + Db = 240, so:
240 = 40t + 20(t + 3)
240 = 40t + 20t + 60
180 = 60t
t = 3
So Al had been driving for 3 hours when the dispatcher retrieved the data. Al started driving at 11 AM, so the dispatcher must have retrieved the data at 2 PM.