Answer:
no, because the waves do not have the same amplitude
Explanation:
A force that causes an object to change its motion is called a(n) _______
a. unbalanced force
b. resistant force
c. compound force
d. unnatural force
Answer:
I believe it is A. Unbalanced.
Explanation:
Hope i helped you!
Unbalanced force causes an object to change its motion.
Answer: Option A
Explanation:
A force can be explained as push or a pull that has the tendency to change the velocity of a mass.
The force that makes any change in the movement of an object or body is known to be an unbalanced force. These forces are not equal and opposite. When an object is placed in a rest position and when unbalanced force acts on it, this will not make the object to move.
Example: Force applied against the ball.
The forces whose size is equal and opposite in their direction are known as balanced force. These forces will not make any change in motion of a body. When an object is placed in a rest position and when balance force acts on it, this will not make the object to move.
Example: Pushing against a wall.
Water moves to the top of tall trees because of _____.
capillary action
surface tension
capillary action and evaporation
vapor pressure
Answer:
capillary action and evaporation
Explanation:
The pulling effect of evaporating water from the leaves and other parts of plants provides the driving mechanism for water to reach greater parts in a plant. Evaporation of water during a hot day would cause water to rise through conduit-like pipes in plants which leads to rise of water from the root to areas that lacks them.
This process is even made much more easier by capillary action which is the unaided movement of water or fluid in a narrow tube as a result of its own pressure. Evaporation would facilitate the process of capillary action and together, they both drive water to greater reaches of plants from the root.
20 POINTS HELP FAST PLEASE!!
What two forces are required for generators and electric motors to work?
A: electricity and magnetism
B: magnetism and thermal
C: magnetism and radiant
D: electricity and thermal
In an electric motor, the energy transformation begins as ----
A: electrical and becomes chemical
B: mechanical and becomes electrical
C: mechanical and becomes chemical
D: electrical and becomes mechanical
What two forces are required for generators and electric motors to work? “A” Electricity and magnetism.
In an electric motor, the energy transformation begins as “A” Electrical And becomes mechanical.
(a) the two forces required for generators and electric motor to work is electricity and magnetism.
(b) In an electric motor, the energy transformation begins as electrical and becomes mechanical.
According to Faraday's law, an emf is induced when there is a relative motion of a conductor placed in magnetic field.
Thus, the two forces required for generators and electric motor to work is electricity and magnetism.
Electric motor is a type of dynamo which converts electrical energy to mechanical energy.
Thus, In an electric motor, the energy transformation begins as electrical and becomes mechanical.
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I lean against a wall, applying force. Which could be described as the “reaction force?”
A. My force against the wall
B. The walls force against me
C. The force of gravity
D. No reaction
E. Not enough information
The answer is B The Wall Force Against Me
Question 8 (3 points)
Bob throws a sticky piece of gum at a stationary cardboard box. The gum has a mass of 0.003 kg.
and the box has a mass of 0.05 kg. The gum hits the box with a speed of 9 m/s, and they stick
together and slide forward.
a. What is the total momentum of the system before the collision? (1 point)
b. What is the total momentum of the system after the collision? (1 point)
c. What is the velocity of the gum/box combination after the collision? (1 point)
p=mv
a).p=(0.003kg)(9m/s)+(0.05kg)(0m/s)=0.027kg*m/s
Answer:
a) 0.027 kgm/s
b) 0.027 kgm/s
c) 0.509 m/s
Explanation:
Mass of gum = m1 = 0.003 kg
Mass of box = m2 = 0.05 kg
Velocity of gum before collision = V1 = 9 m/s
Velocity of box before collision = V2 = 0 m/s
a) Momentum of system before collision = m1V1 – m2V2
= (0.003)(9) – (0.05)(0) = 0.027 kgm/s
b)According to law of conservation of momentum,
Momentum of system after collision = Momentum of system before collision
Momentum of system after collision = 0.027 kg/s
c) as the gum and box behaving as a single object so their velocity (V’) will be same.
Momentum of system after collision = (m1 + m2)V’ = 0.027 kg/s
V’ = 0.027/(m1 + m2)
V’ = 0.027/(0.003 + 0.05)
V’ = 0.509 m/s
Look at the figure above. Which position of the earth represents an equinox?
A. End of summer
B. Beginning of winter
C. Beginning of autumn
D. Middle of spring
'A' and 'C' are the same point in time. When Summer ends, Autumn begins. An equinox occurs at that time.
The position of the Earth represents an equinox are A and C.
What is an equinox?Equinox means both of the twice every year (as about March 21 and September 23) when the Sun crosses the equator and day in and day out are wherever on earth of around equivalent length.
The end of summer and the beginning of autumn occurs at the same point in time. When Summer ends, Autumn starts. An equinox occurs at this time.
Thus, the correct option are A and C.
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Suppose a rock is dropped off a cliff with an initial speed of 0m/s. What is the rocks speed after 5 secounds, in m/s, if it encounters no air resistance?
After 5 seconds, the rock would be traveling at 49 m/s provided there is no air resistance.
To determine the speed of the rock after 5 seconds of free fall without air resistance, we can use the equation of motion under constant acceleration due to gravity. The relevant formula, which is derived from the laws of motion, is:
v = u + at
Where:
v is the final velocity (what we want to find)
u is the initial velocity
a is the acceleration due to gravity (approximately 9.8 m/s² on Earth)
t is the time for which the object has been falling
Since the rock is dropped (meaning no initial velocity), u = 0 m/s. Thus, the equation simplifies to:
v = at
Substituting known values, we get:
v = 9.8 m/s²×5 s
v = 49 m/s
The speed of the rock after falling for 5 seconds from a cliff, in the absence of air resistance, can be calculated using the formula v = gt, where g is the acceleration due to gravity. After 5 seconds, the rock's speed will be 49 m/s.
The question asks for the speed of the rock after 5 seconds if it is dropped from a cliff with no air resistance. To solve this, we can utilize the formula for the velocity of a falling object due to gravity, which is v = gt, where 'v' is velocity, 'g' is the acceleration due to gravity (approximately 9.8 [tex]m/s^2[/tex] on Earth), and 't' is the time in seconds.
In this case, the initial speed is 0 m/s, so after 5 seconds the speed of the rock would be:
v = 9.8 [tex]m/s^2[/tex] × 5 s = 49 m/s
Therefore, the rock's speed after 5 seconds will be 49 m/s, assuming that there is no air resistance.
what is the deceleration of a bicycle that goes from 40m/s to 20m/s in 5 seconds
Answer:
[tex]-4 m/s^2[/tex]
Explanation:
The acceleration of the bycicle is given by:
[tex]a=\frac{v-u}{t}[/tex]
where
v = 20 m/s is the final velocity of the bike
u = 40 m/s is the initial velocity
t = 5 s is the time interval
Substituting numbers, we find
[tex]a=\frac{20 m/s-40 m/s}{5s}=-4 m/s^2[/tex]
and the acceleration is negative, which means that the bycicle is slowing down.
( Image is 6 C carbon with the numbers 12.011 under it ) According to the image, the atomic mass of carbon is 12.011. How is the atomic mass of carbon, or any other element, determined? A. By adding the number of protons and the number of electrons B. By adding the number of protons and the number of neutrons C. By adding the number of protons, the number of neutrons, and the number of electrons D. By identifying the number of protons
Answer:
B. By adding the number of protons and the number of neutrons
Explanation:
The atomic mass is determined by adding the number of protons and neutrons in an atom. An atom is made up of three fundamental particles: Electrons, Protons and Neutrons.
The protons and neutrons occupy a central region in an atom known as the nucleus. The nucleus is positively charged and mass concentrated.
If we compare the relative masses of the subatomic particles, the masses of protons and neutrons would be 1 and that of an electron would be 1/1840. This shows that the mass of electrons are negligible.
In order to ascertain atomic mass, we therefore add the number of protons and neutrons together. This is how we arrive at 12.011 as the value of the atomic mass of C and for other elements.
The atomic mass is also known as the mass number.
The atomic mass of an element including carbon is determined by adding the number of protons and neutrons in its most common atomic form. Electrons do not appreciably contribute to the atomic mass due to their extremely small mass.
Explanation:The atomic mass of carbon, as presented in the image, is 12.011. This is determined by the sum of the number of protons and neutrons in most common form of an atom of an element. For example the most common isotope of carbon, Carbon-12, has six protons and six neutrons for a total of 12 subatomic particles in its nucleus. This means the mass number of Carbon-12 is 12.
Note that electrons, while they are part of the atom, do not appreciably contribute to the mass of an atom because their mass is exceedingly small. Thus, in response to the question the atomic mass of an element is determined by B 'By adding the number of protons and the number of neutrons' .
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Oil ________.
A. Is a renewable resource
B. Releases more toxins than coal
C. Must mined from underground
D. Can be replenished
Oil must be mined from underground.
Ken’s community is completely dependent on agriculture for their income. They cultivate and breed domestic species for their food. Ken lives in which society?
A.
hunter-gatherer
B.
modern
C.
primitive
D.
agrarian
Answer:
D. agrarian
Explanation:
The agrarian society is a society that is strictly revolving around the agriculture and animal farming for its survival. In this type of society, the people are only engaged in producing food, be it by planting and raising certain crops or breeding domesticated animals. The main purpose of this type of society is to be able to produce enough food for the whole year, so it is a self maintaining society that consumes as much as it produces. The situation described about Ken is a reflection of this type of society.
Answer: = D. agrarion
which of the following best describes to use for non-renewable resource?
California has several power plants that use heat from the Earth to generate electricity
in the state of Texas you can find miles of windmills that are used to generate electricity
natural gas is a great alternative to electricity for cooking
the electronic signs along the highway are run by solar power
Answer:
the answer is the last one
The electronic signs along the highway are run by solar power - this statement best describes to use for non-renewable resource.
What is a non-renewable resource?A nonrenewable resource exists as a substance that is being utilized more quickly than it can substitute itself. Most fossil fuels, minerals, and metal ores exist as nonrenewable resources. Renewable resources such as solar and wind power and water exist unlimited in supply. Non-renewable energy creates up 95 percent of the world’s electricity needs. Most sources of non-renewable energy exist as fossil fuels such as petroleum, coal, gas, and oil. on-renewable energy exists energy sources that will ultimately run out when put to work.
The correct answer is option D.
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Please help!!
30 Points!!!
i only have 1 hour
Answer:
8) inertia
9) mass and velocity
10) electric
11) decreases because gravity decreases
Hello There
Newtons first law of motion is sometimes called the law of "INERTIA"
Momentum depends on "MASS AND VELOCITY"
What force is responsible for the repulsion between two positively charged particles? "ELECTRIC"
An astronaut travels far away from Earth, her weight "DECREASES BECAUSE GRAVITY DECREASES"
Why don’t you fall through the floor
Select all the correct answers.
According to Newton’s law of universal gravitation, which statements are true?
As we move to higher altitudes, the force of gravity on us decreases.
As we move to higher altitudes, the force of gravity on us increases.
As we gain mass, the force of gravity on us decreases.
As we gain mass, the force of gravity on us increases.
As we move faster, the force of gravity on us increases.
Reset Next
According to the law of gravitation given by Newton, higher the altitudes, less the force of gravity experienced.
Answer: Option A.
Explanation:
The law of gravitation given by Newton, said that the gravity force is experienced more when close to the Earth. Therefore, increase in altitude, means that the individual or the object has gone much above the sea floor, and as the distance increases the force decreases. The force of gravitation is “inversely proportional to distance”.
According to Newton’s law of universal gravitation, the statements which are true are "As we move to higher altitudes, the force of gravity on us decreases "and "As we gain mass, the force of gravity on us decreases".
Newton’s law of universal gravitation:
According to this law, every particle of matter is said to pull towards every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
It can be expressed as:
F = (G × m1 × m2) / r²
F: gravitational force between two objects,
G: gravitational constant
m1 and m2: masses of the two objects
r: distance between the centers of the two objects.
The force of gravity weakens with increasing distance from the center of the Earth. As we move to higher altitudes, the distance between us and the Earth's center increases, resulting in a decrease in the force of gravity.The force of gravity is directly proportional to the mass of the objects involved. Therefore, by gaining mass, the force of gravity between us and other massive objects increases.Therefore, the correct statements are: As we move to higher altitudes, the force of gravity on us decreases "and "As we gain mass, the force of gravity on us decreases".
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1. How does potential energy differ from kinetic energy?
Answer:
Read Below for answer
Explanation:
Kinetic energy is the kind of energy present in a body due to the property of its motion
Potential Energy is the type of energy present in a body due to the property of its state
Final answer:
Potential energy is stored energy due to position or state, able to have both positive and negative values, while kinetic energy, always positive, refers to the energy of motion. Energy can transition between these two states, and kinetic energy correlates directly with the speed of an object.
Explanation:
Potential energy differs from kinetic energy in that it represents the energy stored within an object due to its position or state, whereas kinetic energy is the energy of motion. An essential distinction between potential energy and kinetic energy is that potential energy can have a negative value when it implies a release of stored energy, leading to it being lower than the initial state.
Conversely, kinetic energy is always a positive value because it is directly correlated with motion—it increases as the speed of the object increases.
An example of potential energy is a stretched bow, whereas a revolving wheel illustrates kinetic energy. Energy can transition between potential and kinetic; for instance, when a ball reaches the peak of its bounce and begins to fall, its potential energy converts to kinetic energy.
The different types of potential energy, such as elastic, gravitational, and chemical, have unique sources and characteristics but share the common feature of being stored energy that can be converted to kinetic energy under the right circumstances.
Work is a transfer of
Answer:
Energy
Explanation:
Work is the transfer of energy
The total power input to the solar cell is 2.4W when the efficiency is 0.20.
Calculate the useful power output of the solar cell using the following equation:
The useful power output of the solar cell using the following equation will be 0.48 W. Power rating is an efficiency perameter.
What is the power rating?The maximum power input allowed to pass through a piece of equipment is known as the equipment's power rating.
The power rating or the efficiency is found as;
[tex]\rm \eta = \frac{P_{OUT}}{P_{IN}} \\\\ P_{OUT}}= \eta \times {P_{IN} \\\\[/tex]
[tex]\rm P_{OUT}= 0.20 \times 2.4 \\\\ P_{OUT}= 0.48 \ W[/tex]
Hence, the useful power output of the solar cell will be 0.48 W
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Which of the following statements about the nuclear strong force is true?
the strength of the nuclear strong force depends on the charge of the atom
the nuclear strong force drops to practically nothing at large distances
the nuclear strong force is responsible for one flavor (type) of quark turning into another flavor (type)
the nuclear strong force is responsible for the sun's nuclear fission process
Answer: 2, the nuclear strong force drops to practically nothing at large distances.
Explanation: The protons and neutrons in the nucleus share subatomic particles called pions. This exchange is what keeps the protons and neutrons stuck together in the nucleus. Despite the strong force being the strongest force, it has a very small range. This is because pions have very short lifespans. So, the strong force would have literally no effect at large distances.
Hope that helped! :)
The true statement is; "the nuclear strong force drops to practically nothing at large distances"
What is nuclear force?
The nuclear force refers to that attractive force that holds the nucleons together in the nucleus of an atom. These are short range forces and seek to minimize the degree of repulsion in the nucleus.
One statement that is true about the nuclear strong force is; "the nuclear strong force drops to practically nothing at large distances".
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A rock is projected upward from the surface of the moon, at time t = 0.0 s, w a velocity of 30 m/s. The acceleration due to gravity at the surface of the moon in 1.62 m/s2. What is the maximum height of the rock above the surface?
Explanation:
The situation described here is parabolic movement. However, as we are told that the rock was projected upward from the surface, we will only use the equations related to the Y axis.
In this sense, the movement equations in the Y axis are:
[tex]y-y_{o}=V_{o}.t+\frac{1}{2}g.t^{2}[/tex] (1)
[tex]V=V_{o}-g.t[/tex] (2)
Where:
[tex]y[/tex] is the rock's final position
[tex]y_{o}=0[/tex] is the rock's initial position
[tex]V_{o}=30\frac{m}{s}[/tex] is the rock's initial velocity
[tex]V[/tex] is the final velocity
[tex]t[/tex] is the time the parabolic movement lasts
[tex]g=1.62\frac{m}{s^{2}}[/tex] is the acceleration due to gravity at the surface of the moon
As we know [tex]y_{o}=0[/tex] , equation (2) is rewritten as:
[tex]y=V_{o}.t+\frac{1}{2}g.t^{2}[/tex] (3)
On the other hand, the maximum height is accomplished when [tex]V=0[/tex]:
[tex]V=V_{o}-g.t=0[/tex] (4)
[tex]V_{o}-g.t=0[/tex]
[tex]V_{o}=g.t[/tex] (5)
Finding [tex]t[/tex]:
[tex]t=\frac{V_{o}}{g}[/tex] (6)
Substituting (6) in (3):
[tex]y=V_{o}(\frac{V_{o}}{g})+\frac{1}{2}g(\frac{V_{o}}{g})^{2}[/tex] (7)
[tex]y_{max}=\frac{{V_{o}}^{2}}{2g}[/tex] (8) Now we can calculate the maximum height of the rock
[tex]y_{max}=\frac{{(30m/s)}^{2}}{(2)(1.62m/s^{2})}[/tex] (9)
Finally:
[tex]y_{max}=277.777m[/tex]
what are some signs of physical change
Answer:
Common Physical Changes. Texture. Color. Temperature. Shape. Change of State.
Physical Properties. Luster. Malleability. Ability to be drawn into a thin wire. Density. Viscosity.
Common Chemical Changes. Change in Temperature. Change in Color. Noticeable Odor. Formation of a Precipitate.
Explanation:
Physical changes can be reversed usually by heating or cooling a substance, without any chemical bonds being broken.
Chemical changes CANNOT be reversed due too the chemicals being broken and forming something new.
Btw, I know you didn't need chemical change, but I put it in there anyway. Hope it helps.
Answer: if you are talking about the body then increased hormones as physical changes with growing in sexual parts and for guys increase in with muscles and growing in breast.
If it was of a change in physical properties. as of natural in universe then it would be melting, transition to different states of matter.
Explanation:
When everyone gets of age they grow and mature and these kind of changes happen
The reason for that would be of the change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density, These are some examples of physicals changes
what is waters characteristics shape due to?
single covalent bonding
polar covalent bonding
ionic bonding
nonpolar covalent bonding
Answer:
In a polar covalent bond, the electrons are unequally shared by the atoms and spend more time close to one atom than the other.
Explanation:
Answer: polar covalent bonding
Explanation:
A polar covalent bond is defined as the bond which is formed when there is a difference of electronegativities between the atoms.
Ionic bond is formed when there is complete transfer of electron from one atom to another atom.
Non-polar covalent bond is defined as the bond which is formed when there is no difference of electronegativities between the atoms.
Water molecules are bonded by strong hydrogen bonding between the hydrogen atom and the electronegative oxygen atom by sharing of electrons and thus form polar covalent bonds.
Around how many miles is a light year
Answer:
5,878,625,373,183.6 miles
What is the effective resistance between the points A and D? A) 1.3 Ω B) 2.2 Ω C) 10 Ω D) 12 Ω
Answer:
D
Explanation:
The resistors are in series (lined up in a row). So the overall resistance is the sum:
R = 3.0 Ω + 4.0 Ω + 5.0 Ω
R = 12 Ω
Answer is D.
Describe the benefits and risks associated with nuclear energy.
Producing nuclear energy is far more environmentally friendly than burning fossil fuels. That is the main benefit.
The main risk is radiation. If the nuclear waste is not properly disposed of, it can leak radiation into the environment. Fortunately, this is not an issue since there are ways to deal with it. There is also the risk of a disaster like the Chernobyl incident, however that was mostly due to faulty reactor construction. However, reactors today are built to avoid such issues.
Nuclear energy is the energy released during nuclear fission or fusion, especially when used to generate electricity.
What are the benefits and risks associated with nuclear energy?Advantages
Nuclear is the largest source of clean power in the United States. It generates nearly 800 billion kilowatt-hours of electricity each year and produces more than half of the nation’s emissions-free electricity. The nuclear industry supports nearly half a million jobs in the United States and contributes an estimated $60 billion to the U.S. gross domestic product each year. They also contribute billions of dollars annually to local economies through federal and state tax revenues.A strong civilian nuclear sector is essential to U.S. national security and energy diplomacy. The United States must maintain its global leadership in this arena to influence the peaceful use of nuclear technologies.Disadvantages
Commercial nuclear power is sometimes viewed by the general public as a dangerous or unstable process. This perception is often based on three global nuclear accidents, its false association with nuclear weapons, and how it is portrayed on popular television shows and films.Many people view used fuel as a growing problem and are apprehensive about its transportation, storage, and disposal. Building a nuclear power plant can be discouraging for stakeholders. Conventional reactor designs are considered multi-billion dollar infrastructure projects. High capital costs, licensing and regulatory approvals, coupled with long lead times and construction delays, have also deterred public interest.High operating costs.To learn more about nuclear energy, refer to: https://brainly.com/question/1013815
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Can I get help and an explanation on C?
Answer:
1.67 m/s
Explanation:
Momentum is conserved.
Initial momentum = final momentum
(30 kg) (10 m/s) + (35 kg) (-10 m/s) = (30 kg) v + (35 kg) (0 m/s)
300 - 350 = 30v
v = -5/3 m/s
Linus will move at 1.67 m/s in the direction opposite that he started.
A radio wave might have a wavelength as long as a _____
A.) cup
B.) house
C.) puppy
D.) molecule
Answer:
molecule
Explanation:
HELP ASAP! GIVING BRAINLIEST!!
How could you give a pendulum more energy?
Answer:
swinging it with more force
Explanation:
swinging it hardly with more energy
Answer: You have to push it.
Explanation: Since you are pushing the pendulum, the energy from your hand transfers to the pendulum and the pendulum gains more kinetic energy. If you are writing an essay, change this a bit so you won't be caught plagiarizing. Please give a brainliest so I can continue giving answers like this.
What describes how the spring constant affects the potential energy of an object for a given displacement from an equilibrium position?
Answer:
The higher the spring constant, the greater the elastic potential energy.
Answer:
ITS C JUST FINISHED
Explanation:
Which statement describes Rutherford model of an atom
Can you give us the statements?