Answer:- Potential energy is the amount of energy a object has while it's at rest (or not moving) Kinetic energy is how much energy a object is while it's moving
Explanation:
I don't understand what you mean by "the following" or "which of", and there are no suggestions listed to pick from.
If any of the THESE things is on this list in the place where you copied the question from, then it's the answer. If none of these is on the list, then you're on your own.
-- A bowling ball on the floor in the upstairs closet.
-- A car up on the rack having an oil-change.
-- A helicopter hovering 10-ft off the ground.
-- A mosquito hovering 10-ft off the ground.
-- A helium party balloon hovering 10-ft off the ground, with its string tied to a chair.
-- A regular party balloon full of regular air, with its string tied to a chair, and dangling down the back of the chair.
-- A regular party balloon full of regular air, tied to a hook in the ceiling, dangling down but not reaching the floor.
-- A gallon of gasoline, in the tank of your car, that has not burned yet.
-- A kitchen match, in the box, that has not burned yet.
-- A birthday candle, standing up in the middle of a rose on the cake, that has not been lit yet.
-- A stick of dynamite that has not been lit yet, lying on the ground.
-- A firecracker that has not been lit yet, lying on the ground.
-- A squirrel sitting up in the tree watching me walk by on the ground.
-- A bird sitting up in the top of the tree watching the squirrel.
-- A chewed up piece of roast beef that has not been digested yet, lying in your stomach.
-- A chewed up piece of roast beef that has not been digested yet, lying in MY stomach. (A more satisfying example)
-- A tree branch that broke off in the wind yesterday and is lying on the roof of your house.
-- The air that is right under the ceiling in your bedroom.
-- YOU, when you are fast asleep in the top bunk in your bedroom.
-- A rifle bullet that was fired straight up, reached the peak of its trajectory, and is just about to start falling downward in 0.001 second from now.
-- The rocket that was launched, went straight up for a while, ran out of fuel, continued to coast straight up for a while, reached the peak of its trajectory, and is just about to start falling downward in 0.001 second from now.
Please Help!!!
Shondra takes notes in class.
I. Electromagnetic Waves
II. The ability to work
- Has many forms
- Mechanical
III. Potential energy
- Chemical
- Elastic
- Gravitational
Kinetic energy
- Energy of movement
- Electrical
IV. Nuclear
- Radiant
- Thermal
One line of Shondra’s notes is irrelevant to the rest of her notes. Which line is about a different topic than the rest of Shondra’s notes?
A - I
B - II
C - III
D - IV
Answer:
I. Electromagnetic waves
Explanation:
Answer:
I. Electromagnetic waves
Explanation:
at what point the certain object feels zero garvitational force between earth and the moon. take the required information from the book.
Required: distance away from earth or moon
Answer:
Newton gives us force
F=-G*M*m/R^2
Divide by the mass of the object to get acceleration
a=F/m = GM/R^2
You are solving the distance where the force from the moon equals the force from the Earth -
a= G*(mass of earth)/R^2 - G*(mass of moon)/(384400000-R)^2=0
Or in other words
G*(mass of earth)/R^2=G*(mass of moon)/(384400000-R)^2
Divide by G*(mass of the moon) and multiply by R^2 to get terms on both sides
G*(mass of earth)/(G*(mass of moon))=R^2/(384400000-R)^2
Since the mass of the moon and earth are fixed, the left side is a number
81.3 = R^2/(384400000-R)^2 → R^2/(384400000-R)^2–81.3 = 0
simplify
R/(384400000-R) = 9.01665
R=346024000 = 346,024 km.
Explanation:
If you imagine how to walk from your house to the bus stop, you are using a:
Answer:
Mental map
Explanation:
A mental map is a person's point-of-view perception of their area of interaction.
This is a short answer, but I Hope this helps!
- Kylie
Answer:
Mental map is the correct answer.
Explanation:
If you imagine how to walk from your house to the bus stop, you are using a: Mental map.
Critical mass is the ___ of material required to produce a chain reaction.
A.) minimum amount
B.) atomic mass
C.) precise amount
D.) maximum amount
Answer:A
Explanation:
Answer:
Minimum amount
Explanation:
There's no way for me to really explain it well but its the correct a p e .x answer
Which image illustrates refraction
Answer:
B
Explanation:
The image that illustrates refraction in the question above is : ( B ) Image B
Definition of RefractionRefraction is the change in direction of wave passing through a medium due to change in speed of the traveling wave. The first image represents a reflection as the wave does not pass through the medium but bounces off the medium.
The second image shows that the wave passes through the medium but changes its direction, therefore it represents refraction.
Hence, we conclude that the image that illustrates refraction in the question above is : ( B ) Image B
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Which of the following are found in plant cells buh not animal cells?
Asher cycles 12 miles in 16 hours. What is his speed?
Answer:
Asher cycles 12 miles in 16 hours. What is his speed?
Speed is a rate of distance to time.
Asher’s speed is 12 miles per 16 hours.
As a unit rate, his speed is 0.75.
Explanation:
just took quiz
If a substance absorbs energy but its temperature does not change, then the internal energy is changing.
If a substance absorbs energy but its temperature does not change, then the internal potential energy is changing.
Answer:
If a substance absorbs energy but its temperature does not change, then the internal potential energy is changing.
Explanation:
I just did this question on the same lesson.
A current of 1.8 A delivers 2.5 C of charge.
COM
How much time was required?
A.O 0.70 s.
B.O 0.72 s
C.0 1.45
D.0 4.5 5
" 1.8 Ampere " means "1.8 Coulomb/sec".
(2.5 C)/(1.8 C/sec) = (2.5/1.8) (s) = 1.39 sec
I honestly don't see where any of the choices comes from, but the closest one is (C) 1.45 sec.
Answer:
1.4 seconds, which is the third option
Explanation:
Current is defined as the flow of charge per time
Therefore, the equation that relates current, charge and time can be expressed as follows:
I = ΔQ / ΔT
where:
I is the current given = 1.8 ampere
ΔQ is the charge given = 2.5 coulomb
Δt is the time required for the flow of the given charges to give the 1.8 ampere.
Substitute with the givens in the above equation to get the time as follows:
1.8 = 2.5 / ΔT
ΔT = 2.5 / 1.8 = 1.38888 which is approximately 1.4 seconds
1. Using the data from M7:
Which four countries are the worst in releasing CO2?
Answer:
China, US, India, and Russia
How does nuclear energy work? Explain
Nuclear energy is produced through controlled nuclear fission in reactors, where large uranium nuclei are split by neutrons, releasing energy to convert water to steam that turns turbines and generates electricity. Fission and fusion are two different processes that release energy from the nucleus of an atom. The entire process is meticulously controlled to provide a sustainable and powerful source of energy.
Nuclear energy is produced through the processes of nuclear fission or fusion. In a nuclear power plant, uranium is used in fuel rods, where its atoms are split apart by neutrons. When uranium nuclei split, they release energy, radiation, and more neutrons. This results in a controlled chain reaction. The energy released during this process is used to heat water, which then turns into steam. The steam drives a turbine connected to a generator, thus producing electricity.
There is a crucial difference in the types of nuclear reactions used for energy. In fission, large uranium nuclei absorb neutrons and break down into smaller nuclei, releasing a significant amount of energy. In fusion, which is not yet commercially viable, smaller nuclei are forced together to form larger nuclei, which also releases energy.
It's important to control the speed of the fission reaction to sustain the chain reaction for energy production and to prevent uncontrolled energy releases like those in atomic bombs. Natural uranium must first be enriched with uranium-235 to be effective in reactors. On the other hand, scientists continue to research how to achieve controlled fusion, which also has the potential to provide significant amounts of energy.
If the mass of a ball B is 1 kilogram and it’s speed is 1 m/sec. the mass and the speed of ball A is three times the mass and speed of ball B. What is the ratio of kinetic energy of ball A to ball B? Hint: dividethe kinetic energy equation for ball A by the kinetic energy equation of ball B.
A.3
B.6
C.9
D.27
your answer would be 27.
The ratio of kinetic energy of ball A to ball B is 27
Answer: Option D
Explanation:
The kinetic energy of any object is the energy exhibited by the object when it is in motion. The kinetic energy of any object is directly proportional to the mass of the object and square of the speed at which the object is moving. So the kinetic energy of any object can be represented as
[tex]E_{k}=\frac{1}{2} \times m \times(\text { speed })^{2}[/tex]
In this case, for ball B the mass is 1 kg and speed is 1 m/s. So the kinetic energy of ball B is
[tex]\text { Kinetic energy for ball } B=\frac{1}{2} \times 1 \times 1^{2}=0.5 J[/tex]
As it is said that the mass (M) and speed of ball A is three times the mass and speed of ball B. So ,
[tex]\text { M of ball } A=3 \times M \text { of ball } B=3 \times 1=3 \mathrm{kg}[/tex]
And,
[tex]\text { Speed of ball } A=3 \times \text { Speed of ball } B=3 \times 1=3 \mathrm{m} / \mathrm{s}[/tex]
Thus, the kinetic energy of ball A will be
[tex]\text {Kinetic energy for ball } A=\frac{1}{2} \times 3 \times 9=13.5 \mathrm{J}[/tex]
Now, to determine the ratio of kinetic energy of ball A to ball B,
[tex]\text { Ratio of kinetic energy }=\frac{\text {Kinetic energy of Ball } A}{\text {Kinetic energy of Ball } B}=\frac{13.5}{0.5} = 27[/tex]
Two identical point charges are 3.00 cm apart. find the charge on each of them if the force or repulsion is 4.00 x 10^-7. (Use Coulomb's constant)
Answer:
Charge on each is 2 x 10⁻¹⁰.
Explanation:
We know that Force between two point charges is given b the Coulomb's law as:
F = kq₁q₂/r^2
k = 9 x 10^9
r = 3.00 cm
= 0.03 m
q₁ = q₂
F = 4.00 x 10^-7
Rearranging the formula, we get:
F = k q²/r²
q² = Fr²/k
q² = 4 x 10⁻⁷ x 0.03²/(9x10⁹)
q² = 4 x 10⁻²⁰
q = 2 x 10⁻¹⁰
As there is force of repulsion between the charges, the charges must be both positive or both negative.
What is the efficacy of a 60.0 W incandescent lightbulb that produces 830 lumens?
η = 13.8 lm/W. The luminous efficacy of a incandescent lightbulb that produces 830 lumens and consumed a power of 60 W is 13.8 lm/W.
The luminous efficacy of a light source is the relationship between the luminous flux (in lumens) emitted by a light source and the power (in watts). The luminous efficacy of a light source or luminous efficiency measures the part of electrical energy that is used to illuminate and is obtained by dividing the luminous flux emitted by the electrical power consumed. Luminous efficiency is expressed in lumens per watt (lm / W). It is given by the relation:
η = F / P. Where F is the luminous flux, and P is the power consumed by the light source.
The efficacy of a 60.0 W incandescent lightbulb that produces 830 lm is:
η = 830 lm / 60 W
η = 13.8 lm/W
What is tan(61)?
А. 1.80
B. 0.49
C. 0.61
D. 0.87
Answer:
The answer of tan(61) is:
A= 1.80
A wheel has a radius of 9 centimeters and an axle radius of 3 centimeters. The IMA of the system is ___?
9
0.33
3
27
Answer:
Answer is C.
Explanation:
To calculate the IMA for a wheel and axle, find the ratio of the larger radius to the smaller radius:
IMA = R/r
IMA = 9/3
IMA = 3
15. One purpose of the tread pattern on a tire is to
a reduce tire wear.
b. reduce traction
C. allow water to flow away from the tire.
d. look impressive.
Answer:
The answer would be C.
The correct answer is C. Allow water to flow away from the tire. Tread patterns improve handling, traction, and performance. Wet conditions are drained by the tread design. To prevent hydroplaning, this channels water.
Let water drain from the tyre. On wet roads, a tire's tread pattern improves traction and safety. Water is dispersed away from the tire's contact patch by tread grooves and channels. Hydroplaning prevention is this. Water can prevent traction and cause sliding on wet roads. Water is evacuated through the tread pattern's channels, retaining road contact and grip. For road safety and performance in all weather situations, the tread pattern delivers traction on dry roads and superior handling.
The tread pattern on a tire serves several purposes, including providing traction on different road surfaces, improving handling, and enhancing the tire's performance in various weather conditions. One essential function of the tread pattern is to allow water to flow away from the tire's contact patch during wet conditions. This helps prevent hydroplaning by channeling water away and maintaining proper contact between the tire and the road, ensuring better grip and safety.
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Why does sound travel faster in solids than in liquids, and faster in liquids than in gases?
Answer:
Liquids are more dense than gases, but less dense than solids, so sound travels 2nd fast in liquids. Gases are the slowest because they are the least dense.
Explanation: The more dense something is, the faster sound will travel through the matter. I hope this was the answer you was looking for.
Final answer:
Sound travels faster in mediums that are denser and more rigid, with solids being faster than liquids, which in turn are faster than gases. The closer particle arrangement in solids and liquids allows more efficient energy transfer. Temperature and air pressure also influence sound speed, with higher values generally leading to faster sound travel.
Explanation:
The speed of sound is influenced by the medium it travels through due to differences in density and rigidity. In solids, particles are packed together more closely compared to liquids, and in liquids, they are closer than in gases. This proximity allows for quicker transfer of sound energy from particle to particle. Sound waves travel faster in solids than in liquids because solids are more rigid and less compressible, and faster in liquids than in gases for similar reasons. In addition to rigidity and density, temperature also affects the speed of sound. Higher temperatures increase particle movement, thus enhancing sound transmission. The speed of sound is greater at sea level due to higher air pressure, which decreases the compressibility of air and allows sound to travel through it more quickly.
What is the volume of 2400kg of gasoline (petrol) if the density of petrol is 0.7g/km3
To find the volume of 2400kg of gasoline with a density of 0.7g/cm³, convert the mass to grams and then divide by the density, yielding a volume of 3,428,571.43 cm³ or 3428.571 L.
Explanation:The question asks for the volume of 2400kg of gasoline, given the density of petrol is 0.7g/cm³ (not g/km³ as mentioned in the question, which seems to be a typo). To calculate the volume, use the formula Volume = Mass / Density. First, convert the mass of gasoline from kilograms to grams (since the density is given in grams per cubic centimeter), which is 2400kg * 1000g/kg = 2,400,000g. Then, divide this by the density of petrol to find the volume. Hence, Volume = 2,400,000g / 0.7g/cm³ = 3,428,571.43 cm³ or 3428.571 L (since 1,000 cm³ is equivalent to 1 L).
An idea, event, or object can be represented by a ____ to help people better understand it.
Answer:
An idea, event, or object can be represented by a 'model' to help people better understand it.
Explanation:
If an idea, event or object is to be represented or introduced to an individual or a group of people, a good idea is to represent it with a model.
The reason behind it being that a model will help the people understand it better as they will be able to see something in front of it and know what is being discussed.
A symbol is used to represent an idea, event, or object, to convey complex ideas and emotions with cultural significance. Symbolism allows for effective communication by providing a shorthand that encapsulates a variety of meanings within recognizable forms.
Explanation:An idea, event, or object can be represented by a symbol to help people better understand it. Symbolism is the practice of using symbols such as gestures, signs, objects, signals, and words to convey complex ideas and emotions that are recognized shared meanings within a society. For example, the United States' flag might be just a piece of colored cloth, but it can represent a multitude of ideas from freedom and sacrifice to oppression, depending on one's perspective and cultural context.
Creating symbols can be a form of shorthand communication, offering a powerful way to express complex ideas without lengthy explanations. When writing, one might use imagery to evoke a sensory experience of an event or moment, thereby enriching the storytelling with deeper meaning. Symbols thus serve as cultural aggregates which crystallize a variety of emotions and concepts in a universally understandable way.
In some cases, models can serve as symbolic representations, such as equations, physical representations, or computer simulations which abstractly represent aspects of reality to convey understanding to others. Similarly, an analogy can be employed to make complex subjects more relatable by comparing them to familiar experiences or objects, ensuring effective communication with the audience.
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Which data set has the largest range?
A. 1,5,2,4,3,5
B. 5,6,4,5,6,4
C. 8,9,1,2,3,4
D. 3,9,5,7,3,6
Answer:
Option C
Explanation:
We have to check range of all options first
For A:
Largest Value: 5
Smallest Value: 1
So range = Largest value - smallest value
5-1 = 4
For B:
Largest Value: 6
Smallest Value: 4
Range = 6-4 = 2
For C:
Largest Value: 9
Smallest Value: 1
Range = 9-1 = 8
For D:
Largest Value = 9
Smallest Value = 3
Range = 9-3=6
So, the data set in option C has the largest range
A bowling ball rolls 32 meters in 0.8 seconds what is the average speed in m/s of the bowling ball in m/s
Average speed = (distance rolled) / (time to roll the distance)
Average speed = (32 meters) / (0.8 sec)
Average speed = (32/0.8) (meters/sec)
Average speed = 40 m/s .
I don't know. That's just a hair under 90 miles per hour. Is this reasonable for a bowling ball ? Does anybody roll a bowling ball as fast as a major league pitcher pitches a hardball ? ?
10. A person with a mass of 15 kg is walking uphill at a velocity of 2 m/s. What is the walker's momentum?
A. 15 kg-m/s
B. 30 kg-m/s
C. 10 kg-m/s
D. 13 kg-m/s
16. Two bouncy balls colliding with each other is an example of what type of collision?
A. Inelastic collision
B. Elastic collision
C. Parallel collision
D. Mass collision
20
Which of the following is considered to be a vector?
A. Temperature
B. Mass
C. Velocity
D. Time
Answer:
10. B. 30 kg.m/s
16. B. Elastic collision
20. Velocity
Explanation:
10. Momentum is simply the product of mass and velocity of an object. So it can be soved with the equation:
p = mv
Where:
p = momentum (kg.m/s)
m = mass (kg)
v = velocity (m/s)
Your problem gives you the following:
m = 15 kg
v = 2 m/s
p =?
So just fill in what you know:
p = mv
p = (15kg)(2m/s) = 30 kg.m/s
16. Elastic collision occurs when two objects collide and no loss in energy occurs after collision. Supposing that the balls are very bouncy, let's say they bumped into each other and they bounce-off of each other. If there is no loss in speed on both ends, that means that this is an elastic collision.
20. To differentiate vector and scalar quantity, just remember that vectors have direction. Both quanitites show magnitude, but vector quantities indicate the direction the magnitude is going. Among all the choices, it is only velocity that is considered as a VECTOR quantity.
Please help me calculate the frequency of a photon 434E-9 and the speed of light 3E8m/s
Answer:
f = 6.912 E14 Hz
Explanation:
The speed of the wave is defined as
speed = wavelength*frequency
the frequency of the photon is defined as
f = speed / wavelength
f = 3 E8 m/s / 434 E-9 m
f = 6.912 E14 Hz
what’s the mass of an object that weighs 32 newton’s
Answer:
m
≈
3.878
Kg
Explanation:
By Newton's second law,
F = m a
So, W = m g
m = W /g
m=32/ 8.25 Kg or 3.878 Kg (approx)
What do elements in a family tend to share.
A.) similar periods
B.) similar groups
C.) similar atomic symbols
D.) similar chemical properties and characteristics
Answer:
its D
Explanation:
because they share similar amounts of electrons in their outer shell. and characteristics is a learned trait which makes sense if we live with our family we would most likely act like them.
Answer: D
Explanation:
Just got it right on the quiz
A series circuit contains a 30 e resistor, a 20 resistor, and
a 10 resistor. The power supply provides 100 V to the
circuit
The current in the 10
resistor, to two significant figures, is ______ A.
Answer:
=1.667 A
Explanation:
For resistors connected in series, the same current flows trough all the resistors.
Therefore, V= IR (total)
V is the voltage of the supply, I the current through the circuit and R(total) the total resistance calculated calculated by adding the resistance of all the appliances in the circuit.
R (total) = 30+20+10= 60Ω as the value E can be replaced with Ω
V=IR
I=V/R
=100 V/ 60Ω
=1.667 A
Answer:
1.7A is the answer
Explanation:
Which of the following is not a double-replacement?
A.) HNO3 (aq) + KHO (aq) -> H2O (l) + KNO3 (aq)
B.) Ba(OH)2 (aq) + 2HClO4 (aq) -> Ba(ClO4)2 (aq) + 2H2O (l)
C.) NaOH (aq) + HCl (aq) -> H2O (aq) + NaCl (s)
D.) Zn (s) + 2HCl (aq) -> H2 (g) + ZnCl2 (s)
Answer:
The correct answer is option D.
Explanation:
From the given options the reaction which is not a double replacement reaction is:
[tex]Zn (s) + 2HCl (aq)\rightarrow H_2 (g) + ZnCl_2 (s)[/tex]
This because the above reaction is an example of single replacement reaction.
[tex]AB+C\rightarrow AC+B[/tex]
Whereas;
Double replacement reaction is a type of chemical reaction in which exchange of ions among the reactants take place.
[tex]AB+CD\rightarrow AD+CB[/tex]
Answer:
A and B
Explanation:
state amperes law of induction
Ampere's Law states that for any closed loop path, the sum of the length elements times the magnetic field in the direction of the length element is equal to the permeability times the electric current enclosed in the loop.
Ampere's Law states that the line integral of the magnetic field around an electric current is proportional to the current, helping in calculating the magnetic field generated by current-carrying wires.
Ampere's Law is a fundamental physical law in electromagnetism, stating that the line integral of the magnetic field (B) around an electric current is proportional to the current (I). This means that for any closed loop, the sum of the magnetic field dot products along the loop is equal to the permeability constant (µ₀) times the current passing through the loop. Mathematically, Ampere's Law is expressed as ∫ B ⋅ dl = μ₀I, where B is the magnetic field, dl is a differential element of the loop C, and μ₀ is the magnetic constant.
Ampere's law helps in determining the magnetic field generated by complex configurations of electric current by breaking it down into segments, each producing a magnetic field as if it was from a long straight wire. The resultant magnetic field is the vector sum of the fields due to each of these segments.
What does the negative sign in F = –kx mean?
It says that the force of a spring is always opposite to the direction in which you stretch it or compress it. (the direction of 'x')
In other words, a spring that's disturbed always tries to put itself back to it's normal length, where x would be zero.