1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lubov Fominskaja [6]
3 years ago
10

If a 2 kg ball has 120 J of PE, then how high off the ground is it?

Physics
1 answer:
Yakvenalex [24]3 years ago
7 0
I think 6.1m i’m not sure sorry if i’m wrong
You might be interested in
Which of the following is not an application of Doppler technology?
allsm [11]
The correct answer to the question above is The third Option: C; ultrasound imaging of the liver. The ultrasound imaging of the liver is definitely not an application of Doppler technology.

Hope this helps! :)
8 0
3 years ago
Read 2 more answers
Suppose you throw a baseball downward from a roof so that it initially has 120 J of gravitational potential energy, and 10 J of
Volgvan

Answer:

B.

It will be greater than 10 J.

Explanation:

The total mechanical energy of an object is the sum of its potential energy (PE) and its kinetic energy (KE):

E = PE + KE

According to the law of conservation of energy, when there are no frictional forces on an object, its mechanical energy is conserved.

The potential energy PE is the energy due to the position of the object: the highest the object above the ground, the highest its PE.

The kinetic energy KE is the energy due to the motion of the object: the highest its speed, the largest its KE.

Here at the beginning, when it is at the top of the roof, the baseball has:

PE = 120 J

KE = 10 J

So the total energy is

E = 120 + 10 = 130 J

As the ball falls down, its potential energy decreases, since its height decreases; as a result, since the total energy must remain constant, its kinetic energy increases (as its speed increases).

Therefore, when the ball reaches the ground, its kinetic energy must be greater than 10 J.

7 0
3 years ago
Read 2 more answers
How does nuclear energy work? Explain
fgiga [73]
There are many processes to get nuclear energy. Nuclear energy is basically energy from an atom. For example fission is where the nucleus of an atom ( typically radioactive atoms ) gets split then energy is released ( typically heat). And in radioactive decay radiation is released from an radioactive atom. Hope this helps
6 0
3 years ago
WORTH 47 POINTS!!! It's EASY too!
Vikentia [17]
The Factors are Temperature and kinetic energy, the temperature is because the particles are going to move fast which means the particles in a solid container or in solid pattern they will actually vibrate and they will expand , when temperature increase, more kinetic energy between the particles .
examples is that in the steel when you heat a steel the particles inside it will vibrate then the particles speed up because the vibration increases, therefore the temperature increases so a a thermal expansion occurs that the vibration of the particles will take up more space so the steel bar expands slightly in all Direction if the temperature Falls the reverse happens and the material or steel contracts which means get smaller .
another example is the thermometer, the thermometer has a liquid inside it which is Mercury or alcohol this liquid expands when the temperature rises, the tube is made narrow so that a small increase in volume of the liquid produces a large movement along the tube.

5 0
3 years ago
Wood is an example of a translucent material.<br> True<br> False
Svetradugi [14.3K]
False, wood is a solid structure that is not see through
3 0
3 years ago
Other questions:
  • Amit has found a rock in his backyard and would like to measure its mass, volume, and density. What tools can he use to perform
    15·1 answer
  • What is the name of the theory that led to the development of the theory of plate tectonics
    6·2 answers
  • Can someone help with these/
    8·1 answer
  • PLEASE HELP. THIS IS DUE TODAY AT 11:59PM ​
    9·1 answer
  • What do these compounds have in common H2O cl2 NH3
    7·1 answer
  • If you had a rock with a volume of 237 ml and a density of 4.52 g/ml how much mass would it have?
    10·2 answers
  • It takes 20 Joules of Work to push 4 coulombs of charges Across the filament of a bulb.'find the potential difference Across the
    11·1 answer
  • What happens to the force of gravity between two masses if the mass of one of the objects decreases?
    6·2 answers
  • A man is 40 kg . calculate his weight.(g=10m/s^2)
    7·1 answer
  • Which of the following is an example of improving communication skills?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!