# physical science

posted by .

what form of energy do people use?
&
also doesnt E=mc squared mean energy=mass times ? squared....
&
how does increasing height affect gravitational potential energy?

~i have a HUGE semester final~ 100+ questions...~

• physical science -

Most folks use thermal energy a lot, and electrical energy second.

In the conversion of mass to energy, energy= mass*speedofLight^2

GPE= mass*g*height so increased height means more GPE

## Similar Questions

1. ### PHYSICS helppppp

A 0.2 kilogram baseball is thrown vertically downwards towards to the same horizontal floor. The baseball possesses an initial velocity of 30 meters per second. The height is 10.00m. (A) Calculate the POTENTIAL GRAVITATIONAL ENERGY …
2. ### Earth Science

1. Is it true that since energy cannot be created nor destroyed, the total energy of the river system remains constant?
3. ### physics

Explain each of the following questions. ( a) Can an objectâ€“ Earth system have kinetic energy and not gravitational potential energy?
4. ### college physics

Explain each of the following questions. ( a) Can an objectâ€“ Earth system have kinetic energy and not gravitational potential energy?
5. ### Preap Physics!!

Is gravitational potential energy different from potential energy?
6. ### physics

You reach out a second-story window that is 17 m above the sidewalk and throw a 2-kg ball straing upward with 17 J of kinetic energy. Use g = 10m/s^2 Part A) What is the ball's gravitational potential energy when it is released?
7. ### Science

A student is trying to identify the different forms of energy described in the following chart: Form of Energy Description Examples Energy A energy that travels in waves through space light radio waves Energy B energy that depends …
8. ### Science (energy)

1. What similarities do nuclear energy and chemical energy share?
9. ### science

how should each form of energy be identified?
10. ### Science

Use the terms solar, kinetic, electrical and potential energy gravitational energy to explain energy transformations used for renewable energy systems

More Similar Questions