11 Answered Questions

[SOLVED] Why does holding something up cost energy while no work is being done?

17 Answered Questions

2 Answered Questions

[SOLVED] Black holes and positive/negative-energy particles

14 Answered Questions

4 Answered Questions

[SOLVED] How can gravity affect light?

8 Answered Questions

[SOLVED] What Is Energy? Where did it come from?

  • 2011-01-16 10:15:40
  • Anna
  • 38275 View
  • 79 Score
  • 8 Answer
  • Tags:   energy

3 Answered Questions

[SOLVED] Why can't energy be created or destroyed?

6 Answered Questions

[SOLVED] What keeps mass from turning into energy?

3 Answered Questions

5 Answered Questions

4 Answered Questions

15 Answered Questions

3 Answered Questions

[SOLVED] Does $E = mc^2$ apply to photons?

5 Answered Questions

3 Answered Questions

7 Answered Questions

[SOLVED] Why is there a $\frac 1 2$ in $\frac 1 2 mv^2$?

8 Answered Questions

[SOLVED] Where does gravity get its energy from?

  • 2013-08-25 12:48:54
  • Caesar
  • 42647 View
  • 29 Score
  • 8 Answer
  • Tags:   gravity energy

4 Answered Questions

7 Answered Questions

[SOLVED] How can energy be useful when it is 'abstract'?

  • 2014-10-06 09:19:27
  • radiantshaw
  • 3369 View
  • 20 Score
  • 7 Answer
  • Tags:   energy work

2 Answered Questions

[SOLVED] Conservation of Energy in a magnet

3 Answered Questions

[SOLVED] Is light affected by gravity? Why?

5 Answered Questions

9 Answered Questions

[SOLVED] Why is torque not measured in Joules?

5 Answered Questions

7 Answered Questions

[SOLVED] Can energy be taken out of the QFT vacuum?

4 Answered Questions

5 Answered Questions

[SOLVED] Is the total energy of the universe constant?

7 Answered Questions

4 Answered Questions

3 Answered Questions

[SOLVED] Why is energy in a wave proportional to amplitude squared?

  • 2011-11-09 17:49:54
  • Giuseppe Negro
  • 31101 View
  • 11 Score
  • 3 Answer
  • Tags:   energy waves string