A scientific theory is an explanation for the observed facts that can be tested and falsified. Therefore, its B.
Friction, lack/loss of kinetic energy
2 J / 4 C = 1/2 joule per coulomb.
That's 1/2 volt.
Answer:
The Doppler effect for electromagnetic waves such as light is of great use in astronomy and results in either a so-called redshift or blueshift. It has been used to measure the speed at which stars and galaxies are approaching or receding from us; that is, their radial velocities.
c) only from warmer areas to colder areas.
The second principle of thermodynamics states that heat can only flow from a hotter body to a cooler one. Specifically, Clausius statement says that is not possible for heat to move by itself from a lower temperature body to a higher temperature body.
