When does the transfer of thermal energy end?

The train speeds passed Holly at 70 km/h north ward. This spider crawls past lukes foot in the same direction at 30 m/h. What is the velocity of the spider relative to Holly?

Whats potential energy?

Which of the following correctly describes Albert Einstein's interpretation of the photoelectric effect.

D. protons and neutrons have charges of the same magnitude but opposite sign. true or false

A small metal sphere has a mass of 0.11 g and a charge of - 21.0 nC. It is 10 cm directly above an identical sphere with the same charge. This lower sphere is fixed and cannot move.

An electron and a proton, starting from rest, are accelerated through an electric potential difference of the same magnitude. in the process, the electron acquires a speed ve, while the proton acquires a speed vp. find the ratio ve/vp.

Why water is matter? what is the reason

Restate newton's first law in terms of acceleratin

What step precedes the onset of hydrogen fusion in a star?

Manuel is holding a 5kg box how much force is he exerting on it