A push on a 1-kg brick accelerates it. Neglecting friction, equally accelerating a 10-kg brick requires 10 times as much force. Using your knowledge of Newton’s Second Law, explain why this is correct.

Can anybody me with this? ? (picture included.)

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.

What do we mean by the event horizon of a black hole?