Which example best demonstrates the process of conduction? a) a piece of paper is torn in half. b) warmed air rises above a lit candle c) a metal spoon gets warm when used to stir hot soup. d) sunlight brightens a dark room.

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .

What is the single most important equation in all of physics?

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)