Topic : Heat 1. Why can anyone put their fingers beside the flame of a lit candle without getting burned, but not above the flame?

2. What is the purpose of putting holes near the top of a metal lampshade?

3. A metal spoon is placed in one of two identical cups of hot coffee. Which cup will be cooler after a few minutes?

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative