Assume 40% of the input electricity power is wasted as heat in an incandescent light bulb. (This value is higher in real life, but we will use this estimate.)
1. If you have 10 incandescent bulbs in your apartment, calculate the energy wasted as heat per week. (Each bulb is 75 W (J/s), and your lighting duration is 6 hours per day.)

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.