A box at rest on a ramp is in equilibrium, as shown. What is the force of static friction acting on the box?

Round your answer to the nearest whole number.

N

What is the normal force acting on the box? Round your

answer to the nearest whole number.

N

20

F = 735 NK

Convection occurs when thermal energy is transferred by the movement of

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.

Aweather balloon has a volume of 52.5 liters at a temperature of 252 k. the balloon is released and rises to an altitude where the temperature is 295 k. how does this temperature change affect the gas particle motion?