What three things happen when air is warmed?

it expands
it contracts
it becomes lighter
it becomes heavier
it rises
it sinks

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you