As I use sandpaper on some rusty metal, the sandpaper gets hot because:

A 10.0-kg piece of aluminum (which has a specific heat of 900 J/kg⋅°C) is warmed so that its temperature increases by 6.0 C°. How much heat was transferred into it?

A force of 16.88 N is applied tangentially to a wheel of radius 0.340 m and gives rise to an angular acceleration of 1.20 rad/s2. Calculate the rotational inertia of the wheel.

A man pushes against a rigid, immovable wall. Which of the following statement is the most accurate

If the torques on an object balance, then it follows that this object

When 1 kg of water turns to 1 kg of ice at 0°C, it

A glider airplane is coasting horizontally when a very heavy object suddenly vanishes. As a result of this heavy object disappearing and assuming there is no horizontal air resistance,

What happens to a given volume of water when heated from 0°C to 4°C?

Two equal masses m are connected by a very light string over a frictionless pulley of mass m/2. The system has been given a push to get it moving as shown, but that push is no longer acting. In which segment of the string is the tension greater?

Consider two frictionless inclined planes with the same vertical height. Plane 1 makes an angle of 35° with the horizontal, and plane 2 makes an angle of 55° with the horizontal. Mass m1 is placed at the top of plane 1, and mass m2 is placed at the top of plane 2. Both masses are released at the same time. At the bottom, which mass is going faster?