Explain why an ordinary bar magnet doesn't rotate and align itself with Earth's magnetic field when you place it on a table.

What type of change accurs when a substance stays the same

What is the best prediction for what will happen when all of the hydrogen in the Sun has undergone fusion?

Dan shoots a hockey puck. It travels away from you in a straight line at an average velocity of 20m/s. Where is it after 5 seconds after he shoots it?

An object with total mass mtotal = 15.8 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.5 kg moves up and to the left at an angle of θ1 = 18° above the - x axis with a speed of v1 = 27.5 m/s.

A 2200 kg car starts from rest and speeds up to 12 m/s in 5.2 s. The net force acting on the car is?

perature is 0◦F. How much taller is the building when the temperature is 107◦F? The linear expansion coefficient of steel is 1.1 * 10-5 (◦C) - 1.

A weightlifter lifted 800 Newtons to a height of 2.5 meters. What is the power output if this was done in 1.22 seconds?

What conditions must be present for a translational and rotational equilibrium of a rigid body?

In objects motion will not change is the force is acting on the object are blank

How fast or slow an object is moving and in what direction