What is the force that opposes motion and can be found anytime two surfaces are in contact?

The sun transfers thermal energy to the earth by what energy

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 250 N applied to the edge causes the wheel to have an angular acceleration of 0.940 rad/s^2.

In a model ensemble system, what do meteorologists change each time they run a simulation of the same model? a) the predicted forecast B) the mathematical equations used c) the initial conditions D) the range of possible outcomes

Why did donald hings invent the walkie talkie?

When you drive a car in a circle at a constant speed you are accelerating towards the center of your circular motion.

A 7700-kg box car traveling at 14 m/s strikes a second car at rest. The two stick together and move off with a speed of 5.0 m/s. What is the mass of the second car?

What will happen if there is a change in a magnetic field?

Question 2 10 pts The voltage in a particular circuit is 10.0 V. The current in the circuit is 20 A. What is the resistance? A. 2.0 B. 30 C. 200 D. 0.5

Where in the motion is the magnitude of the net force on the object a maximum? where in the motion is the speed a maximum?

Which movies are longer than 2 hours?