Does light have mass?

What gives you a frame of reference for your speed when you are riding a train a. the wheels of the train b. the sky overhead c. the train tracks d. the station

What is the frequency of radiation whose wavelength is 0.86 nm,?

what happens to the gravitational force when the distance between them stays the same and the mass of both objects is doubled

Which is an example of the kinetic-molecular theory not holding true for a gas? The average kinetic energy of particles depends only on the temperature. The particles in a gas travel in straight lines in a continuous, random motion.

How does changing the angle of an inclined plane affect the force and distance required to perform work?

You slide a box of books at constant speed up a 30° ramp, applying a force of 200 n directed up the slope. the coefficient of sliding friction is 0.18.

Two trains leave the same station at the same time. The first train travels north at 60 mph. The second train travels west at 45 mph. Find how fast the distance between the trains is changing two hours after the trains have left.

If the room radius is 4.5 m, and the rotation frequency is 0.8 revolutions per second when the floor drops out, what is the minimum coefficient of static friction so that the people will not slip down?

Energy of motion is known as what energy

While a constant total force of 17 n is exerted on a cart, the cart's acceleration is 5 m/s2. find the mass of the cart?