A train is moving at 35 m/s to the east. it speeds up to 42 m/s east over the course of 40 seconds. what was trains acceleration

You find a yellow rock and wonder if it is gold. how could you apply the scientific method to this problem

If you wanted to describe an increase in volume to your class, which of the following would be the best item to use? A. a wooden box with holes B. a soccer ball and a pump C. ice in a glass and a thermometer D. a rock and a cup of water

How does the kinetic energy of a substance's particles in the liquid phase compare to their kinetic energy in the gas phase?

Hospital x-ray generators emit x-rays with wavelength of about 15.0 nanometers (nm), where 1nm=10-9m. what is the energy of a photon of the x-rays?

Does electro magnetic waves require a medium to travel though one location

A car travels 35.0 mph north for 1.00 hour, then 40.0 mph east for 0.0500 hour, and finally 50.0 mph northeast for 2.00 hours. Calculate the average speed.

A 500 lb steel beam is lifted up by a crane to a height of 100 ft and is held there. A) How much work is being done to hold the beam in place? B) How much work was done to lift the beam?

If Light is shone through the slits of a card onto a sheet of white paper describe what is seen.

When you break a magnet in half, how many poles does each piece have? Explain.

What can you use to unscrew a tiny screw?