Four boxes of increasing size and weight must be pushed up a ramp. To push the boxes at the same speed, what must you do?

A wave that is traveling fast can be said to have a high ___ a. Frequency b. Speed c. Wavelength d. Amplitude e. Period f. None of these

A race car travels around a curve at a constant speed. Is the race car accelerating?

A railroad freight car with mass 30,000 kg collides is moving in the + x direction at 2.00 m/s when it collides with a stationary caboose car. The two cars couple together, and move down the track at Vf. During the collision, 50.

On the electromagnetic spectrum, microwaves are located between infrared waves and radio waves. Which is true for microwaves? A) They have a higher frequency than visible light. B) They have a shorter wavelength than ultraviolet rays.

A police officer measures a straight skid mark on the road of length d=20m. the car involved is stationary at the end of the skid mark. the coefficient of sliding friciton between the car and the road is =.80.

A 15 kg child experiences an acceleration of 0.25 m/s2 as she is pulled 1.7 m horizontally across the floor by her sister. what is the change in the child's kinetic energy?

A piece of candy has 5 calories (or 5000 calories). if it could be burned, leaving nothing but carbon dioxide and water, how much heat would it give off?

The orientation in space of the electron is described by which quantum number?

Which statement best defines why sound waves are mechanical waves? A. They require a medium in which to travel B. They can travel through a vaccum C. They can travel only through solids D. They can travel through gases

Consider the uniform electric field E = (2.5 j + 3.5 k) * 103 N/C. (a) Calculate the electric flux through a circular area of radius 2.5 m that lies in the yz-plane. Give your answer in N·m2/C.