A 50 kg boy running with a velocity of 6 m/s passes by a 2000 kg truck at rest. Which one has greater momentum, the truck or the boy?

Light waves will bend when passing from one transparent substance to another unless: a. Constructive interference occurs / b. Destructive interference occurs / c. The light hits the substance at an angle of 60 degrees / d.

A roller coaster track is 3,000 meters long. It takes 100 seconds to travel once around the roller coaster. Is the velocity constant throughout the trip? Explain.

When do centromeres split

Two musical tones are played at the same time. One has a wavelength of 1 meter and the other a wavelength of 1.003 meter. What is the frequency of these tones that one hears?

Why sheets of newspaper can be used to keep ice cream cold and keep fish and chips hot?

Imagine that you replace the block in the video with a happy or sad ball identical to the one used as a pendulum, so that the sad ball strikes a sad ball and the happy ball strikes a happy ball.

Under what conditions will an object experience a gravitational force? Under what conditions will an object experience an electric force? Under what conditions will an object experience a magnetic force?

A basketball player pushes down with a force of 34 N on a basketball that is inflated to a gauge pressure of 9 x 104 Pa. What is the diameter of contact between the ball! and the floor?

Match these terms with their definitions: 1. unit of electrical resistance ampere 2. unit of electromotive force or electrical potential ohm 3. unit for measuring the strength of an electric current volt 4. unit of electrical power watt

In which is momentum conserved: an elastic collision or an inelastic collision?