How do we know what matter is made of?

In a bicycle race on a straight road, the leader is 72.0 m from the finish line and continues to travel to the finish line with a constant speed of 12 m/s. When the leader is 72.0 m from the finish line, the second-place rider is 5.

To test the performance of its tires, a car travels along a perfectly flat (no banking) circular track of radius 130 m. The car increases its speed at uniform rate of at ≡ d |v| dt = 5.22 m/s 2 until the tires start to skid.

Carbon-14 has a half-life of 5730 years after how many half lives will 120 g of carbon-14 decay to 15 g A. One B. Two C. Three D. Four

Strengths and weaknesses of a beam bridge

Where is the location of a proton, and neutron?

A train's mass is 18181.81 kg. What is its weight?

A body of mass 20kg is set in motion by two forces 3N and 4N acting at right angles to each other, determine the magnitude of the acceleration

Gerry and Lena work in a modern physics laboratory and study nanotechnology, which is a new type of technology that allows control over individual particles as small as molecules or atoms.

What can you do to reduce the electric uses within your home?

What is the scientific name given to potato