A student measures the speed of a rolling ball three times. She adds the measurements and divides by 3. What quantity did the student calculate?

How much heat is absorbed by a 29g iron skillet when its temperature rises from 9oC to 105oC?

Where are most faults located

A car has the same kinetic energy when it is traveling south at 30 m/s as when it is traveling northwest as when it is traveling northwest at 30 m/s. Is the momentum of the car the same in both cases

A conservative force does the same work regardless of the path taken. O A. True O B. False

The radius of the sun is about 700,000,000 meters, the radius of the planet Venus is about 6,000,000 meters, and the radius of the supergiant star Betelheuse is about 500,000,000,000 meters. Which of these statements is true (t) or false (f) ? A.

A force of 9.00 newtons acts at an angle of 19.0° to the horizontal. What is its component in the horizontal direction? A 15.6 newtons B. 9.00 newtons C 7.85 newtons D. 8.51 newtons E. 2.93 newtons

True or False The greater the speed of an object, the less kinetic energy it possesses.

Is net force the same thing as gravity

When was the first electric typewriter produced and by what company

What is the mass, in kilograms, of an avogadro's number of people, if the average mass of a person is 150 lb?