An athlete stretches a spring an extra 28.6 cm beyond its initial length. how much energy has he transferred to the spring, if the spring constant is 52.9 n/cm?

Which statement describes the gravitational force and the electrostatic force between two charged particles? 1. The gravitational force may be either attractive or repulsive, whereas the electrostatic force must be attractive. 2.

A yellow ball with a mass of 2 kg is rolling across the floor at 3 m/s. A red ball with a mass of 3 kg is rolling across the same floor at 3 m/s. Which ball has greater kinetic energy, and why?

How does latitude affect the solar energy that reaches the earth?

Are the phases of the moon the same everywhere on earth

Which type of rock contains minerals arranged in crystals and forms when molten rock cools and turns solid? a. metamorphic rock b. fossilized rock c. igneous rock d. sedimentary rock

Sometimes, even with a wrench, one cannot loosen a nut that is frozen tightly to a bolt. It is often possible to loosen the nut by slipping one end of a long pipe over the wrench handle and pushing at the other end of the pipe.

You ride your bike for a distance of 30km. you travel ata a speed of 0.75km/minute. how many minutes does it take

Find the moment of inertia about each of the following axes for a rod that is 0.360 {cm} in diameter and 1.70 {m} long, with a mass of 5.00*10-2 {kg}.1. About an axis perpendicular to the rod and passing through its center. (in I=kg*m^2) 2.

If a small machine does 2500 joules of work on an object to move it a distance of 100 meters in 10 seconds, what is the force needed to do the work? What is the power of the machine doing the work?

If a freely suspended vertical spring is pulled in downward direction and then released, which type of wave is produced in the spring?