A machine does 1500 joules of work in 30 second What is the power of the machine

Two spacemen are floating together with zero speed in a gravity-free region of space. The mass of spaceman A is 140 kg and that of spaceman B is 100 kg. Spaceman A pushes B away from him with B attaining a final speed of 0.5 m/s.

As objects grow farther apart, what happens to the force of gravity between them?

Which of the following make up the three regions of the brain? A. anteriorbrain, midbrain, and innerbrain B. forebrain, midbrain, and hindbrain C. forebrain, middlebrain, and innerbrain D. anteriorbrain, betweenbrain, and posteriorbrain

Liquid water heats up and cools down slowly. What causes this property?

A 2.00-kg block of ice is moving on a frictionless horizontal surface. At t = 0 the block is moving to the right with a velocity of magnitude 3.00 m/s. (a) Calculate the velocity of the block (magnitude and direction) after a force of 5.

What happens when a plastic lid sprinkled with iron filings is placed over a magnet?

A stuntman drives a car with a mass of 1500 kg on a drawbridge. The car accelerates with a constant force of 10,000 N. While he is driving, the drawbridge is raised to an incline of 30°.

In this channel of communication, messages are carried by sound and light waves. a. teleconference b. face-to-face c. voicemail d. hard copy memos

Cardiovascular exercise can

Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, but Kathy leaves the starting line 1.00 s after Stan does. Stan moves with a constant acceleration of 3.1 m/s2 while Kathy maintains an acceleration of 4.