A pulley is used to lift a heavy mass from the floor to the platform. The IMA of the system is 5 and the AMA is 2.5. What is the efficiency of the system?

The American space station launched in 1973 disintegrated as it fell to earth in 1979. a. True b. False

While on vacation, a student picks up surface rocks from around the world to add to her rock collection. The composition of her rock samples will be primarily

What is a permanent magnet

A baseball is located at the surface of the earth. Which statements about it are correct? (There may be more than one correct choice.

What is the current in a 120V circuit if the resistance 10?

3. What is the kinetic energy of a 1300 kg car moving at 26.3 m/s?

Kendall has empty graduated cylinder with markings and an identical graduated cylinder partway filled with water. She also has a balance and a marble. Which statement best describes what Kendall can do? A.

2. With regard to the pH scale, a solution with a pH A. higher than 7 is considered an acid. B. lower than 7 is considered basic. C. of 6 is considered neutral. D. close to 14 is considered a strong base.

If a car rolls gently off a vertical cliff, how long does it take to reach 90km/hr.

In the game of volleyball, what skill relates to Newton's second law