Which of the following describes the efficiency of real machines?

A. Efficiency is 100%

B. IMA is always larger than the AMA

C. IMA is always smaller than the AMA

D. IMA is equal to the AMA

1. An object in free fall will have an initial velocity equal to zero when: a. It is thrown vertically down b. It is dropped c. It's thrown up d. It is released horizontally

A horizontal pipe has an abrupt expansion from D1 = 5 cm to D2 = 10 cm. The water velocity in the smaller section is 8 m/s and the flow is turbulent. The pressure in the smaller section is P1 = 380 kPa.

A box is pushed 40 m by a mover. the amount of work done was 2,240j. how much force was exerted on the box a box is pushed 40 m by a mover. the amount of work done was 2,240j. how much force was exerted on the box @Physics

A cheetah goes from 0m/s to 25m/s in 2.5 s. What is the cheetah's rate of acceleration?

What are four uses of radioactive isotopes?

If an object has a mass of 20 grams and a volume of 40 cm3, what is its density in g/cm3?

Discuss how systematic and random errors influence the precision and accuracy of an experiment.

Matthew rolls a bowling ball with a speed of 2 meters/second. The ball hits the pins with 1.8 joules of kinetic energy. The mass of the bowling ball is kilograms. NextReset

Many schools require freshmen to live

What do hydroelectric plants use to generate electrical energy?