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

What describes a sun center solar system

A car tire has a volume of 0.0150 cubic meters on a cold day at a temperature of 5.0 °C and atmospheric pressure of 1.02 atm. The gauge pressure is measured to 1.70 atm. After the car is driven the air temperature has risen to 45.

What information does a star's spectrum offer about the star?

An object has a mass of 8.00 kg what is the gravitational force on the object on earth

How do you find frequency in uniform circular motion?

The voltage across the primary winding is 350,000 V, and the voltage across the secondary winding is 17,500 V. If the secondary winding has 600 coils, how many coils are in the primary winding? 30 583 12000 332500

A 200 watt t. v. is used for 20 hours in a week. If it is used for four weeks then what is cost of electricity if rate is 5rs/kwh

In an experiment, the control is never changed by the scientist not important to the scientist not recorded by the scientist changed by the scientist

When you catch a baseball, what kind of work do you do, negative or positive? by catching the ball, what do you change? what energy does it gain or lose?

All describe work except A) a team of dogs dragging a sled B) a jokey sitting on a horse C) a bowler lifting a bowling ball