The electric motor has an input energy of 50,000 joules each second. The motor transfers 35,000 joules of useful energy each second. Calculate the efficiency of the electric motor (show workig out too)

For a cars speedometer what is the calculated speed over an entire trip

A driven gear with 60 teeth is driven by a driven gear of 30 teeth what is the VR of the gear

If you create and plant rows that are perpendicular to the slope of fields instead of up and down slopes to prevent erosion you are

The decomposition of water into hydrogen gas h2 and oxygen gas o2 can be moldled by the balanced chemical equation

What is the main difference between geocentric and heliocentric models of the solar system

What are the strengths and limitations of the doppler method?

Voltage can exist without A. current. B. resistance. C. a closed circuit. D. all of these

During a football game, a receiver has just caught a pass and is standing still. Before he can move, a tackler, running at a velocity of 2.60 m/s, grabs and holds onto him so that they move off together with a velocity of 1.30 m/s.

What effect does an increase in temperature have on viscosity?

Aman tosses a jart upward with a velocity of 14.1 m/s a 60° angle