Motor 1 and motor 2 each lift objects of equal weight. They both have the same power rating but motor 2 lifts the weight faster. Which motor is more efficient?

Motor 1

Or

Motor 2

Which kingdoms are all organisms multicellular

4. A 1.0 kg ball has a momentum of 12 kg m/s. What is the ball' speed?

Why is it that silver heats quicker than aluminum?

Rozważ, dlaczego telewizyjne satelity stacjonarne krążą nad równikiem. Zastanów się, czy można byłoby umieścić satelitę geostacjonarnego tak, aby jego orbita znajdowała się cały czas nad równoleżnikiem, np. przebiegającym przez Warszawę.

You input 75 J of work with a wedge. If the wedge does 65 J of useful work, what if the efficiency of the wedge?

If the abosolute of a gas is 600 k, the temperature in degrees Celsius is

How does an electromagnetic wave propagate itself? a. A changing magnetic field induces an electric field perpendicular to the magnetic field. b. A changing electric field induces a magnetic field perpendicular to the electric field. c.

Which of the following is an example of convection? A. hot air rising and cooler air falling B. a hot object transferring heat to a cooler one C. a hot oven warming the air around it D. the rays of the Sun warming the earth

A 50,000 kg locomotive is traveling at 10 m/s when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop? Assume the track is level.

A rectangular loop of wire with sides 0.262 and 0.401 m lies in a plane perpendicular to a constant magnetic field (see part a of the drawing). The magnetic field has a magnitude of 0.