A machine is designed to lift an object with a weight of 12 newtons. If the input force for the machine is set

at 4 newtons, what is the mechanical advantage of the machine?

How fast would a star have to be moving so that the frequency of light we receive from it is 10 percent higher than the frequency of the light is it emitting? Assume the star is moving either directly away from us or directly toward us. A. 1.

What is transferred to an object when is done A:energy B:force C:effort D:resistance

A jet travels at 580m/s how long does it take to travel 500meters? How long does it take to travel 8.75km?

If you perform 40 joules of work lifting a 10-N box from the floor to a shelf, how high is the shelf?

A 44 kg block lies on a horizontal frictionless surface. A horizontal force of 110 N is applied to the block. (a) Determine the acceleration of the block. (b) Calculate the distance the block will travel is the force is applied for 8 s.

Why does a metal spoon left on a bowl of hot soup become warm? A) Metal is a conductor. B) Metal is an insulator. C) Metal produces its own heat. D) Metal heats up from magnetism.

What does the heat shock step of the transformation procedure accomplish?

An olympic hurdler accelerates at a rate of 15.5 m/s2. what is the rate in miles/min2?

What is the conservation of energy?

What data are needed to calculate the actual mechanical advantage of a machine