A machine has an efficiency of 80% how much work must be done on the machine so to make it do 50000 J of outfit work

A 50g ball rolls across a table at 2 m/s. a 100g ball rolls across the same table at 1 m/s

Starting at its rightmost position, it takes 2 seconds for the pendulum of a grandfather clock to swing a horizontal distance of 18 inches from right to left and 2 seconds for the pendulum to swing back from left to right.

Which best describes why a liquid needs a container when a solid does not? Solids fill their containers, and liquide have definite shapes, Solids have definite shapes, and liquida fill their containere, Solids particles do not expand to fill their

What part of the electromagnetic spectrum that is necessary for the sense of sight in humans?

Which simple machine is the lid of a jar? a lever a screw an inclined plane a wheel and axle

Sara tells Michael she is 160 centimeters tall, while Michael says

Express 9.39 x 109 seconds in terms of days

What is the energy equivalent of 5.0 kg of mass? be sure to show all work to support your answer?

An ant carries food at a speed of 1 cm/s. How long will it take the ant to carry a cookie crumb from the kitchen table to the ant hill, a distance of 50 m? Express your answer in seconds, minutes and hours.

What must you know in order to determine the gravitational force between two objects?