A machine performs 90 J of work in lifting an object. It requires 120 J of work do lift it. How much heat is created by the machine?

The word supersonic describes: A. Motion faster than the speed of sound B. Frequencies of sound too high for the Human Ear to Hear

A ball is dropped out of a window and falls for 8.75 s. What is the ball's final velocity?

An object's inertia causes it to come to a rest position. True or false

The conductors that carry the current to electrical devices and? equipment are the heart of all electrical systems. There are associated? whenever current flows through a conductor. Select one: a. relay / responses b. service / effects c.

Anne rode 3000 m east. She then turned and rode 2000 m to the west in 1000 seconds. What was her velocity?

A syrup added to an empty container with a mass of 115.25g. When 0.100 pint of syrup is added, the total mass of the container and syrup is 182.48g. Determine the density ... ?

MOST high schools teach biology, then chemistry, then physics. What do you see as some of the disadvantages of the traditional sequence to both students and teachers.

If you break a bar magnet in half, each half

If a forklift raises a 76-kg load a distance of 2.5 m, about how much work has it done?

When a fork is placed in a hot piece of lasagna, thermal energy is transferred up the fork by ...