if you have to apply 40 N of force on a crowbar to lift a rock that weighs 400 N, what is the actual mechanical advantage of the crowbar?

Which category of elements have the property of being malleable an ductile?

Select Earth in the menu box so that there is now a force of gravity. Now the total energy of the weight/spring/Earth system is the sum of the kinetic energy, the elastic potential energy, and the gravitational potential energy.

Which action can be explained by physics

An ohmmeter is a common device for measuring resistance. Using an ohmmeter, you find that a certain material has a very high resistance. This material is most likely what? conductor insulator semiconductor superconductor

The loudness of sound is related to intensity, which is a function of a. resonance b. reflection c. amplitude d. magnitude

A machine does 1500 joules of work in 30 second What is the power of the machine

How do you determine the name of an isotope?

A puck rests on a horizontal frictionless plane. A string is wound around the puck and pulled on with constant force. What fraction of the disk's total kinetic energy is due to the rotation? KErot/KEtot

An object is moving at 100 m/s and comes to a stop in 25 seconds. What is its acceleration?

How long does it take earth to spin on it axis once?