What is a simple machine that has two or more simple machines working together

How would reversing the wheel's initial direction of rotation affect the result?

A car accelerates at 2 meters per second per second. assuming the car starts from rest, how much time does it need to accelerate to a speed of 30 m/s?

Which rocky planet has the strongest magnetosphere? A) Mars B) Earth C) Mercury D) Venus

List five examples of electromagnetic radiation. what is the speed of all forms of electromagnetic radiation in a vacuum

What is the average speed, over the first 3.0 s of its motion, of a pebble released from rest off a bridge?

V=345m/s, 7210Hz, X=?

As a mercury atom absorbs a photon of energy, an electron in the atom changes from energy level d to energy level e. Determine the energy of the absorbed photon in electronvolts.

During an exothermic reaction, the energy given off comes from atoms being consumed mass being burned into energy the breaking and forming of bonds mass being created

Can electrostatic attract both pull and pull?

Ways that charges can be transferred