Determine whether or not there can be forces acting on an object that is at rest

An element's atomic number is 38. How many protons would an atom of this element have?

The unit for atomic mass is A. Gram B. Amu C. Pound D. None of the above

A windmill produces 1400 watts of electric power that is used to heat water. The efficiency is 100%. How long will it take to raise the temperature of 40 gallons of water by 50∘F?

What is a series circuit? a circuit that is repeating a circuit that consists of one loop a circuit that goes in a straight line a circuit that has two loop

If my cylinder of air lasts 60 minutes while i am at the surface breathing normally, assuming all else is the same, how long will it last at 20 metres/66 feet breathing normally?

when we examine the structures of the other terrestrial planets in our solar system, we see that their structure is similar to Earth's. Why do you think this is the case?

An ant is crawling along a straight wire, which we shall call the x axis, from A to B to C to D

How does a very heavy object resist sliding sideways when you push hard on it?

A go-cart traveled at 200 meters in 18 seconds. what was the average speed of the go cart?

A cartoon plane with four engines can accelerate at 8.9 meters per second squared