How may substance be tested to determine whether or not it is an element?

Ball A is negatively charged and ball B is electrically neutral. What happens to the charges of both balls when they come into contact with each other if: a) they are made of an electrical conductor b) they are made of insulator

What's inside a nucleus and makes RNA to make proteins

A dog begins walking at a speed of 6 kilometers per hour. After 1 hour, the dog is walking at a speed of 4 kilometers per hour. Which is this an example of?

Which of the following statements are true regarding electric generators? Check all that apply. Check all that apply. An electric generator converts mechanical energy into electrical energy.

If the magnetic field strength in the spectrometer is increased, will the spacing between where the 235u and 238u ions strike increase, decrease, or stay the same?

How does a walkie-talkie work and why do people still use them?

A 125-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope.

Jose wandered 4 kilometers at 2 kilometers per hour. How long did Jose wander?

What is the acceleration of a 10kg pushed by a 5n force

A device that changes thermal energy into mechanical energy