Copernicus patterned his concept of the solar system after that of

What is the Z number of an atom with 9 protons, 8 neutrons, and 7 electrons? 7 8 9 16 17

Which change increases the electric force between objects? -Two neutral objects are moved closer together. -Electrons are added to two negatively charged objects. -Two oppositely charged objects are moved farther apart.

Reducing friction in a machine A. decreases its actual machine advantage B. decreases the work output C. increases its efficiency D. increases its ideal mechanical advantage I will name you brainliest if you get it correct

When an acrobat reaches the equilibrium position, the net force acting along the direction of motion is zero. Why does the acrobat swing past the equilibrium position

What happens to the pressure of the tyre if you pump it

Adrian read about a new antimicrobial in a popular magazine. The advertisement claimed that the product Bactokil prevents bacterial growth. So, Adrian conducted a controlled experiment to test the product claims.

A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0 m of the race. what is the average acceleration of this sprinter, and how long does it take her to reach that speed?

How are primary and secondary succession similar and how are they different?

What relates the net force exerted on an object to its mass and acceleration?

I'm a wave, the medium moves parallel to the direction that the wave travels