All of the following statements about protons are true except?

a)protons carry a positive charge
b) protons are found in the nucleus of an atom.
c) protons cicle the nucleus of an atom
d) protons have a mass of 1 amu.

Which is not a step in the rock cycle?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?