A cyclist applies the brakes on her bicycle with a force of -75.0 N. As a result, the bicycle comes to rest after traveling 11.0 m with the brakes applied. How
much work is done by the brakes?
A. -75.0 N
B. 825 J
C. -825 J
D. 6.82 N. m


Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.

The movement of electrons between atoms is called an