A student gains 2.1 lb in two weeks. Part A How many grams did he gain?

8. What is the mass number of an atom that has 12 neutrons and 11 protons? A 11 B 24 C 23 D 12

A wire of Nichrome (a nickel-chromium-iron alloy commonly used in heating elements) is 1.3 m long and 1.6 mm2 in cross-sectional area. It carries a current of 3.2 A when a 2.0 V potential difference is applied between its ends.

What is the purpose of using a generator

What is the smallest number of whole logs (rho = 715 kg/m3, radius = 0.0815 m, length = 2.76 m) that can be used to build a raft that will carry four people, each of whom has a mass of 84.0 kg?

Which change in a limiting factor would increase the carrying capacity for earthworms on the ground of a mixed-oak forest? A. increase in the fern population size B. decrease in the ant population size C. increase in the grass population size D.

A student throws a coin vertically downward from the top of a building. The coin leaves the thrower'S hand with a speed of 15.0m/s. How far does it fall in 2.00 s?

A force between two objects?

Two iron rods are placed horizontally, touching end-to-end. One end of one rod is heated. After some time, the other rod also feels warm to touch.

Which part of the motor is responsible for reversing the flow of current?

In a generator, as the magnet spins, opposite poles of the magnet push the electrons in opposite directions. This back-and-forth movement of electrons is called what? A) revolutions per minute B) direct current C) alternating current.