Which of the following describes an action-reaction pair?
o
O
O
A. Friction slows you down, and the normal force holds you up.
B. You push a car forward, and the car pulls you forward.
O
C. Your hat pushes down on your head, and your feet push down
the ground
O
D. Earth's gravity pulls down on you, and your gravity pulls up on
Earth

A110-pound person pulls herself up 4.0 feet. this took her 2.5 seconds. how much power was developed? 0.13 hp 0.32 hp 2.0 hp 3.1 hp

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon