If you push a book against a wall hard enough, it will not slide down even though gravity is pulling it. Use Newton’s laws of motion to explain why the book does not fall.

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force