Asappp which statement explains the first law of thermodynamics a)energy is created and destroyed or b) energy is transformed and transferred.

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.