Here’s a great everyday use of the physics described in this chapter. if you are trying to get ketchup out of the bottle, the best way to do it is to turn the bottle upside down and give the bottle a sharp upward smack, forcing the bottle rapidly upward. think about what subsequently happens to the ketchup, which is initially at rest, and use newton’s first law to explain why this technique is so successful.

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.

Convection currents are caused by differences in what two things?

Identify some abiotic characteristics of the tundra biome.