Choose the answer that best describes hydrostatic equilibrium. 1. when gravity equalizes the level of liquid on a spherical celestial object
2. when equilibrium is achieved between two celestial bodies orbiting one another 3. when liquid such as water becomes spheroid under weightless conditions 4. when a body has enough mass and gravity to create a celestial body with a round shape

The a metal retainer that keeps the rolling elements evenly spaced. n a. seal n b. separator n c. bearing n d outer race

Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.