Amass is stretched 4 centimeters from the equilibrium position of a spring. if the displacement is doubled, what can be concluded about the restoring force?

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

If steel is more dense that lake water, why can a boat float

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix. b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds. c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer. d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.