Amerry-go-round with a a radius of r = 1.99 m and moment of inertia i = 194 kg-m2 is spinning with an initial angular speed of ω = 1.47 rad/s in the counter clockwise direection when viewed from above. a person with mass m = 68 kg and velocity v = 4.9 m/s runs on a path tangent to the merry-go-round. once at the merry-go-round the person jumps on and holds on to the rim of the merry-go-round.

Which of these describe conduction transfer of heat between two objects that are touching transfer of heat by the actual movement of war matter the process in which energy is imitated by one of the object transmitted through space and absorbed by another a process in which energy is released by the molecules breaking apart

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.