What occurs when someone places an ice pack on an injured ankle?

conduction causes the ice pack to lose thermal energy.
conduction causes the ankle to gain thermal energy.
cold from the ice pack is transferred to the ankle.
heat from the ankle is transferred to the ice pack.

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?