Which of the following does not require molecules moving in order to heat something up? conduction radiation convection

Radiation does not require molecules moving in order to heat something up. Radiation uses thermal radiation to heat something up rather conduction and convection. No mass or medium is required for radiation to heat something up.

However, with conduction molecules bump together and will pass the heat, eventually causing something to heat up.

Convection is when something warm moves up into cooler places and then it's a chain reaction to get something warmer.

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

snell's law

refractve index = sin incidence / sin refraction