Afire is burning in a fire place where is the convection
a. you touch the warm bricks next to the fireplace
b. the fire heats the bricks at the bottom of the fireplace
c. heat is rising up the chimney

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

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

What causes the formation of ocean currents?