A particle of mass m moves in a straight line wih velocity v(t), subject only to a linear air resistance F = -1mv. Assume the particle starts with velocity u in x = 0. dv dt 1. Using the change of variables = 21 find the velocity of the particle as a function of its position, x, the initial velocity, u, and its mass, m. dv dx v(x) = 2. Calculate the distance à travelled by the particle before coming to a stop. x =

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Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.