During heavy exercise, the body pumps 2.05 L of blood per minute to the surface, where it is cooled by 2.20°C. What is the rate of heat transfer (in W) from this forced convection alone, assuming blood has the same specific heat as water and its density is 1050 kg/m3?

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s