Blood can carry excess energy from the interior to the surface of the body, wher
ID: 1293066 • Letter: B
Question
Blood can carry excess energy from the interior to the surface of the body, where the energy is dispersed in a number of ways. While a person is exercising, 0.5 kg of blood flows to the body's surface and realwases 1570 J of energy. The blood arriving at the surface has the temperature of the body's interior, 37.1 deg C. Assuming that blood has the same specific heat capacity as water, determine the temperature of the blood that leaves the surface and returns to the interiorBlood can carry excess energy from the interior to the surface of the body, where the energy is dispersed in a number of ways. While a person is exercising, 0.5 kg of blood flows to the body's surface and realwases 1570 J of energy. The blood arriving at the surface has the temperature of the body's interior, 37.1 deg C. Assuming that blood has the same specific heat capacity as water, determine the temperature of the blood that leaves the surface and returns to the interior
Explanation / Answer
Specific heat capacity of water = 4200
Therefore, using the equation Energy = mass x SHC x temp change
So -1570 = 0.5 x 4200 x temp change
temp change =.74
So we had the temp change and the original temp: 37.1 + (-0.74) = 36.36degrees!