Q. Two 1800 kg cars, both travelling at 18.00 m/s, undergo a head-on collision and stick together. Find the change in entropy of the Universe resulting from collision if the temperature is 20°C.
Q. When people sleep, their metabolic rate is about 2.6 x10-4 C/(s.kg). How numerous Calories does a 69 kg person metabolize while sleeping 9 hours?