Q1. Blood is capable of carry excess energy from the interior to the surface of the body, where the energy is dispersed in a number of ways. As a person is exercising 0,6kg of blood flows to the surface of the body and releases 2000J of energy. The blood arriving at the surface has the temperature of the body interior (37 degrees Celsius) assume that the blood has the same heat capacity as water, establish the temperature of the blood that leaves the surface and returns to the interior.

Q2. A 35.0-g bullet moving at 475 m/s strikes a 2.7-kg bag of flour that is on ice, at rest. The bullet passes through the bag, leaving at 250 m/s. How fast is the bag moving while the bullet exits?

Q3. The path of an electron, travelling at 3.7 × 104 meters/second, is making the right angle to a magnetic field. A single electron experiences a force of 2.2 × 10-15 Newton's while in the field. What is strength of the magnetic field? The value of q = -1.6 × 10-19 coulombs.