5. At last, it's time to go diving! You are going to dive offshore, but you'll need to drive to the site. You load your gear into the trunk of the car and take off. (10 points)
a. What type of device does the car use to move? Describe in terms of the second law of
thermodynamics, and draw a diagram of how this device operates, 16 noints)

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b. b. at twice the distance, the magnitude of the field is 2b. c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.