Answer: C. 20J
Explanation: im pretty sure sorry if im wrong :(
Answer:
A magnet is demagnetized. There is a decrease in chemical potential energy. There is an increase in thermal energy. And there is an increase in energy in the form of demagnetization.
Answer:
The minimum coefficient of static friction for the box on the floor of the trunk is 0.54.
Explanation:
Given that,
Radius of the unbanked curve, r = 48 m
The speed of the car on the curve, v = 16 m/s
We need to find the minimum coefficient of static friction for the box on the floor of the trunk. It can be calculated by balancing the centripetal force and the force of gravity as :




So, the minimum coefficient of static friction for the box on the floor of the trunk is 0.54. Hence, this is the required solution.