Answer:
As the car travels up the coaster it is gaining potential energy.
Explanation:
Because It has the greatest in amount of potential energy at the top of the coaster. when the car travels down the roller coaster it obtains speed and kinetic energy.
Answer:
velocity = frequency * wavelength
Given the wavelength one must also have the frequency.
It is basically shielding a magnetic field. This can be done with rubber or any other material that is thick. Normally small magnets already block the shield.
This depends on the original mass of the object having its mass doubled and the the original distance before the distance was tripled.
