The speedometer in a car does not measure the car's velocity because

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?