It keeps spinning i do not know how to take it off.

Which of the following represents an upside-down image?

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.

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?