Question 8 of 25 Trevor used a ramp to get a box into a truck. His input work was 250 J and
the output work was 100 J. What was the mechanical efficiency of using the
ramp?
A. 40%
B. 250%
C. 100%
D. 60%

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.

If the new moon happens on january 15th, what shape will it be on february 6th?

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?