A man carries 40 tiles from the ground to the roof of a house. each tile has a mass of 1.5 kg . the roof of the house is 20 m above the ground. how much work does the man do against graviy on the tiles in carrying the roof? ​

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?