How much force is needed to push a 10n box up a ramp that is 10m long and 2m high

Ramp is 2 m high and 10 m long so we can find the angle of inclination of the ramp using trigonometry

now in order to push the block upwards we need to counterbalance the component of weight along the inclined plane

The two components of weight is given as

So here x component of the weight is counterbalanced by the Normal reaction force.

While we need to apply 1.96 N force along the inclined plane to push the box upwards.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered