Apackage of mass 5.30 slides a distance 1.41 down a long ramp that is inclined at an
angle12.3 below the horizontal. the coefficient of
kineticfriction between the package and the ramp is = 0.315
.
a ) calculate the work done on the package by friction.
b) calculate the work done on the package by gravity.
c) calculate the work done on the package by the
normalforce.
d) calculate the total work done on the package.
e) if the package has a speed of 2.25 at the top of the ramp, what is its speed after
slidingthe distance 1.41
down the ramp?

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:

answer and explanation;