Drew bill and kieth push horizontally on chuck (100kg). drew and bill each push to the right with force 2f and keith pushes to the left with a force of f. chuck moves and accelerates to the right at 2 m/s^2 across the floor where coefficient of friction is 0.5. what is the magnitude of keith’s push?

The magnitude of Keith’s push is 230 N

Explanation:

Given:

Mass of chuck, kg

Acceleration of the chuck, m/s².

Coefficient of friction,

Frictional force acts to left as motion is to right.

Frictional force is given as:

as net force in vertical direction is zero.

Total force to the right,

Total force to the left,

Net force acting on the chuck,

According to Newton's second law,

Keith applies a force of towards left.

Therefore, the magnitude of Keith’s push is 230 N.

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:

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )