A horizontal force is acting on a block moving on a rough horizontal surface. The force has the same magnitude as the maximum force of static friction between the block and the surface. If the coefficients of friction are Hs = 0.75 and Hk = 0.50. Find the acceleration (in m/s2) = of the block.

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:

c) up is the direction the magnetic force is acting on the charge.

talk back to him about the sport and show him your expertise or leave the room