Imagine that a 500 kg box is at rest on a surface. Assume that the surface has no friction that would slow the box down. A person applies a 250 N net force to the left to push the box. a. What will be the acceleration of the box? (STATE THE FORMULA, SHOW THE CALCULATION AND ALL UNITS)

b. Describe how the motion of the box will change. (DRAW A FIGURE WITH ARROWS AND EXPLANATIONS)

c. If the same force were applied to a box with greater mass, would the acceleration be greater than, less than, or equal to your answer for Part 1a? In words and predictive calculations, explain WHY/HOW.

d. If the force were less than 250 N, would the acceleration be greater than, less than, or equal to your answer for Part 1a? In words and predictive calculations, explain WHY/HOW.

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: