1) If a rock is dropped from the top of a tall building, how fast will it be going after 3.0 seconds? 5) From the top of a cliff, a ball is thrown downward with a velocity of -15 m/s, how far down will it have gone after 2.5 seconds? 6) How fast will a falling ball be going after 2.5 seconds, if it has an initial velocity of -15 m/s?

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:

root word, prefixes, and suffixes

i would say