Which statement best describes the motion of the dots? a) they are slowing down because less distance is covered per unit of time b) they are speeding up because more distance is covered per unit of time c) the speed is constant because the distance between the dots remain the same

Provided the dots represent time-lapse snapshots of an object's motion from left to right, then

(a) The underlying object is slowing down because the distance between adjacent snapshots (dots) decreases with time

(the answer is intentionally reworded to avoid sounding nonsensical)

The answer is B or A im pretty sure its B thou

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:

electrical power