A 0.140 kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.900 m/s . It has a head-on collision with a 0.297 kg glider that is moving to the left with a speed of 2.25 m/s . Suppose the collision is elastic.

Answer with Explanation:

We are given that

Mass of glider=m=0.14 kg

Initial speed of first glider, u=0.9 m/s

m'=0.297 kg

Initial speed of second glider, u'=-2.25m/s

a.We have to find the magnitude of final velocity of 0.140 kg glider.

The collision is elastic then the final velocity of 0.140 kg glider

Substitute the values

Magnitude of final velocity of 0.140 kg glider=3.38 m/s

b.

Hence, the magnitude of final velocity of 0.297 kg glider=0.23 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:

the answer is a. at the equator