A hockey puck of mass m is moving in the +x-direction at speed vP1 on a frictionless, horizontal surface. It collides with a stone of mass 2m that is initially at rest. After the collision the hockey puck is moving at an angle θ measured from the +x-direction toward the +y-direction and the stone is moving at the same angle θ but measured from the +x-direction toward the −y-direction. In order for the y-component of momentum to be conserved,

a) what must be the ratio of the final speed vS2 of the stone to the final speed vP2 of the hockey puck?

b) Use conservation of the x-component of momentum to find vS2 in terms of v1 and θ, where v1=vP1.

c) Use conservation of the x-component of momentum to find vP2 in terms of v1 and θ, where v1=vP1

im not to sure what it is

it is easily magnetized.

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:

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.