A small toy school bus rear-ends a big toy school bus initially at rest. The bigger bus is several times heavier than the smaller one.
Which of the following statements are true if the collision is totally inelastic?

a) The two busses continue together at the same speed.
b) Mechanical energy is conserved.
c) The small bus exerts the same amount of force on the big bus as vice versa.
d) Momentum is conserved.
e) The small bus will go backwards.

What is the radius of the circular path ofa charged particle in a magnetic field?

Anybody wanna ? (picture included? )

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?