A train accelerated from rest to a speed of 60m/s in 200 seconds it continues with the speed reached for 40 seconds before coming to a rest in another 40 seconds. sketch a velocity time graph and find the acceleration, deceleration , total distance covered and its average speed.

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?