Atrain is moving 35 m/s to the east. it speeds up to 42 m/s east over the
course of 40 seconds. what was the train's acceleration?
o a. 0.175 m/s2 west
o b. 5.71 m/s2 east
o c. 5.71 m/s2 west
o d. 0.175 m/s2 east

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

Acapacitor is storing energy of 3 joules with a voltage of 50 volts across its terminals. a second identical capacitor of the same value is storing energy of 1 joule. what is the voltage across the terminals of the second capacitor?

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?