01. Two de machines of the following rating are required: DC machine 1: 120 V, 1500 rpm, four poles
DC machine 2: 240 V, 1500 rpm, four poles
Coils are available which are rated at 4 volts and 5 amperes. For the same number
for both machines, determine the
(a) Type of armature winding for each machine.
(b) Number of coils required for each machine.

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.