Asinger sings a note into a microphone. which of the parts of the wave would be affected by the microphone and how?
a) d, the frequency would get higher.
b) c, the wavelength would get longer.
c) c and d, the amplitude and wavelength would increase.
d) a, b and d. the amplitude and crest would be higher, while the trough would be lower.

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.