An ac voltmeter, which displays the rms voltage between the two points touched by its leads, is used to measure voltages in the circuit shown in the figure(figure 1). in this circuit, the ac generator has an rms voltage of 6.00 v and a frequency of 60.0 khz. the inductance in the circuit is 0.310 mh, the capacitance is 0.120 μ, ω and the resistance is 4.60. a) calculate the rms voltage across resistor r
b) calculate the rms voltage across inductor l
c) calculate the rms voltage across capacitor c

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

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