An L-R-C series circuit consists of a 2.50- μ F capacitor, a 5.00-mH inductor, and a 75.0-Ω resistor connected across an ac source of voltage amplitude 15.0 V having variable frequency, (a) Under what circumstances is the average power delivered to the circuit equal to 1 2 V rms I rms ? (b) Under the conditions of part (a), what is the average power delivered to each circuit element and what is the maximum current through the capacitor?
An L-R-C series circuit consists of a 2.50- μ F capacitor, a 5.00-mH inductor, and a 75.0-Ω resistor connected across an ac source of voltage amplitude 15.0 V having variable frequency, (a) Under what circumstances is the average power delivered to the circuit equal to 1 2 V rms I rms ? (b) Under the conditions of part (a), what is the average power delivered to each circuit element and what is the maximum current through the capacitor?
An L-R-C series circuit consists of a 2.50-μF capacitor, a 5.00-mH inductor, and a 75.0-Ω resistor connected across an ac source of voltage amplitude 15.0 V having variable frequency, (a) Under what circumstances is the average power delivered to the circuit equal to
1
2
V
rms
I
rms
? (b) Under the conditions of part (a), what is the average power delivered to each circuit element and what is the maximum current through the capacitor?
Blue light has a wavelength of 485 nm. What is the frequency of a photon of blue light?
Question 13
Question 13
What is the wavelength of radiofrequency broadcast of 104 MHz?
Question 14
Question 14
1 Point
3. The output intensity from an x-ray exposure is 4 mGy at 90 cm. What will the intensity of the exposure be at 180 cm?
Question 15
Question 15
1 Point
What is the frequency of an 80 keV x-ray?
Under what condition is IA - BI = A + B?
Vectors
À
and
B
are in the same direction.
Vectors
À
and B
are in opposite directions.
The magnitude of vector
Vectors
À
and
官
B
is zero.
are in perpendicular directions.
For the vectors shown in the figure, express vector
3 in terms of vectors M and N.
M
S
=-M+ Ň
==
S=м- Ñ
S = M +Ñ
+N
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