At what frequency will the inductive reactance of a 44-mH inductor be equal to the capacitive reactance of a 27-pF capacitor?
What will be an ideal response?
0.15 MHz
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The Hubble time is actually the age the Universe would be if it were totally closed
Indicate whether the statement is true or false
For a swinging pendulum, the maximum angle that the pendulum’s string makes with the vertical corresponds to what in the pendulum solution ? = A cos (? t + ?)?
A. A B. ? C. ? D. Something else (specify)
When light goes from one material into another material having a HIGHER index of refraction,
A) its speed, wavelength, and frequency all decrease. B) its speed and wavelength decrease, but its frequency stays the same. C) its speed decreases but its wavelength and frequency both increase. D) its speed decreases but its frequency and wavelength stay the same. E) its speed increases, its wavelength decreases, and its frequency stays the same.
A helium-neon laser emits red light having a wavelength of 6.4 × 10^?7 m and a power of 0.5 mW. How many photons are emitted each second?
a. 6.4 × 10^38 b. 1.6 × 10^21 c. 3.2 × 10^25 d. 2.6 × 10^18 e. 1.6 × 10^15