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Radio waves are electromagnetic waves that travel at a speed of 3.00 108 m/s, the speed of light. An AM radio station has an assigned frequency of 1200 kHz, which means that the radio waves broadcast by the station are at this frequency. Find the wavelength of these radio waves.
A 10 gauge copper wire carries a current of 27 A. Assuming one free electron per copper atom, calculate the drift velocity of the electrons
toad make use of resonance in a closed tube to produce very loud sound the tube is its swin bladder used as an amplifier the sound level of the creature has been measured as 71dB calculate the intensity of the sound
oscillating voltage applied to an LRC circuit, V=110cos(120Ï€t), R = 1kΩ, L = 10mH, C = 4700 µF. find the phasor angle
An empty hollow metal shell containing vacuum has a total charge of 3C on its outer surface. What is the total charge on the outer surface once this has happened
Given: A 23.0\mu F capacitor is charged by a 135.0-V power supply, then disconnected from the power and connected in series with a 0.270-mH inductor.
A jumper in the long jump goes into the jump with a speed of 12.0 m/s at an angle of 20 degrees above the horizontal. How far does the jumper jump.
A clock face has negative point charges -q, -2q, -3q, · · · , -12q fixed at the positions of the corresponding numerals. The clock hands do not perturb the net field due to the point charges
A block with a mass of 0.800 kg is connected to a spring, displaced in the positive direction a distance of 50.0 cm from the equilibrium, what is the block's period of oscillation
Calculate the angle between the lines (in degrees). Use the angle in the +y direction from the crossing point. (All distances are in meters.)
You're convinced the opera is almost over because of the large women singing a loud vibrato, What is the power coming from her voice? All of the sudden 4 more identically loud women come out of nowhere
When the Sun is directly overhead, a hawk dives toward the ground with a constant velocity of 5.30 m/s at 68.5° below the horizontal
Assume the speakers are reconnected so that the 440 Hz sounds they emit are accurately out of phase. At what positions (how far should the microphone be moved to the right) are the intensity maximum and minimum now.
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