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An audio amplifier provides an alternating rms potential difference of 15.0V. A loudspeaker connected to the amplifier has a resistance of 10.4 ohm.
1. what is the rms current in the speaker?
2. what are the maximum values of the current and the potential difference?
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How many electrons must be removed from each of two 4.4-kg copper spheres to make the electric force of repulsion between them equal in magnitude to the gravitational attraction between them?
Walk 10 miles in the direction 54 degrees east of due north. How far will you be from your starting point
A proton is accelerated from rest through a potential difference of 350MV, What's the ratio of kinetic to rest energy
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