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Doncouse_Jeremy_Week7

# Doncouse_Jeremy_Week7 - 0.01*10 8 Hz which is in the...

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Running head: WEEK 7 1 1 Week 7 Assignment Jeremy Doncouse Mountain State University

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Week 7 2 2 Week 7 Assignment Questions - Phys 101 Online Electromagnetism and EM Waves 1. The generator at a power plant produces AC at 48,000 V. A transformer step this up to 345,000 V for transmission over power lines. If there are 1000 turns of wire in the input coil of the transformer, how many turns must there be in the output coil? 48000 V/1000 = 345000 V/N 2 N 2 = 7187 turns 2. The wavelength of an electromagnetic wave is measured to be 300m. (a) What is the frequency of the wave? (b) What type of EM wave is it? 3.00*10 8 m/s 300 m =
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Unformatted text preview: 0.01*10 8 Hz which is in the frequency of radio waves . 3. A piece of iron is heated with a torch to a temperature of 6000 K. How much more energy does it emit as blackbody radiation at 6000K than it does at room temperature, 300 K? 7.348*10 7 J 4. What is the wavelength of the peak of the blackbody radiation curve for the human body (T=310 K)? What type of EM wave is this? 2897 μm/310 K = 9.35 μm which is infrared light . 5. What is the frequency of the EM wave emitted most strongly be a glowing element on a stove with temperature 1,800 K? (3*10 8 m/s) / (1609*10-9 m) = 1.864*10 14 Hz...
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