A100 w incandescent lightbulb emits about 5 w of visible light. (the other 95 w are emitted as infrared radiation or lost as heat to the surroundings.) the average wavelength of the visible light is about 600 nm, so make the simplifying assumption that all the light has this wavelength. how many visible-light photons does the bulb emit per second?
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Physics, 22.06.2019 12:00
You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?
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Physics, 22.06.2019 17:40
The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.
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Physics, 22.06.2019 18:30
Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm
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A100 w incandescent lightbulb emits about 5 w of visible light. (the other 95 w are emitted as infra...
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