Sakalam, a light-emitting device, requires 10,068.68 ZW (Zeptowatt) of power every 500 milliseconds (ms). The energy of light being produced by Sakalam is equal to the amount of energy required to run the device at the given time. Refer to the given tables for the useful relations, necessary constants and definitions of variables, and colors corresponding to wavelengths of visible light. a. How much energy (in Joules) is equivalent to the power required by Sakalam at the given time? b. What is the wavelength of light (in nanometers, nm) being produced by Sakalam? c. What is the color of the light being produced by Sakalam?
Sakalam, a light-emitting device, requires 10,068.68 ZW (Zeptowatt) of power every 500 milliseconds (ms). The energy of light being produced by Sakalam is equal to the amount of energy required to run the device at the given time. Refer to the given tables for the useful relations, necessary constants and definitions of variables, and colors corresponding to wavelengths of visible light. a. How much energy (in Joules) is equivalent to the power required by Sakalam at the given time? b. What is the wavelength of light (in nanometers, nm) being produced by Sakalam? c. What is the color of the light being produced by Sakalam?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
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Sakalam, a light-emitting device, requires 10,068.68 ZW (Zeptowatt) of power every 500 milliseconds (ms). The energy of light being produced by Sakalam is equal to the amount of energy required to run the device at the given time. Refer to the given tables for the useful relations, necessary constants and definitions of variables, and colors corresponding to wavelengths of visible light.
a. How much energy (in Joules) is equivalent to the power required by Sakalam at the given time?
b. What is the
c. What is the color of the light being produced by Sakalam?
Transcribed Image Text:Necessary Constants and
Definitions of Variables
Useful Relations
1 W (watt) = 1 J/s
1 W = 1021 ZW
1 Hz = 1s' (per second)
1 ev = 1.6022 x 10-18 J
Energy of photon of light (in eV) = hf
c = Af
c (speed of light) = 3.00 × 10° m/s
h (Planck's constant) = 4.136 x 1015
eV/Hz
f= frequency of light
A = wavelength of light
Wavelength (nm) Color
380 - 450
450 - 500
500 - 565
565 - 590
590 - 625
625 - 700
violet
blue
green
yellow
orange
red
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