1. Gamma-ray bursters are objects in the universe that emit pulses of
Physics, 16.04.2020 06:42, kortlen4808
Electromagnetic Waves
1. Gamma-ray bursters are objects in the universe that emit pulses of
gamma rays with high energies. The frequency of the most energetic
bursts has been measured at around 3.0 x 10- Hz. What is the wave-
length of these gamma rays?
2. What is the wavelength range for the FM radio band (88 MHz-108 MHz)?
3. Shortwave radio is broadcast between 3.50 and 29.7 MHz. To what range
of wavelengths does this correspond? Why do you suppose this part of
the spectrum is called shortwave radio?
What is the frequency of an electromagnetic wave if it has a wavelength
of 10 km?
5. The portion of the visible spectrum that appears brightest to the human
eve is around 560 nm in wavelength, which corresponds to yellow-green.
What is the frequency of 560 nm light?
6. What is the frequency of highly energetic ultraviolet radiation that has a
wavelength of 125 nm?
Answers: 3
Physics, 21.06.2019 23:20, shirlsmith72
From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a. m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?
Answers: 1
Physics, 22.06.2019 04:00, alexialoredo625
When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative
Answers: 2
Physics, 22.06.2019 08:30, khambay
Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.
Answers: 3
Electromagnetic Waves
1. Gamma-ray bursters are objects in the universe that emit pulses of
1. Gamma-ray bursters are objects in the universe that emit pulses of
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