1. an electromagnetic wave in a vacuum has a wavelength of 0.07 m. what is its frequency? (1 point)
f = 3.0 • 108 m/s
f = 4.3 • 109 hz
f = 3.0 • 109 hz
f = 4.3 • 108 m/s
2. which of the following occurs as light travels farther from its source? (1 point)
far from the source, photons come together in a small area.
the intensity of light increases as photons move away from the source.
the source gives off less light as photons move away from it.
far from the source, photons spread over a larger area.
3. infrared rays have a shorter wavelength than (1 point)
ultraviolet rays.
x-rays.
radar waves.
gamma rays.
4. in order of increasing light-transmitting capabilities of materials, which is the correct sequence? (1 point)
5. which of the following occurs as a light wave bends when it passes from one medium into another? (1 point)
constructive interference
refraction
destructive interference
reflection
Answers: 3
Physics, 22.06.2019 00:40, camco301
Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ
Answers: 3
Physics, 22.06.2019 01:20, destinybowers18
Acar moves a distance of 50.0 km west, followed by a distance of 64.9 km north what was the magnitude of the displacement of the car, in units of kilometers?
Answers: 2
1. an electromagnetic wave in a vacuum has a wavelength of 0.07 m. what is its frequency? (1 point)...
English, 25.09.2020 08:01
Engineering, 25.09.2020 08:01
Mathematics, 25.09.2020 08:01
History, 25.09.2020 08:01
Mathematics, 25.09.2020 08:01
Mathematics, 25.09.2020 08:01
Mathematics, 25.09.2020 08:01