Physics, 20.08.2020 20:01 superjoshuanucl
an electromagnetic wave has an electric field with peak value 120. What is the averge energy delievered to a surface
Answers: 2
Physics, 22.06.2019 11:30
Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25Ë e? this would have obliterated the city.
Answers: 1
Physics, 22.06.2019 22:00
1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light
Answers: 3
Physics, 23.06.2019 02:00
The gravitational force between pluto and charon is 3.61 Ă 1018 n. pluto has a mass of 1.3 Ă 1022 kg, which is only slightly greater than charonâs mass of 1.6 Ă 1021 kg. how far apart are pluto and charon? 2.0 Ă 107 m 2.4 Ă 1012 m 3.8 Ă 1014 m 5.8 Ă 1024 m
Answers: 1
an electromagnetic wave has an electric field with peak value 120. What is the averge energy delieve...
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