Physics, 19.09.2019 15:30 GalaxyWolf1895
Use the pythagorean theorem to answer this question. a paper airplane is thrown westward at a rate of 6 m/s. the wind is blowing at 8 m/s toward the north. what is the actual velocity of the airplane?
2 m/s, northwest
10 m/s, northwest
14 m/s, northwest
48 m/s, northwest
Answers: 2
Physics, 22.06.2019 15:30
What is the increase in density of a medium due to wave travel?
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Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.
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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
Use the pythagorean theorem to answer this question. a paper airplane is thrown westward at a rate o...
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