Physics, 17.12.2021 01:00 Michaelyork1495
Jezeli w silniku podczas spalania 3 l benzyny wydziela sie 115 MJ energii, i tylko 2,3x10do 4 kJ zamienia sie na mechaniczna , to jego wydajnosc wynosi?
Answers: 2
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Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?
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With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90
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Select the best definition for wavelength. the height of an oscillating electromagnetic wave the rate at which electromagnetic waves oscillate. the distance between two crests of an electromagnetic wave. the oscillations of electric and magnetic fields select the best definition for frequency. the oscillations of electric and magnetic fields. the height of an oscillating electromagnetic wave. the distance between two crests of an electromagnetic wave. the rate at which electromagnetic waves oscillate
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Jezeli w silniku podczas spalania 3 l benzyny wydziela sie 115 MJ energii, i tylko 2,3x10do 4 kJ zam...
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