Physics, 07.10.2021 01:40, jmathematics7806
you lift a large bag of flour from the floor to a 1-meter-high counter, doing 100 joules of wok in 2 seconds. How much power do you use to lift the bag of flour
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How is the gravitational force related to the distance between two objects?
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Physics, 22.06.2019 18:00, kaylaamberd
Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7
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Ajoint produces movement when its angle decreases. which type of movement is it?
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Physics, 22.06.2019 22:00, jerry7792
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
you lift a large bag of flour from the floor to a 1-meter-high counter, doing 100 joules of wok in 2...
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