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Physics, 21.06.2019 22:50
Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earthâmoon (center-to-center) distance is 3.82 Ă 10^8 m, earth's radius is 6.37 Ă 10^6 m, moon's mass is 7.36 Ă 10^22 kg, and earth's mass is 5.98 Ă 10^24 kg.
Answers: 2
Physics, 22.06.2019 04:00
Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.
Answers: 2
Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 à 1013 rad/s. the mass of a nickel atom is 9.75 à 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 à 10-34 j ⢠s, , 1 ev = 1.60 à 10-19 j)
Answers: 2
Agirl stands on a sofa. identify the number of the action/reaction pairs of forces between the girl...
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