Physics, 30.03.2021 02:40 thesusan56351
Two swimmersAandB, of weight 190 [lb] and 125 [lb], respectively, are at diagonally oppositecorners of a floating raft when they realize that the raft has broken away from its anchor. SwimmerAimmediately starts walking towardBat a speed of 2 [ft/s] relative to the raft. Knowing that the raftweighs 300 [lb], determine (a) the speed of the raft ifBdoes not move, (b) the speed with whichBmust walk towardAif the raft is not to move.
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The human body stores chemical energy from digested food. some of the chemical energy is converted into mechanical energy when the body moves. which statement best supported by this information
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(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present
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Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?
Answers: 3
Two swimmersAandB, of weight 190 [lb] and 125 [lb], respectively, are at diagonally oppositecorners...
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