In fig. 12-67a, a uniform 40.0 kg beam is centered over two rollers. vertical lines across the beam mark off equal lengths. two of the lines are centered over the rollers; a 10.0 kg package of tamales is centered over roller b. what are the magnitudes of the forces on the beam from (a) roller a and (b) roller b? the beam is then rolled to the left until the right-hand end is centered over roller b (fig. 12-67b). what now are the magnitudes of the forces on the beam from (c) roller a and (d) roller b? next, the beam is rolled to the right. assume that it has a length of 0.800 m. (e) what horizontal distance between the package and roller b puts the beam on the verge of losing contact with roller a?
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Physics, 22.06.2019 13:00
Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ā 103 s. given that the charge of an electron is 1.6022 ā 10ā19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.
Answers: 1
Physics, 22.06.2019 18:50
An insulated thermos contains 148 g of water at 72.7 Ėc. you put in a 11.7 g ice cube at 0.00 Ėc to form a system of ice + original water. the specific heat of liquid water is 4190 j/kgā¢k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?
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Physics, 22.06.2019 22:00
Ne way in which elements differ from each other is the structure of the electron cloud in each element's atoms. in an electron cloud, an electron that is farther away from the nucleus has
Answers: 1
In fig. 12-67a, a uniform 40.0 kg beam is centered over two rollers. vertical lines across the beam...
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