Afixed, single pulley that is used to lift a block does which one of the following? . a.. doubles the force required to lift the block. b.. decreases the force required to lift the block. c.. makes the block easier to lift by changing the direction of the force needed to lift it. d.. decreases the force required and changes the direction of the force required.
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Air flows upward in the wick of a lantern because of the liquid property called
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Two polarizers are oriented at 40β to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?
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Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70βc. calculate the work (in kj) done during this process.
Answers: 3
Afixed, single pulley that is used to lift a block does which one of the following? . a.. doubles th...
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