Air enters a compressor operating at steady state at 15.4 lbf/in.2 , 80◦f with a volumetric flow rate of 424 ft3 /min and exits at 176.4 lbf/in.2 , 260◦f. heat transfer occurs at a rate of 6800 btu/h from the compressor to its surroundings. assuming the ideal gas model for air and neglecting kinetic and potential energy effects, determine the power input, in hp.
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Physics, 21.06.2019 20:50
What is the type of the reaction below? bacl2 + h2so4 → 2 hci + baso4 double replacement synthesis single replacement decomposition
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As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.
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Physics, 22.06.2019 16:30
Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?
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Physics, 22.06.2019 17:50
If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around
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Air enters a compressor operating at steady state at 15.4 lbf/in.2 , 80◦f with a volumetric flow rat...
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