GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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120 pounds of force
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360 foot-pounds
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40 foot-pounds
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None of the above
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Detailed explanation-1: -How much work input is required to lower (not drop) a 120-pound weight from the top of a 3-foot table to the floor? *360 foot-pounds. Work is the product of the amount of force applied to an object times the distance through which the force causes the object to move.
Detailed explanation-2: -We must exert a force of 40 pounds to roll a 120-pound barrel up the 9-foot inclined plane to lift it 3 feet. Dihedral or the upward slant of the wing from the fuselage is used to increase the lateral stability. Lateral stability is roll stability and is stability about the longitudinal axis.
Detailed explanation-3: -Designed as small airfoils, winglets reduce the aerodynamic drag associated with vortices that develop at the wingtips as the airplane moves through the air. By reducing wingtip drag, fuel consumption goes down and range is extended.
Detailed explanation-4: -rate of flow will be greatest where the pressure is greatest (between metered and unmetered) C. where unmetered is 17 PSI and metered is 5 PSI. Volume and pressure are inversely proportional.
Detailed explanation-5: -The amount of water vapor in the air is called absolute humidity. The amount of water vapor in the air as compared with the amount of water that the air could hold is called relative humidity.