Physics, 23.10.2019 02:00 pchisholm100
Auniform drawbridge must be held at a 37 ? angle above the horizontal to allow ships to pass underneath. the drawbridge weighs 45,000 n and is 14.0 m long. a cable is connected 3.5 m from the hinge where the bridge pivots (measured along the bridge) and pulls horizontally on the bridge to hold it in place.
what is the tension in the cable?
find the magnitude of the force the hinge exerts on the bridge.
find the direction of the force the hinge exerts on the bridge.
if the cable suddenly breaks, what is the magnitude of the angular acceleration of the drawbridge just after the cable breaks?
what is the angular speed of the drawbridge as it becomes horizontal?
Answers: 3
Physics, 21.06.2019 23:30
The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)
Answers: 3
Physics, 22.06.2019 01:00
Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?
Answers: 1
Physics, 22.06.2019 06:30
2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.
Answers: 2
Physics, 22.06.2019 08:00
Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d
Answers: 1
Auniform drawbridge must be held at a 37 ? angle above the horizontal to allow ships to pass undern...
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