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Q. A rigid tank contains 1.80 moles of an ideal gas. Determine the number of moles of gas that should be withdrawn from the tank to lower the pressure of the gas from 27.10 atm to 5.20 atm. Assume the volume of the tank and the temperature of gas remain constant all through this operation.
A bag of blood with a density of 1050 kg/m^3 is raised about 1.00m higher than the level of a patient's arm. How much greater is blood pressure at the patient's arm than it would be if the bag were at the same height as the arm.
find speed at which the ball left the quarterback's hand.
A cube of ice is taken from the freezer at -8.4^circ C and positioned in a 114 g aluminium calorimeter filled with 322g of water at room temperature of 20.0 C. The final situation is observed to be all water at 15.0C.
A 246 kg wooden raft floats on a lake. When a 80kg man stands on the raft, it sinks 4cm deeper into the water. When he steps off, the raft vibrates for a while.
In coming to a stop, a car leaves skid marks 82m long on the highway. Assuming a deceleration of 6m/s2, estimate the speed of the car just before braking.
Two long, straight wires cross each other at right angles, and each carries same current. Which of the following statements are true regarding the total magnetic field at the various points due to the two wires.
A curve of radius 152 m is banked at an angle of 11°. An 722-kg car negotiates the curve at 86 km/h without skidding. avoid the effects of air drag and rolling friction.
A certain car battery with a 14.0 V emf has an initial charge of 195 A•h. Assuming that the potential across the terminals stays constant until the battery is completely discharged, for how long in hours can it deliver energy at the rate of 184 W.
The spheres are given the same electric charge Q and it is found that they come to equilibrium when each string is at an angle of 5 with the vertical. Each string is 30 cm long.
A bug is splattered on a car windshield. Evaluate the magnitude of the windshield's force on the bug to the magnitude of the bug's force on the windshield.
A ball of mass 0.240 grams and positive charge, q =39.3 microC, is suspended on a string of negligible mass in a uniform electric field. We observe that ball hangs at an angle of theta =15.0 o from the vertical. What is the magnitude of electric f..
A hotel elevator ascends 170 m with a maximum speed of 5.9 m/s. Its acceleration and deceleration both have the magnitude of 1.5 m/s2.
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