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Suppose 7.31 mol of an ideal diatomic gas, with molecular rotation but not oscillation, experienced a temperature increase of 89.0 K under constant-pressure conditions. What are
(a) the energy transferred as heat Q,
(b) the change ?Eint in internal energy of the gas.
(c) the work done by the gas.
A uniform magnetic field B is perpendicular to the plane of rotation. What is the potential difference between the ends of the bar
One end of a cord is fixed and a small 0.550-kg object is attached to the other end, find the tangential and radial components of acceleration
The atmospheric pressure at sea level is about 1.0 multiplied by 105 Pa. What is the force at sea level that air exerts on the top of the typical office desk, 159cm long and 86 cm wide?
A 38.0-kg child swings in a swing supported by two chains, each 2.96 m long. The tension in each chain at the lowest point is 438 N. Find the child's speed at the lowest point
A generator rotates at 95Hz in a magnetic field of 0.025T . It has 650 turns and produces an rms voltage of 180V, What is the area of each turn of the coil
A small piece of dust of mass m = 1.2 g travels horizontally through an electric air cleaner in which the electric field is 472 N/C, What is the charge of the dust particle
A person has severe hearing loss that reduces the intensity in his inner ear by 31.5 dB. What amplification factor is needed for this person
A proton is initially at rest at a point where the potential is 459 V. Sometime later the proton is at a point where the potential is 218 V. If no force other than an electrostatic force acts on the proton, what is its final kinetic energy.
A bottle containing 5 kg of water at a temperature of 15C is placed in a refrigerator, How much heat is transfered from the water to cool it to 1C
A helicopter is ascending vertically with a speed of 5.45m/s. At a height of 141m above the Earth, a package is dropped from a window. How much time does it take for package to reach the ground.
A massless, rigid board is placed across two bathroom scales that are separated by a distance of 1.74 m. Find the weight of the person
In order to measure the radial velocity of a star (the speed of motion towards or away from us) what type of instrument would be used and how would the data be used to derive the velocity?
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