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A dilute ideal gas of atoms each of mass M at temperature τ is placed in a cetrifuge rotating with angular velocity ω. Derive an expression for the relative density of gas molecules as a function of their radial distance r from the axis of rotation.
A spaceship takes a nonstop journey to a planet and returns in 10hours according to a clock on the spaceship. If the speed of the spaceship is 0.80c, how muchtime has elapsed on the Earth?
the column of mercury in a barometer has a height of 0.760 m when the pressure is one atmosphere and the temperature is
three point charges lie along a straight line as shown in the figure below where q1 6.36 microc q2 1.46 microc and q3
A 45.4 kg girl is standing on a 144 kg plank. The plank, at first at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.60 m/s relative to the plank. Wha..
A ball is thrown at an angle of 52.5 degree above the horizontal at a speed of 8.2 m/s. What is the vertical component of the ball's velocity
In the Bohr theory of the hydrogen atom, an electron moves with constant speed in a circular orbit about a proton, where the radius of the orbit is 0.53 x 10-10 m, Determine the electrostatic force exerted by the proton on the electron
A thermodynamic system undergoes a process in which its internal energy increases by 480 J. find the energy transferred to or from it by heat
An electric motor rotating a workshop grinding wheel at a rate of 1.09 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.50 rad/s2. (a) How long does it take for the grinding wheel to stop? s (b..
A solid wood door 1.00m wide and 2.00 m high is hinged along one side and has a total mass of 44.0 kg. Find the final angular speed of the door
A string under a tension of 58.5 N is used to whirl a rock in a horizontal circle of radius 2.75 m at a speed of 20.5 m/s on a frictionless surface, What is the breaking strength, in newtons, of the string
An open-tube mercury manometer is used to measure the pressure in an oxygen tank. When the atmospheric pressure is1140mbar, what is the absolute pressure (in Pa) in the tank if the height of the mercury in the open tube is26.0cm higher than the mer..
q1. if the distance between two slits is 0.031 mm and the distance to a screen is 2.50 m find the spacing between the
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