Mechanics | Relativity Answers

(a) Explain the following;
(1) Bose-Einstein condensation.
(2) Gibbs paradox.
(b)Derive planks law of blackbody radiation using Bose-Einstein statics. Using this law ,obtain
(i) Rayleigh- Jean law & (ii) we install law.

A 50 kg box is dragged across a floor by pulling on a rope attached to the box and inclined at 30°
above the horizontal.
what minimum force magnitude is required from the rope to get the box moving?

A hydrolic press consist of a large piston with cross sector area,Ai=200cm2 and the small piston with crossectional area A2=2cm2, if a force of 200N is applied to the small piston,find the force F on the large piston

For a specific volume of 0.2 m3/kg, find the quality of steam if the absolute pressure is (a) 40 kPa and ( b ) 630 kPa. What is the temperature of each case?

For a specific volume of 0.2 m3/kg, find the quality of steam if the absolute pressure is (a) 40 kPa and ( b ) 630 kPa. What is the temperature of each case

A stretched string of mass 20 g vibrates with a frequency of 30 Hz in its fundamental
mode and the supports are 40 cm apart. The amplitude of vibrations at the antinode is
4 cm. Calculate the velocity of propagation of the wave in the string as well as the
tension in it.

consider two cylindrical pipes of equal length.one of these acts as a closed organ pipeand the other as open organ pipe.the frequency of the third harmonic in the closed pipe is 200hz higher than the harmonic of the open pipe.calculate the fundamental frequency of the closed pipe.

The linear density of a vibrating string is 1.3*10^-4kb/m.a tranverse wave is propagating on the string and is described by the equation y(x,t)=0.021sin(30t-x) where x and y are in metres and t is in seconds

the oscillations of two points x1 and x2 at x=0 and x=1m respectively are modelled as follows:y1=(0.3sin4 pie t) and y2=0.3sin(4 pie t+pie/8).calculate the wavelength and speed of the associated wave.

In an arcode video game a spot is programmed to move across the screen to x=9.00t-0.750t^3, where x is the distance in cm and t is the time in seconds. when the spot reaches a screen edge, at either x=0 or x=15.0cm. t is reset to 0 and spot start moving again according to x(t)
a) at what time after starting is the spot instantaneously at rest.
b) where does it occur
c) what is its acceleration when it occurs
d)in what direction is it moving just prior to coming to rest.
dii)just after
e) when does it first reach an edge of the screen after t=0.