Solid State Physics Answers

Silver has FCC structure and its atomic radius is 1.414 amstrong. Find the volume of the unit cell?

Using the expression of Bose-Einstein distribution function for photons
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derive Plancks Law and show that (i) Rayleigh-Jeans Law, and (ii) Wien’s Law
follow from it at low & high frequencies

"A spanner was used to undo a nut. A force of 20 newtons was applied at a distance of 20 centimeters from the nut.calculate the moment of the force being used to undo the nut?"

three solid objects are floating in a liquid, as in the drawing. they have different weights and volumes, but have the same thickness ( the dimension perpendicular to the page ). rank the objects according to their density, largest first. b) which principle of physics regarding fluid pressure explains your answer? explain.

image from custom entry tool

Two trucks are travelling along a straight line with the leading truck travelling at 20 km/hr and the following truck travelling at 30 km/hr.
If the leading truck has a mass of 10 tonnes and the velocity of the two trucks after Impact is 26 km/hr find the mass of the second truck.

A Ferris wheel of radius 6 m rotates once in
26 s.
What is its angular velocity?
Answer in units of rad/s.

A morning fog generally vanishes before noon.Explain its answer with mathematical calculation. If it has calculation.

Drawing stress versus strain curves explain the difference between ductile and brittle materials.
Give one example of each

The young's modulus for steal is 2*10^11 N/M^2. If the inter atomic spacing for the metal is 2.8 angstrom. Find the increase in the inter atomic spacing for a force of 10^9 N/M^2,and the force constant?

One planet is 6.00 x10^5 m. Another planet is 1.4 x 10^27kg. The radius is 7.14 x 10^7. Find the period.