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A 2kg piece of copper at 200o C is taken out of a furnace and is allowed to cool in air with an ambient temperature of 25o C. Calculate the entropy change in the universe as a result of this process. The Cp of copper is 0.38 kJ/kg K.
how to count the power
Q. Define critical temperature. The temperature at that electrical resistivity of the material suddenly drops to zero and the material changes from normal conductor to a super
A cylinder having 1.00 g of water at the boiling point is heated until all the water turns into steam. The expanding steam pushes a piston 0.365 m. There is a 215-N frictio
Each physical system has related with it a certain point whose motion characterizes the motion of the whole system. When the system goes under some external forces than this point
Mediocrity principle: The principle that there is nothing specifically interesting regarding our place in space or time, or about ourselves. This principle possibly first made
A thin isotropic metal plate is subjected to the plane stress state shown (properties of the metal are: E = 10x10 6 psi and ν = 0.250). A uniaxial strain gage is mounted on the pl
A rectangular surface (0.14 m x 0.39 m) is oriented in a uniform electric field of 440 N/C. What is the maximum possible electric flux through the surface?
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Stern-Gerlach experiment (O. Stern, W. Gerlach; 1922): An experiment which demonstrates the features of spin (intrinsic angular momentum) as a different entity in spite of orb
A particle has initial velocity 5 m/s due east and acceleration 2 m/s^2 due west. Find the distance traveled during 3rd second of the motion.
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