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Consider the neutrino to be a massless spin-1/2 fermion. How many different orientations of its intrinsic spin angular momentum can a neutrino have? How about a photon, with spin 1? How about a massive vector boson with spin 1?
The block is a cube that is 300mm on each side. Assume the block is incredibly tall. At steady state, what is the velocity of the block?
a stone of mass m is tied to one end of a string ans is rotated with constant angular vel. w. the length of the string
The room-temperature electrical conductivity of a semiconductor specimen is 25 (ohm-m)-1. The whole concentration is known to be 2.5E+19 m-3. The electron and hole mobilities for this material are 0.38 and 0.18 m2/V·s, respectively. Compute the elect..
in an effort to increase thrust it is decided that an aft-fan should be added to this engine. the aft-fan creates a
1 initially an insulated rigid tank contains 3.86 kg of water at 265oc and 1 mpa. a heater in the wall of the tank
A Carnot power cycle operates at steady state with water as the working fluid. The boiler pressure is 200lbf/in^2, with saturated liquid entering and saturated vapor exiting. The condenser pressure is 20lbf/in^2.
a satellite is in a circular orbit 250 mi above the surface of the earth. determine the new perigee and apogee
the true stress-strain curve of a material obeys the power-hardening law with n 0.18. a piece of this material was
steam enters the first turbine stage of a rankine power plant with reheat and regeneration at 1800 psi 1000 f and
a fan at a rock concert is 27 m from the stage where the sound intensity level is 130 db. her eardrums have a diameter
Determine the mass flow rate through the nozzle for a nozzle throat area of 50 cm2when the back pressure is (a) 0.7 MPa and (b) 0.4 MPa.
In a cold winter day, wind blows over the wall of a house at 40 km/h. The outside air temperature is reported to be -7°C. The wall is 8 m long and 5 m height whose surface temperature is 10 °C.
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