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A 15% enriched 235U-Graphite moderated reactor has been operating at equilibrium for some time. The average neutron flux is 2x10^14 neutrons/cm^2sec and the moderator fuel ratio is 250 moles per graphite per mole U. Determine the reactivity change due to xenon and samarium. The mean core temp is 500C.
The biggest problem I'm having is figuring out sigma-au and sigma-fu for the thermal utilization factor. Also the correction factor (k_eff).
At one instant a bicyclist is 28.0 m due east of a park's flagpole, going due south with a speed of 11.0 m/s. Then 24.0 s later, the cyclist is 26.0 m due north of the flagpole, going due east with a speed of 11.0 m/s. For the cyclist in this 24.0 s ..
What inductance must be connected to a 25 pF capacitor in the oscillator capable of generating 480 nm (i.e., visible) electromagnetic waves.
A model airplane with mass 0.740 kg is tethered to the ground by a wire so that it flies in a horizontal circle 30.2 m in radius. Find the magnitude of the angular acceleration of the airplane
In an elementary-particle experiment, a particle of mass m is red, with momentum mc, at a target particle of mass 2squrt (2m) . The two particles form a single new particle (completely inelastic collision).
A dynamite blast at a quarry launches a rock straight upward, and 2s later it is rising at a rate of 15m/s. assume air resistance has no effect on the rock, analyse its speed (a) at launch and (b) 5s after launch.
a block hangs from a string from the outside rood of a van. when the van rounds a corner of radius equal to 150cm at a
A pulse from a ruby laser (lambda = 694.3 nm) has an average power of 20 MW and lasts 2.3 ns. What is the total energy of the pulse
Logan is given an initial speed of 4.00 m/s from the top of a 20 degree incline. when he reaches the bottom of the incline
A large block 19.0 cm wide, 20.0 cm long, and 24.00 cm high of mass 4.55 kg. This block is passing through air (density ?air = 1.43 kg/m3). Calculate the terminal velocity of the block
A jet flying at 104 m/s banks to make a horizontal turn of radius 4000 m. The mass of the jet is 1.5 x 105. Calculate the magnitude of the necessary lift force
A golf ball (m=.05 kg) and a cannonball (M=100 kg) collide head on. Before the collision, the two balls had equal speeds of 30 m/s and opposite directions. After the collision, the speed of the golf ball is approximately
A 60-kg student traveling in a car with a constant velocity has a kinetic energy of 1.2 X 104 J. What is the speedometer reading of the car
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