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A spherical reactor composed of 235U metal is operating in a critical steady state. Discuss what probably happens to the multiplication of the reactor and why, if the system is modified in the following ways:
1. The reactor is rapidly compressed to one-half its original volume.
2. A large, fat reactor operator accidentally sits on the reactor, squashing it into an ellipsoidal shape.
3. A thick sheet of cadmium is wrapped around the outside of the reactor.
4. The reactor is suddenly immersed in a large container of water.
5. A source of neutrons in placed near the reactor.
6. Another identical reactor is placed a short distance away from the original reactor.
7. One simply leaves the reactor alone for a period of time.
An engine takes in 8000 cal of heat and exhausts 4000 cal of heat each minute it is running. How much work does the engine perform each minute
In a fast-pitch softball game the pitcher is impressive to watch, Determine the angle of the total acceleration relative to the radial direction
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A 170? resistor, a 9.00×10?2?F capacitor, and a 350mH inductor are connected in series to a voltage source with amplitude 240V, What is the resonance angular frequency
A ball is thrown upward from the edge of a building that is 100mt all. On its way back down, the ball just misses the building, falling to the ground below. The elapsed time between the throw andthe ball hitting the ground is 6.5 sec.
Newton standing next to the leftmost blade, pulls the lever at the moment that Einstein's foot just passes the leftmost blade, thinking that this will position the right blade in the center of Einstein and will cut him in two.
The left ventricle of the heart accelerates blood from rest to a velocity of + 20.3 cm/s. How much time does blood take to reach its final velocity
An unbanked circular highway curve on level ground makes aturn of 90 degrees. What is the minimum length of the curve in miles
An ideal gas has a pressure of 1.0 atm, a volume of 25.0 L at a temperature of 30 deg C. How many molecules are there in the gas
How long do the sound waves take to reach the other end? Assume the density of aluminum is 2700kg/m3.
A 65.0 kg basketball player jumps vertically and leaves the floor with a velocity of 1.80 m/s upward. What impulse does the player experience
What is the spatial coordinate of the collision according to an observer in frame S'?
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