OBLEM 3. The Lady-Godiva sphere is made of uranium that is 90% enriched in U-235. The density of this fuel is 18.75 g/cm3 . a) Calculate neutron reproduction factor for this uranium composition. b) Determine infinite neutron multiplication factor of the assembly. c) What is the diffusion length of fast neutrons in this fuel

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

The two required components for a generator are

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?