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Calculate the fast neutron flux needed to produce the same injury as 0.50 mSv/hr of thermal neutrons, and then, as 6,000 thermal neutrons per sq. cm per sec. Please show your work.
A small airplane flies with a speed relative to the ground (ground speed) of 212.0 km/h in a direction 19.0 degrees to the east of north. what is the speed of the wind
A parallel-plate capacitor has a capacitance of 19.0 µF. What charge on each plate would produce a voltage of 36.0 V between the plates? What is the voltage between the plates?
A boy drops a stone vertically down from the margin of a 24-m cliff. After how many seconds will the two stones pass each other
A U.S. penny has a diameter of 1.9000cm at 20.0 C . The coin is made of a metal alloy (mostly zinc) for which the coefficient of linear expansion is 2.6e-5 K^-1. What would its diameter be on a hot day in Death Valley
It has been suggested that rotating cylinders about 8.0 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acce..
An object is located 13.0 cm in front of a convex mirror, the image being 7.00 cm behind the mirror. How far in front of the mirror is the second object located
Consider a Hydrogen atom with the electron in the n = 8 shell. What is the energy of this system, How many subshells are in this shell
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.875 rad/s. You, with a mass of 72.3 kg, Calculate the total angular momentum of the system.
two 28.0 kg ice sleds that are placed a short distance apart, one directly behind the other. What are the final speeds of the two sleds
A circular platform of radius Rp = 5.95 m and mass Mp = 359 kg rotates on frictionless air bearings about its vertical axis at 6.99 rpm. What is the angular velocity when the man reaches the edge of the platform
Crew members attempt to escape from a damaged submarine 200 m below the surface. What force must they apply to a pop-out hatch, which is 1.2 m by 0.70 m, to push it out at that depth? Assume that the density of the ocean water is 1025 kg/m3.
When you take a bath, how many kilograms of hot water (51 °C) must you mix with cold water (14°C) so that the temperature of the bath is 36 °C? The total mass of water (hot plus cold) is 192kg. Avoid any heat flow between the water and its externa..
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