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When a nucleus captures a slow neutron itmust bring the neutron to a stop within the diameter of the nucleusby means of the strong force. Suppose a stray neutron has the speedof 1400 km/s and is barely captured by a nucleus with a diameterd=1.0X10^(-14) m. Assuming that the strong force on the neutron iis approximately constant, find its magnitude.
By curving different isotopes through paths with different radii, a mass spectrometer can be used to purify a sample of mixed uranium-235 and uranium-238 isotopes. Assume that B = 5.00*10^-3 T, V = 55.0 V, and that each uranium isotope has a 5+ io..
A gunner wants to fire at a target at a horizontal distance of 12500 m from his position. If his gun fires with a muzzle speed of 700 m/s and if g = 9.81 m/s^2, what is the correct elevation angle
A sample contains 8.30×104 radioactive nuclei. In a time of 5 minutes, Evaluate the half life of the sample
A man is pushing a heavy box across the floor. The box weighs 95 lbs. The man is pushing forward on it with a force of 56 lbs. What is the resultant horizontal force on the box
A gardener pushes a 20kg lawnmower whose handle is tilted up 37degrees above horizontal. The lawnmower's coefficient of rolling friction is 0.20. How much power does the gardener have to supply to push the lawnmower at a constant speed of 1.4m/s ? As..
A spring whose stiffness is 1000 N/m has a relaxed length of 0.49 m. what is the change in the potential energy of the spring
a patient is going to be prescribed bifocals which will be 2.00 cm from the eye. the prescribed powers in diopters for
A 0.250-kg piece of aluminum that has a temperature of -158 °C is added to 1.4 kg of water that has a temperature of 2.6 °C. find the mass of water that has been frozen into ice
A slab of copper of thickness b = 2.273 mm is thrust into a parallel-plate capacitor of C = 1.00×10-11 F of gap d = 10.0 mm, What is the capacitance after the slab is introduced
two train whistles a and b each have a frequency of 392 hz. a is stationary and b is moving toward the right away rom a
A car moving at 8 m/s crashes into a barrier and stops in 0.050 s. There is a 17-kg child in the car. What is the impulse needed to stop the child
A chair of weight 70 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 37.0 directed at the angle of 42 below the horizontal and the chair slides along the floor.
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