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In the nuclear-fission reaction, neutrons are emitted, usually some number of neutrons between 0 and 5. The process is thought to be random.First calculate the total number of fissions observed. Then calculate the average number of neutrons per fission. Calculate the probability that a nucleus emitsk = 0, 1, 2… fissions.
A projectile is fired horizontally from a gun that is 88-m above flat ground, emerging from the gun with a speed of 250m/s.
A 140g arrow is shot vertically from a bow whose effective spring constant is 500 N/m .If the bow is drawn 60cm before shooting the arrow, to what height does the arrow rise
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. Determine the induced emf within a circle of tissue of radius 1.2 mm
Two objects A and B start at the same place and move on a straight line in the same direction. what is the distance between the two objects after 3 seconds
How high a tree would a 79.0 kg person have to climb to increase his gravitational potential energy relative to the ground by that amount.
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 2.6x10^-5 K^-1. What would its diameter be on a hot day in Death Valley
A typical red blood cell subtends an angle of only 1.8×10^-5 rad when viewed at a person's near-point distance of 25 cm. find the magnitude of the angle subtended by the red blood cell
How much power is needed to push a 85kg chest at 0.72m/s along a horizontal floor where the coefficient of friction is 0.76
A uniform electric field has a magnitude 330 N/C and is directed along the +y-axis. what is the change in potential energy for this charge
In extremely cold weather conditions where the inside thermostat is set to 27 C and the outside temperature is -20 C, your 1200 square ft house might lose heat through the walls at a rate of 4000 W.
A speedboat starts from rest and accelerates at +2.42 m/s2 for 8.71 s. At the end of this time, the boat continues for an additional 4.33 s with an acceleration of +0.654 m/s2. Find the total displacement of the boat
A mass of 0.5 kg is attached to a massless spring with a spring constnt of k = 600 N/m. What was the incident speed of the second mass
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