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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 transverse harmonic wave travels on a rope according to the following expression: y(x,t) = 0.17sin(2.0x + 17.5t), What is the average speed of the rope during one complete oscillation of the rope
Consider a system composed of a mixture of 2.50kg of ice and 50 gr of liquid water and a small separate container of finely powdered salt. This physical system is contained in a fully insulated container that prevent.
At what height above the earth is the acceleration due to gravity 45% of its value at the surface, What is the speed of a satellite orbiting at that height
An RC circuit is connected across a DC voltage source through an open switch. The switch is closed at t = 0 s. Which of the following is a correct statement regarding the circuit
A roach that runs for its life because you try to hit it with your physics book runs off the horizontal tabletop with a speed of 0.685 m/s, What will be the vertical component of the roach's velocity just before it hits the floor
A block with mass m = 4.6 kg is attached to two springs with spring constants kleft = 37 N/m and kright = 51 N/m. What is the effective spring constant of the two springs
You see the boy next door trying to push a crate down the sidewalk. He can barely keep it moving, and his feet occasionally slip. Estimate the mass of the crate
a small electric immersion heater is used to heat 100 g of water for a cup of herbal tea. the heater is labeled 200
A baseball pitcher can throw a ball with a speed of 40. He is in the back of a pickup truck that is driving away from you. He throws the ball in your direction, and it floats toward you at a lazy 30. What is the speed of truck.
A uniformly charged sphere has a potential on its surface of 450 V. What is the radius of the sphere
A 1.60-mol sample of helium gas initially at 300 K, and 0.400 atm is compressed isothermally to 1.60 atm. Note that the helium behaves as an ideal gas. Find the final volume of the gas.
A fly wheel turns through 30 rev(1 rev=2pie rad) as its slows from an angular speed of 6 rad/s to a stop. Assuming a constant angular acceleration, find the time for it to come to rest
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