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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 2.40 kg ball is attached to an unknown spring and allowed to oscillate. When does the maximum of acceleration occur
A small ball is attached to one end of a spring that has an unstrained length of 0.152 m. By how much would the spring stretch if it were attached to the ceiling and the ball allowed to hang straight down, motionless
The electric field of a sinusoidal electromagnetic wave obeys the equation E=(375V/m)cos[(1.99×107rad/m)x+(5.97×1015rad/s)t]. What is the amplitude of the magnetic field of this wave
Inside an insulated container, a 250-g ice cube at 0 °C is added to 200 g of water at 18 °C. What is the remaining ice mass
A container of hot water at 80 degrees cools to 79 degrees in 15 seconds while it is placed in a room that is t 20 degrees. Use newton's law of cooling to estimate the time it will take for the container to cool from 50 degrees to 49 degrees.
Determine the magnitude of the emf EMF induced in the loop after exactly time 6.00 s has passed since the circumference of the loop started to reduce.
A 143 O lamp, a 29 O electric heater, and a O 53 fan are connected in parallel across a 135 V line. What power is expended in the heater
at the local county fair, you watch as a blacksmith drops a 0.50kg iron horseshoe into a bucket containing 25kg of water. what is the equilibrium temp of the system
A uniformly charged infinite sheet with a surface charge density +? lies flat in the x-y plane. What is the potential difference DV between the two points
An electron and a proton are each accelerated through a potential dierence of 10.0 MV. Are the particles moving at relativistic speeds
The magnetic field inside an air filled solenoid 36cm long and 2cm in diameter is 0.8T. Approximately how much energy is stored in this field
Calculate the total amount of energy that flows into the space between the capacitor plates from to , by first integrating the Pointing vector over the surface that connects the edges of the two circular plates, and then integrating over time.
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