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A 90.6-kg fullback running east with a speed of 5.04 m/s is tackled by a 94.1-kg opponent running north with a speed of 2.96 m/s. (a) Explain why the successful tackle constitutes a perfectly inelastic collision. (b) Calculate the velocity of the players immediately after the tackle. (c) Determine the mechanical energy that disappears as a result of the collision. Account for the missing energy.
A container holds 2.9 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 8.1x10-3 kg bullet with a speed of 750 m/s
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. calculate the change in entropy of the boiling water
It takes a student t = 7.6 s to push a block m = 11 kg at a constant velocity over a distance of d = 8.2 m. Write an expression for the energy required to move the block along this path in terms of the variables provided
A rope can withstand 1.0 x 10^3 N of tension. If the rope is being used to pull a 10.0-kg package across a c=frictionless surface, what is the greatest acceleration that will not break the rope
The energy gap in silicon is 1.1eV. The average electron effective mass is 0.31m, where m is free electron mass. Calculate the electron concentration in the conduction band of silicon at T=300K
A dime is placed in front of a concave mirror that has a radius of curvature R = 0.15 m. Determine the distance between the dime and the mirror
Eight 6.5 -W Christmas tree lights are connected in series to each other and to a 120 -V source. What is the resistance of each bulb
A particle of mass 0.350 kg is attached to the 100-cm mark of a meterstick of mass 0.125 kg. Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 50.0-cm mark
From colonial times through the 1960s, the primary mode of mental illness treatment was institutional. What factors were responsible for this shift
An electromagnetic plane wave at a certain location has an electric field pointed up which is given as a function of time as E = 54 V/m × sin (6x106 Hz × t). How much momentum is absorbed by the foil for the same time interval
A cylindrical air tank has dimensions diameter = 0.2m and height 0.8m, Calculate the mass of air in the tank (kg) (have to use ideal gas law, molecular weight of air)
Some bacteria are propelled by biological motors that spin hair-like flagella. How long does it take the motor to make one revolution
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