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a hydrogen atom has a radius of about 005 nm a estimate the uncertainty in any component of the momentum of an electron
two containers contain the same gas at different temperatures and pressures as indicated in the figure the small
40kg of water at 30 c is mixed with 40 kg of water at 47 c in a well-insulated container estimate the net change in
a 120 g insulated aluminum cup at 17 c is filled with 140 g of water at 40 c after a few minutes equilibrium is reached
a refrigerator moves energy from a cold reservoir the inside of the refrigerator to a hot reservoir the kitchen but
suppose a heat engine has an efficiency of 0201 and produces 109times104 j of work how much energy is pulled in from
suppose a heat engine pulls 337times104 j of work from the hot reservoir and 752times103 j of that energy is used to
a styrofoam box has a surface area of 074 m2 and a wall thickness of 20 cm the temperature of the inner surface is
in a physics lab experiment a student immersed 205 one-cent coins each having a mass of 300g in boiling water after
a clock has an aluminum pendulum with a period of 1000 s at 207 degc suppose the clock is moved to a location where the
a pulley of radius 20cm and moment of inertia is suspended from a ceiling and has a long string of negligible mass
a 40-g block of ice is cooled to 72degc and is then added to 640 g of water in an 80-g copper calorimeter at a
a 500-g lead bullet traveling at 300 ms is stopped by a large tree if half the kinetic energy of the bullet is
one mole of oxygen gas is at a pressure of 540 atm and a temperature of 290degc a if the gas is heated at constant
a 108-g cube of ice at 0degc is dropped into 10 kg of water that was originally at 76degc what is the final temperature
jack was exposed to fast neutrons he received a radiation dose of 160 rem on part of his hand affecting 270 grams of
a 70 kg human body typically contains 140 g of potassium potassium has a chemical atomic mass of 391 u and has three
ground beef may be irradiated with high-energy electrons from a linear accelerator to kill pathogens in a standard
you work in a materials testing lab and your boss tells you to increase the temperature of a sample by 466 c the only
a spring oscillator is designed with a mass of 0144 kg it operates while immersed in a damping fluid selected so that
in a physics lab experiment for the determination of moment of inertia a team weighs an object and finds a mass of 298
a satellite is placed into an earth orbit and passes 100miles above the ground as its closest point while moving at
a pressurized cylindrical tank 50 in diameter contains water which emerges from the pipe at point c with a velocity of
describe one model for the origin of the milky way galaxy how does this model explain the differences between
a pressurized cylindrical tank 50 rm m in diameter contains water which emerges from the pipe at point c with a