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a heat engine operates in a carnot cycle between 830degc and 353degc it absorbs 21004 j of energy per cycle from the
a bowler throws a bowling ball of radius r 11 cm along a lane the ball the figure slides on the lane with initial
a series rlc circuit has r18kohm c14microf and l02ha at what frequency is its impedance lowestb what is the value of
a 325 kg crate is lowered to the ground by a helicopter its fastened to the end of the vertical cable which has a
a particular engine has a power output of 600 kw and an efficiency of 220 assume the engine expels 6500 j of energy in
a heat engine operates between a reservoir at 28degc and one at 354degc what is the maximum efficiency possible for
jupiter has a radius of 71492km and a mass of 19x1027kg what is the acceleration due to gravity at jupiters
a 10-kg mass is attached to a string wrapped around a shaft of negligible mass and having a 80-cm radius a
a person wears a hearing aid that uniformly increases the sound level of all audible frequencies of sound by 276 db the
the deuterium nucleus starts out with a kinetic energy of 171e-13 joules and the proton starts out with a kinetic
a child is on a swing whose 40 m long chains make a maximum angle of 49 degrees with the vertical what is the childs
a diving board of length 300 is supported at a point 100 from the end and a diver weighing 530 stands at the free end
as a highway engineer youre asked to design a runaway truck lane on a mountain road the lane will head uphill at 37
how large an inductance in henrys h should be connected in series with a 120 v 60 w lightbulb if it is to operate
a simple pendulum with a length of 243 m and a mass of 684 kg is given an initial speed of 176 ms at its equilibrium
a 906-kg fullback running east with a speed of 504 ms is tackled by a 941-kg opponent running north with a speed of 296
two blocks are free to slide along the frictionless wooden track shown below the block of mass m1 506 kg is released
two people carry a heavy electric motor by placing it on a light board 260 m long one person lifts at one end with a
a 1 2550 kg car traveling initially with a speed of 25000 ms in an easterly direction crashes into the back of a 9 4000
a microscope has an objective lens with a focal length of 120 mm a small object is placed 08 mm beyond the focal point
a 456-kg girl is standing on a 155-kg plank both originally at rest on a frozen lake that constitutes a frictionless
a square loop of wire with initial side length 10 cm is placed in a magnetic field of strength 05 t the field is
a baseball approaches home plate at a speed of 480 ms moving horizontally just before being hit by a bat the batter
a carousel at the local carnival rotates once every 499 seconds what is the linear speed of an outer horse on the
an inclined plane of angle 200deg has a spring of force constant k 495 nm fastened securely at the bottom so that