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a combination lock has a 15 -diameter knob that is part of the dial you turn to unlock the lock to turn that knob you
the two angled ropes used to support the crate in the figure below an withstand a maximum tension of 1600 before they
a bouncy ball of mass 81 g is thrown straight into a wall at the speed of 23 ms the collision is completely elastic and
a tennis ball has a velocity of 22 ms and a mass of 587 g after the ball hits a tennis racket the velocity becomes
a 294 n force is pulling an 826-kg refrigerator across a horizontal surface the force acts at an angle of 244 deg above
in a compton scattering experiment an x-ray photon scatters through an angle of 210deg from a free electron that is
a satellite is in a circular orbit around an unknown planet the satellite has a speed of 155 104 ms and the radius of
a 12 kg block m is released from rest on a frictionless incline that makes an angle of 28 degrees below the block is a
a turntable has rotational inertia i and is rotating with angular speed w about a frictionless vertical axis a wad of
a 65 kg woman steps off a 10 m driving platform and drops straight down into the water if she reaches a depth of 45 m
the spin cycles of a washing machine have two angular speeds 408revmin and 648revmin the internal diameter of the drum
a helium-neon laser emits a beam of circular cross section with a radius r and a power pa find the maximum electric
a disk of radius r ad thickness w has a mass density that increases from the center outward given by 0rr where r is the
a 450 kg girl is standing on a 162 kg plank the plank originally at rest is free to slide on a frozen lake which is a
a particle executes simple harmonic motion with an amplitude of 71 cm at what displacement in cm from the midpoint of
suppose a star with radius 830 108 m has a peak wavelength of 684 nm in the spectrum of its emitted radiationa find the
a rotating cylinder about 16 km in length and 70 km in diameter is designed to be used as a space colony with what
white light is shone on a very thin layer ofalcohol n136 and above the alcohol layer interference maxima for two
a magnetic field increases from 0 to 030t in 15 seconds how many turns of wire are needed in a circular coil 15cm in
which of the following is not true of all electromagnetic waves only one answer is correcta the electric and magnetic
at a carnival you can try to ring a bell by striking a target with a 968-kg hammer in response a 0358-kg metal piece is
a square 0141 m on a side is mounted so that it can rotate about an axis that passes through the center of the square
four identical masses of 31 kg each are located at the corners of a square with 15 m sides what is the net force on any
house painter stands 3 m above the ground on a 52-m-long ladder that leans against the wall at a point 47 m above the