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estimate the work done by the force in displacing a particle from x 10 m to x 35 m the curve is given by f ax2 with
each second 1150 m3 of water passes over a waterfall 95 m high three-fourths of the kinetic energy gained by the water
the intensity of the sound wave from a jet airplane as it is taking off is 85 wm2 at a distance of 40 m what is the
a 50 kg bundle starts up a 30deg incline with 128 j of kinetic energy how far will it slide up the plane if the
a transverse wave on a string is described by the equation yx t 229 cm sin107 radst 18 radsxa what is the maximum
a flight attendant wants to change the temperature of the air in the cabin from 180deg c to 212deg c without changing
a cylinder in a car engine takes vi 450 10-2 m3 of air into the chamber at 30deg c and at atmospheric pressure the
a uniform ladder of length l and weight w is leaning against a vertical wall the coefficient of static friction between
a disk-shaped merry-go-round of radius 299 and mass 170 rotates freely with an angular speed of 0623 a 593 person
in an advanced laboratory class a student performs the photoelectric experiment ultraviolet light is shone on a
an electromagnetic plane wave at a certain location has an electric field pointed up which is given as a function of
you have designed a new musical instrument of very simple construction your design consists of a metal tube with length
an initially stationary 27 kg object accelerates horizontally and uniformly to a speed of 16 ms in 31 s in that 31 s
a rubber raft of mass 3m floats past a dock at 1 ms toward the east a girl of mass 2m runs down the dock and jumps in
an oil tanker has collided with a smaller vessel resulting in an oil spill in a large calm-water bay of the ocean you
a large optical telescope with an aperture of diameter 26 m is used to study the moon what is the size of the smallest
calculate the size of the smallest object on mars that this telescope can resolve assume mars is at its closest
a metal container which has a mass of 88 kg contains 151 kg of water a 24-kg piece of the same metal initially at a
a helium-neon laser wavelength 630 nm is used in a single-slit experiment with a screen 75 m away from the slit if the
a firehose 15 m long is uncoiled by pulling the nozzle end horizontally along a frictionless surface at the steady
a conical pendulum is formed by attaching a 410 g mass to a 13 m string the mass swings around a horizontal circle of
a person stands at a point p relative to two plane mirrors oriented at 90deg how far away do the persons images appear
a sphere of radius r starts from rest and rolls without slipping along a curved surface dropping through a vertical
a 50kg block is put on top of a 65kg block to cause the top block to slip on the bottom one while the bottom one is
a helicopter propeller blade starts from rest and experiences a constant angular acceleration of 170 rads2 find the