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A crate is dragged 3.0 meter along a rough floor with a constant velocity by a worker applying a force of 500 Newton to a rope at an angle of 30o to the horizontal.
a) Calculate how many forces are acting on the crate?
b) Calculate how much work does each of these forces do? State specific values for each force.
c) Calculate the total work done on the crate?
A flea is able to jump straight up about 0.56 m. It has been said that if a flea were as big as a human, it would be able to jump over a 100-story building, How high would this "superflea" be able to jump
A plane flies at 1.75 times the speed of sound. Its sonic boom reaches a man on the ground 1.00 min after the plane passes directly overhead
The second-order dark fringe in a single-slit diffraction pattern is 1.40 mm from the center of the central maximum. Calculate the wavelength of the incident light
A 75kg gunsmith uses a friction-less merry-go-round to estimate the speed of a .036g round fired from a gun. What was the speed of the round
A boulder has a volume of 1 m3 and a mass of 5000 kg. what will be the effective mass of the boulder
A VW Beetle goes from 0 to 60 mi/hr with an acceleration of +2.35 m/s2. Find the acceleration (in m/s2) of the dragster
in the x-y plane a charge of -4.6 uc is on the x-axis at the point -30cm0 and a second charge of 7.2 uc is located on
what is the approximate yield strength of a copper silica alloy which has spherical precipitates of silica of average
An object is placed 17.4 cm to the left of a thin diverging lens that has focal length ?11.7 cm. What is the distance between the object and the image
a plank of mass m and length L is attached to a wall at one end, What is the magnitude of the force f exerted on the plank by the wall in terms of D, m, L
A 1110 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960 N crate hangs from far end of beam.
An inductor is connected to a 20.0 Hz power supply that produces a52.0 V rms voltage. What inductance is required to keep the maximum current in the circuit below79.0 mA?
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