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At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with an amplitude of 20.0 cm. It is observed that the maximum speed of the bunch of bananas is 41.0 cm/s. What is the weight of the bananas in newtons?
A radio station broadcasts with a power of 50,000 watts. Estimate the average intensity of the wave at a distance of 50 km from the radio transmitting antenna
A playground merry-go-round has radius 3-{rm m} and moment of inertia 3000-{rm{ kg}} cdot {rm{m}}^2 about a vertical axle through its center, and it turns with negligible friction.
A weight lifter raises a 972 N weight a vertical distance of 1.87 m. Compute the work done by the force exerted on the weight by the weight lifter
A 29.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 85.0 N and is directed at the angle of 30.0° above the horizontal. Find out the coefficient of kinetic friction.
In the Bohr model of the hydrogen atom, an electron in the 6th excited state moves at a speed of 6.08 104 m/s, What is the effective current associated with this orbiting electron
A long rod, insulated to prevent heat loss along its sides, is in perfect thermal contact with boiling water (at atmospheric pressure) at one end and with an ice-water mixture at the other.
Light of wavelength 670nm falls on two slits and produces an interference pattern in which the third-order bright red fringe is 49mm, What is the separation of the two slits
The displacement of a particle in meters moving along x axis is given by x=18t+5t^2, calculate instantenaous velocity at t=2 seconds and instantaneous accelration
Two identical positive charges exert a repulsive force of 6.2 multiplied by 10-9 N when separated by a distance of 3.4 multiplied by 10-10 m. Calculate the charge of each.
A diver is planning to salvage a Spanish galleon located in 200 feet of water. He plans to use a diving suit that will be supplied with air from a hose. Calculate which compressor should be bought by the diver for the given condition
An unstrained horizontal spring has a length of 0.34 m and a spring constant of 200 N/m. Two small charged objects are attached to this spring, one at each end, determine the possible algebraic signs
A horse pulls a 300 kg wooden sleigh in the snow via a massless rope. The sleigh is towing a 50 kg wooden box behind it via another massless rope. What is the acceleration of the sleigh
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