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Two people carry a heavy electric motor by placing it on a light board 2.50m long. One person lifts at one end with a force of 440 N , and the other lifts at the opposite end with a force of 625 N.
What is the weight of the motor?
Where along the board is its center of gravity located?
A long solenoid has 231 turns in a length of 13 cm, radius of 1.8 cm, and I= 1.3 A. Find the magnitude of the average induced emf in the coil
Two negative, equally charged drops of water, 0.80 mm apart, exert an electrostatic force of 78.5 x 10-9 N on each other. Determine the net charge on each drop. Give your answer in the form "a.bc" pico-Coulombs.
Consider the mass spectrometer shown schematically in the figure below. The electric field between the plates of the velocity selector is 2100 V/m, Calculate the radius r of the path for a singly charged ion with mass m = 2.29 10-26 kg
The amplitude of the voltage across an inductor can be greater than the amplitude of the generator emf in an RLC circuit. Consider an RLC circuit with Epeak = 50 V, R = 14, L = 1.05 H, and C = 1.12 µ F. Find out the amplitude of the voltage across th..
A thin sheet of transparent material has an index of refraction of 1.80 and is 24.0 µm thick. how many fringe shifts occur in the pattern
A skier of mass 73 kg is pulled up a slope by a motor-driven cable, What power (expressed in hp) must a motor have to perform this task
Consider a systen of N non-interacting particles for which the energy of each particle can assume two and only two distinct values: 0 and E (E>0). Find the entropy of the system
You have been visiting a distant planet. Your measurements have determined that the planet's mass is four times that of earth but the free-fall acceleration at the surface is only one-fourth as large
A dockworker applies a constant horizontal force of 89.0N to a block of ice on a smooth horizontal floor
A student holds a laser that emits light of wavelength 633nm. The beam passes through a pair of slits separated by 0.3mm, Find the speed of the first-order maxima on the screen
A 0.075 kg toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.15 m/s in a horizontal circle of radius 0.35 m
An object of mass 5.0 kg is attached to a string of length 2.0 m and rotating in a horizontal circle with an angular velocity of 3.0 rad/s
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