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A street lamp weighs 150N. It is supported by two wires thatform an angle of 120 degrees with each other.The tensions in thewires are equal.
a. What is the tension in each wire supporting the street lamp?
b. If the angle between the wires supporting the street lamp isreduced to 90 degrees, what is the tension in each wire?
The voltage across the terminals of a 9.20V battery is 8.40V when the battery is connected to a 50.0? load. What is the battery's internal resistance
A bucket filled with dirt of mass 22 kg is suspended by a rope that hangs over a pulley of mass 31kg and radius 0.15 m. everything is at first at rest.
as a health professional in australia there is a responsibility to protect our patient from being placed at risk of
an electron is accelerated by a constant electric field of magnitude 305 nc.a find the acceleration of the electron.b
the light intensity incident on a metallic surface with a work function of 1.17eV produces photoelectrons with maximum kinetic energy of 4.17eV. what is the maximum kinetic energy of the photoelectrons
A long, straight wire carrying a current of 2.00 A is placedalong the axis of a cylinder or radius 0.500 m and a length of 3.00m. Determine the total magnetic flux through the cylinder
you push a 20kg box on a wooden floor, downward to the right at an angle of 60degrees to the vertical, with a constant speed of .5m/s. How hard did you push the box
A small insect viewed through a convex lens is 1.6 cm from the lens and appears twice its actual size. What is the focal length of the lens
two capacitors c1 4.00microf and c2 14.0microf are connected in series to a 9.00 v battery.a find the equivalent
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Class 2 lasers, including many laser pointers, produce visible light with no greater than 1 mW total power. Find the peak electric field in the laser beam
A cat rides a merry-go-round while turning with uniform circular motion. At time t1 = 2.00 s, What is the magnitude of the cat's centripetal acceleration
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