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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?
A ball is thrown upward from the top of a building at an angle of 60.0° to the horizontal, What is the horizontal distance (in m) covered by ball before hitting the ground
In a single slit diffraction experiment, a beam of monochromatic light of wavelength 640 nm is incident on a slit of width 0.400 mm. what are the positions of the first dark fringes
A 10-kg fish is being yanked upward out of the water and the fishing line breaks. If the line is rated to a maximum 200 N tension, then what was the minimum acceleration of the fish? DRAW THE FBD!
A simple pendulum makes 137 complete oscillations in 3.20 min at a location where g = 9.80 m/s2. Find the period of the pendulum.
A 3.7cm x 5.8cm rectangle lies in the xz-plane, What is the electric flux through the rectangle if E = (80i + 70j) N/C
a plane locked on cruise control flying due east at 300ms but its resultant velocity is 300.66ms at 3.8 south of east.
A 150 pF capacitor and a 600 pF capacitor are both charged to 2 kV. They are then disconnected from the voltage source and are connected together, Find the energy lost when the connections are made
The length of a simple pendulum is 0.86 m and the mass of the particle (the "bob") at the end of the cable is 0.33 kg. The pendulum is pulled away from its equilibrium position by an angle of 9.0 ° and released from rest.
Two people start at the same place and walk around a circular lake in opposite directions. How long will it be before they meet
A thin film of alcohol (n=1.36) lies on a flat glass plate(n=1.51). When monochromatic light, whose wavelength can bechanged, is incident normally, What is the minimum thickness of the film
A Hall-effect probe operates with a 120 -mA current. When the probeis placed in a uniform magnetic field of magnitude 0.0900 T, it produces a Hall voltage of 0.760 µV. The thickness of the probe in the direction of B is 2.00 mm.
A particle, starting from point A in the drawing(the height at A is 3.00 m), is projected down the curved runway.Upon leaving the runway at point B, the particle is traveling straight upward and reaches a height of 4.44 above the floor beforefalling ..
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