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A uniform drawbridge must be held at a 37 degree angle abovethe horizontal to allow ships to pass underneath. The drawbridgeweighs 45000 N and is 14.0 m long. A cable is connected 3.5 m fromthe hinge where the bridge pivots and pulls hoizontally on thebridge to hold it in place.
a) What is the tension in the cable?
b) Find the magnitude and direction of the force the hingeexerts on the bridge.
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. The plate is 6.50 cm thick (vertical dimension) and covered with water (n = 1.33) to a depth of 11.8 cm. Calculate the apparent thickness of the plate as viewed from above the wa..
Two capacitors connected in parallel produce an equivalent capacitance of 40.0?F, What is the individual capacitance of each capacitor
You take the elevator to the roof of a midtown skyscraper that is 100 meters high. How far from the side of the buliding will it land
A car approaches the top of a hill that is shaped like a vertical circle with radias, r=55.0m. What is the fastest speed a car can go
A wrecking yard inventor wants to pick up cars by charging a 0.400 m diameter ball and inducing an equal and opposite charge on the car. What is the electric field near the surface of the ball
A simple pendulum with mass m = 1.5 kg and length L = 2.41 m hangs from the ceiling, What is the magnitude of the radial acceleration as the pendulum passes through the equilibrium point
One proposed fusion reaction combines lithium 3Li6 (6.015 u) with deuterium 1H2 (2.014 u) to give helium 2He4 (4.003 u): 1H2 + 3Li6 ----> 22He4. How many kilograms of lithium would be needed to supply the energy needs of one household for a year, est..
Maddox takes off on his jet ski so they have a combined mass of 319.86kg. The skis have a thrust of 982.13N, What is Maddox's top speed
A farm tractor tows a 3550-kg trailer up a 18?incline with a steady speed of 3.0 m/s. What force does the tractor exert on the trailer
The human eye can detect light intensities as small as about 8 10-23 W/m2. How does this force compare to the weight of an electron
three forces when added produce a resultant force that is 100N pointing 63° above the positive x-axis. what are the magnitude and direction of the third force
A 4.7×10?2-T magnetic field passes through a circular ring of radius 2.8cm at an angle of 14?with the normal, Find the magnitude of the magnetic flux through the ring
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