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A uniform drawbridge must be held at a 41 degree angle above the horizontal to allow ships to pass underneath. The drawbridge weighs 49,230 Newton and is 14.0 meter long. A cable is connected 3.5 meter from the hinge where the bridge pivots (measured along the bridge) and pulls horizontally on the bridge to hold it in place.
(a) Calculate the tension in the cable?
N
(b) Obtain the direction and magnitude of the force the hinge exerts on the bridge.
magnitude N
direction ° above the horizontal
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Unpolarized light with an intensity of 275 W/m2 passes by the two polarizers whose transmission axes are at an angle of 30.0° with respect to each other. What is an intensity of the light transmitted through both polarizers.
How to compute Average power output
A rectangular billboard in space has the dimensions 10 meters by 20 meters. How fast and in what direction with respect to the billboard would a space traveler have to pass for the billboard to appear square?
A certain light source is found to emit radiation whose peak value has a frequency of 1.21×1015 Hz. Calculate the temperature of the source
Assuming a planet of mass m moves around the Sun (with mass Ms) in a circular orbit of radius R, find its rotation period. explain how the period changes if the mass of the planet is doubled
A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 210 mi/h in 3.00 s. (a) Find the average acceleration of the plane. m/s2 (b) Assuming the acceleration is constant, find the distance the plan..
The magnetic field of a cylindrical magnet that has a pole-face diameter of 3.3 cm can be varied sinusoidally between 29.6 T, find the amplitude of the electric field induced by the variation
A horizontal power line of length 58.2 m carries a current of 2.18 kA northward .The Earth's magnetic field at this location has a magnitude of 5.30 X10^-5 T. Find the magnitude of the magnetic force on the power line
you send a beam of light from a material with index of refraction 1.23 into an unkown material. in order to help
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