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A 6-m-long pole AB is placed in a hole and is guyed by three cables. Knowing that the tensions in cables BD and BE are 442 N and 322 N, respectively, determine
(a) The tension in cable CD,
(b) The reaction at A.
A three-way light bulb can produce 50W, 100W, or150 W, at 120V. Such a bulb contains two filaments that can be connected to the 120V individually or in parallel. Explain how the connections to the two filaments are made to give each of the three watt..
A step-down transformer is used for recharging the batteries of portable devices. Find the power delivered to the CD player
You access the roof of a building and throw a ball to the ground with an initial velocity of 12.0 m/s at an angle of 25.0° below the horizontal. At what time does the ball hit the ground
A man walking on a tightrope carries a long a pole which has heavy items attached to the two ends. If he were to walk the tight-rope with just a pole, what difference would it make to his balance
A flywheel has a constant angular deceleration of -2.36 rad/s2. Find the time required for the flywheel to come to rest
At the same time, the stationary trumpeter played the same note. Ballot heard 3.0 beats per second. How fast was the train moving toward him.
a ocean waves move toward the beach with a speed of 8.90 ms and a crest-to-crest separatiion of 15.0 m. you are in a
A track athlete running at fast pace had an instantaneous resultant force of 2800 N acting through the heel during heel strike, what were the horizontal and vertical forces acting on the heel
A 2kOhm resistor and 400mH inductor are connected in series to a 1300Hz generator with an rms voltage of 15V. what is the rms current in the current
A beam of white light shines normally on the reflective side of a compact disk whose information tracks are 1.60 um apart. What colour light will be observed at an angle of 45 degrees with respect to the normal?
given that the speed of sound in the air is 343 ms and that human ears are typically 20 cm apart what is the maximum
What is the difference between momentum by convective transport and momentum by molecular transport?
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