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A draw bridge of length L is being held up by an axel at its pivot and by a chail that is also of length L. The drawbridge has uniform mass.
A) What is the tension in the chain as a function of the angle is makes with the horizontal?
B) Are there any angles that are mathematically impossible? Do these mathematical impossibilities make physical sense?
C) The drawbridge covers a moat of width L, protecting a castle wall that is H high. What is the minimum angle to shoot an arrow so that it only barely clears the wall?
What is the minimum coefficient of friction that will prevent sliding. What should be the highest speed of the car so it can round the curve safely.
The drawing shows three different resistors in two different circuits. The battery has a voltage of V = 27 V, and the resistors have resistances of R1 = 50.0 ?, R2 = 25.0 ? and R3 = 10.0 ?. What is the total power supplied to the two resistors
illustrate what minimum projection angle would achieve this result? What maximum pro- jection angle would achieve this result?
To what distance x can a person who weighs 411-N walk on the overhanging part of the plank before it just begins to tip.
A Van de Graaff generator is used to demonstrate the effects of high potential. The device has a radius of 59.7 cm, How much charge does the dome hold at its maximum potential
A juniper wood plank measuring 5 ft by 0.6 ft by 0.3 ft is totally immersed in water. What is the net force acting on the plank
A 1.7kg , 20-cm-diameter turntable rotates at 50rpm on frictionless bearings, What is the turntable's angular velocity, in rpm, just after this event
The direction angle of a vector is defined as its positive angle relativeto the positive x-axis.
A circuit consists of a resistor in series with an inductor and an ac generator that supplies an rms voltage of 115 V. Find the average power dissipated in the circuit
Two 480g blocks of wood are 2.0 m apart on a frictionless table. A 9.0g bullet is fired at 440m/stoward the blocks. What is the speed of the second block after the bullet stops
Calculate the amount Stansfield should report as net cash provided (used) by financing activities in its 2010 statement of cash flows. (Enter amount as positive.)
A slide projector needs to create a 96.0 cm high image of a 2.20 cm tall slide. The screen is 301 cm from the slide. find focal length does the lens need
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