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Q. A massless scaffold (beam) is held up by a wire at each end. The scaffold is 12 m long. A 300-N box sits 4.0 m from the left end. What is the tension in each wire?
Q. A wrench 0.3 meters long lies along the positive y-axis, and grips a bolt at the origin. A force is applied in the direction of langle 0, 1, 2rangle at the end of the wrench. Find the magnitude of the force in newtons needed to supply 100 newton-meters of torque to the bolt.
Find the gage pressure at the center of pipe A in pounds per square inch and in kilopascals.
A toy train is pushed forward and released at x_0 = 2m with a speed of 2m/s. It rolls at a steady speed for 2s, and then one wheel begins to stick. The train comes to a stop 6m from the point at which it was released. What is the magnitude of trai..
The period of oscillation of an object in a frictionless tunnel running through the Earth is 84.3 min. What is the time of oscillation of an object in a similar tunnel on the Moon.
An ocean liner leaves New York City and travels 16.10 ° north of east for 234 km. How far east and how far north has it gone? In other words, what are the magnitudes of components of the ship's displacement vector in directions (a) due east and (b..
Two people stand 3 m in front of large plane mirror and space 5m a part in dark room at what angle of incidence should one of them shine a flashlight on the mirror so that reflected beam directly strickes the other person.
What is the difference between voltage current characteristics for intrinsic and extrinsic semiconductor in both forward in addition to reverse direction.
New physics student having trouble with hw, not sure how to set this up or find the answer. Throw a ball straight up with an initial vel. of 18.5m/s. if ball is caught at the same height it was released, and then compute the max. Height achieved b..
A race car has a mass of 718 kg. It starts from rest and travels 45.0 m in 3.0 s. The car is uniformly accelerated throughout the entire time. What net force is exerted on it.
A 2.30-? F capacitor is fully charged by being connected to a 6.0-V battery. The fully charged capacitor is then connected to a 0.250-H inductor.
If a freight train can accelerate at 0.050 m/sec2, how far must it travel to increase its speed fro 2.0 to 8.0 m/sec?
What lengths of ship three sides according to the observer
A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from 0 to 4.50 m/s in 0.852 s. What are the magnitudes of the linear impulse and the average total force experienced by a 65.0 kg passenger i..
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