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Question: A plate girder used as a simple beam 36 ft long must support a concentrated load of 180 000 lb at the middle of the span and 45 000 lb at each quarter point. The girder is composed of a 48- by I-in web plate and four 6- by 6- by flange angles, all made of A36 structural steel. What should be the bolt spacing if Trill A307 bolts are used? Use the AISC code. Assume bearing-type connections.
A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. By how much does the ball clear or fall short of clearing the crossbar
Consider an airplane that normally has an air speed of 90 km/h in a 95 km/h crosswind blowing from west to east. Calculate its ground velocity when its nose is pointed north in the crosswind.
A sample of neon gas has its volume doubled and its temperature held constant. What will be the new pressure relative to the initial pressure? A quantity of steam ( 800 g) at 115oC is condensed, and the resulting water is frozen into ice at 0oC. How ..
You are on a ferries wheel. You wonder about the motion of the ride. You calculate the radius of the big wheel to be 15 meter, Find your speed and magnitude of your acceleration
A refracting telescope has an angular magnification of -90.00. The length of the barrel is 1.800 m. What are the focal lengths of (a) the objective and (b) the eyepiece?
Astronauts walking on the Moon are seen "bounding" rather than walking normally. Why?
In a physics laboratory experiment, a coil with 210 turns enclosing an area of 13cm^2 is rotated from a position, What is the average emf induced in the coil
A horizontal wire is hung from the ceiling of aroom by two massless strings. The wire has a length of 0.24m and a mass of 0.006 kg. A uniform magneticfield of magnitude 0.050 T is directed from theceiling to the floor. When a current of I = 25A ex..
A 3.6kg block on a incline that is measured as 45 degrees from the horizontal. uk = 0.2. A] how much does the friction force due during this distance?
Santa loses his footing and slides down a frictionless, snowy roof that is tilted at an angle of 30 degree. calculate his speed as he leaves the roof
An astronaut on the planet Zircon tosses a rock horizontally with a speed of 6.95 . The rock falls through a vertical distance of 1.20 and lands a horizontal distance of 8.65 from the astronaut. What is the acceleration of gravity on Zircon?
In science and technology, vectors provide a simple model for visualizing difficult concepts such as force, velocity, and electric fields. Vectors are essential for creating the amazing computer graphics we see today. Dot product of vectors is an ope..
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