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Question: What should be the proper length of a dressed-size 10- by 12-in oak beam carrying a uniform load of 1800 lb per linear foot? Solve for both a simple span and a cantilever. Consider both horizontal shear and bending. Use an allowable shear stress of 120 psi and an allowable bending stress of 1450 psi.
A car (m = 1610 kg) is parked on a road that rises 17° above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires?
An arrow is shot at an angle of θ=45 degree above the horizontal. The arrow hits a tree a horizontal distance D=220 meter away, at the same height above the ground as it was shot. Determine the time that the arrow spends in the air
Two capacitors C1 = 3.8 ?F, C2 = 17.8 ?F are charged individually to V1 = 14.4 V, V2 = 4.3 V. Calculate the final potential difference across the plates of the capacitors once they are connected
person leaning over a 124 m deep well accidentally drops a siren emitting sound of frequency 2430 hz. What beat frequency does this person perceive
In Emma's frame of reference, which beam of light travels at a greater speed, the one directed toward the front or the one directed toward the rear of the train, or do they travel at the same speed?
Two uniform spheres of mass 75 kg are fixed at 14 cm( along the y-axis) and 20 cm (along the x-axis). What is the initial acceleration of a uniform sphere of mass 5 kg if released from rest at the origin?
A 85.1 kg astronaut is working on the engines of a spaceship that is drifting through space with a constant velocity. How long does it take the astronaut to reach the ship
She finds that the distance along the slant of the roof is 11 feet 2 in, and the distance across the front of the shed is 14 ft and 4 in. She estimates the pitch of the roof is about 30 degrees. How many gallons of water will the roof collect for ..
A 550-Hz longitudinal wave in air has a speed of 343 m/s. How much time is required for the phase to change by 90° at a given point in space? (Given: lambda=0.624 m). At a particular instant, what is the phase difference (in degrees) between two poin..
A curve of radius 56 m is banked so that a car traveling with a uniform speed of 54 km/hr can round the curve without relying on friction to keep it from slipping to its left or right. What is theta?
The coefficient of static friction between a rope and the table onwhich it rests is \mu _{\rm{s}}. Find the fraction of the rope that can hangover the edge of the table before it begins to slip. Express your answer in terms ofmu_s.
A block of mass m1 = 43 kg on a horizontal surface is connected to a mass m2 = 16.3 kg that hangs vertically. Determine the tension in the cord
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