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The body of an automobile is to be protected by a spring-loaded bumper, which is attached to the automobile's frame. Design the bumper so that it will stop a 3500-lb car travelling freely at 5 mi/h and not deform the springs more than 3 in. Submit a sketch of your design showing the placement of the springs and their stiffness. Plot the load-deflection diagram for the bumper during a direct collision with a rigid wall, and also plot the deceleration of the car as a function of the spring's displacement
The inner edge of a race track is in the form of a rectangle with two semicircular ends on the shorter sides. The rectangle is 82.0 m wide and 137.0 m long. The race track is 5.50 m wide.
Between January 1 and April 1 the earth completes 1/4 of its annual revolution. What is the earth's change in acceleration during this time
Two scales on a voltmeter measure voltages up to 20.0 V and 28.0 V, respectively. Determine the coil resistance
An iron casting containing a number of cavities weighs 16967.7 N in air and 13045.8 N in water. What is the total volume of all the cavities in the casting
A nuclear power plant generates 3000 MW of energy from nuclear reactions in reactor%u2019s core. What is the maximum thermal efficiency of the power plant
A basketball rolls without slipping down an incline of angle ?. The coefficient of static friction is ?s. Model the ball as a thin spherical shell. (Use any variable or symbol stated above along with the following as necessary: m for the mass of the ..
A person doing a chin-up weighs 655 N exclusive of the arms. During first 15 cm of the lift, each arm exerts an upward force of 355N on the torso. If the upward movement starts from rest, what is the person's velocity at this point.
Consider a large chemical storage tank that is 100 ft in diameter and 25 feet tall. What is the force exerted by the fluid on the base of the tank
What is the minimum area (in square meters) of the top surface an ice slab 0.251 m thick floating on fresh water that will hold up a 1060 kg automobile
Chadwick is pushing a piano across a level floor he piano can slide across the floor without friction. If Chadwick applies a horizontal force to the piano, what is the piano's acceleration? Determine the object of interest for the situation described..
Throughout three hours one winter afternoon, when outside temperature was 9° C, a house heated by electricity was kept at 21° C with the expenditure of 46kwh (kilowatt•hours) of electric energy.
Calculate the total number of electrons bombarding the target of an X-ray tube operated at 100 mA for 0.1 seconds
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