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A set of seven built in bookshelves is to be constructed ina room. The floor to ceiling clearance is 7 ft 3 in. Each shelf is 1im thick. An equal space is to be left between the shelves, the top shelf and the ceiling, and is no shelf against the ceiling and no shelf on the floor.
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- A material is 250 cm long, 8 cm wide and 10 cm deep. The material is subjected to an axial force of 4500kN resulting to an expansion of 3cm. calculate for stress, strain, and the young’s modulus of elasticity for the materialA man jogging has a metabolic rate of 658 W. (a) Calculate his volume rate of oxygen consumption in L/s. ? L/s (b) Estimate his required respiratory rate in breaths/min if his lungs inhale 0.620 L of air in each breath and air is 20.9% oxygen. ?breaths/minA certain part of an aircraft engine has a volume of 2.6 ft. (a) Find the weight of the piece when it is made of lead. Ib (b) If the same piece is made of aluminum, what is its weight? Ib Determine how much weight is saved by using aluminum instead of lead. Ib
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- Don't use chat gpt plz Chatgpt means downvoteA copper wire has a length of 4.5 m and a diameter of 3.6 mm. under what load will it's length increase by 0.30mm?A trough full of water is 20ft. long and its cross section is in the shape of an isosceles triangle 4ft. wide across the topand 4ft. deep. How much is the work done in pumping all the water out of the trough over the top?