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Zoe is packing her belongings and moving in with Margaret. Her books are in boxes, which she plans to float down the river to Margaret's shack on a square raft that is 3 m on each side and 11 cm thick. It is made of wood having a specific gravity of 0.6. If each box has a mass of 20 kg, how many boxes can be placed on the raft if the books are to remain dry? Assume that the water remains calm.
The composite shaft consists of three sections: 1) a solid brass core, 2) a middle steel tube, and 3) an outer aluminium tube. The brass core (Gb= 39 GPa) has a diameter of 50 mm. The steel tube (Gs= 77 GPa) has an inner diameter of 50 mm and an ou..
At resonance, the amplitude is measured to be 0.8 cm. At 0.85 resonant frequency, the amplitude is measured to be 0.6 cm. Determine the damping factor (zeta) of the system.
consider a solar pond power plant operating on a closed rankine cycle. using refrigerant-134a as the working fluid
What is minimum radius of level curve that the wagon can negotiate at this speed without overturning?
An air-conditioning system is shown in Fig. in which air flows over tubes carrying Refrigerant 134a. Air enters with a volumetric flow rate of 50 m3/min at 32°C, I bar, and exits at 22°C, 0.95 bar. Refrigerant enters the tubes at 5 bar with a quality..
an ideal otto cycle has a compression ratio of 5.3. at the beginning of the compression process p190 kpa t127 c and
To what value does this series converge when t = 1
a cylindrical tank of radius r and depth h is filled with water. the tank is open to atmosphere. derive an expression
Determine the ideal launch vehicle that can put this orbiter into the parking orbit. (hint: you do not have to consider the Sun in this problem. Only SOI of the Earth and the Moon)
The paint on the rotating disk is worn off by dust in the air, exposing the base metal, which has an emissivity of s = 0.10. Determine the total power dissipated from the disks worn top surface.
Then, plot the curve for velocity versus radius. Specified increments of radial position can be input, but should include the centerline.
a square bar is made from 6061-t4 aluminum alloy. at 75 degrees f its length is 10.500 in. it is placed between rigid
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