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A rubber ball (see figure) is inflated to a pressure of 60 kPa. At that pressure the diameter of the ball is 230 mm and the wall thickness is 1.2 mm. The rubber has modulus of elasticity E = 3.5 MPa and Poisson's ratio 0.45. Determine the maximum stress and strain in the ball.
air at 1 atm and 35c flow across a 5 cm diameter cylinder at velocity 50 ms . the cylinder surface is maintained at
A swimmer with body mass 50 kg is pulled from the ocean with hypothermia. Her body temperature is 27°C. She is connected to a shell and tube heat exchanger. Blood flow through the device is kept constant at 1,000 ml/min. The perfusionist adjusts the ..
if a kitchen-sink water tap leaks one drop per second how many gallons of water are wasted annually? what is the mass
A two-story building frame is modeled as shown in Fig. The girders are assumed to be rigid, and the columns have flexural rigidities El1 and El2, with negligible masses. The stiff¬ness of each column can be computed as
a 356 mm diameter main services a section of a mine and carries 4.8 kgs of compressed air at peak periods. if the main
the truck at b is used to hoist the cabinet up to the fourth floor of a building using the rope and pulley arrangement.
an otto cycle uses air as the working fluid its state at the beginning of the compression is 14 psia and 60 degrees f
a gas over liquid lifting device has a 200 gallon reservior in which the pressure within the reservior is raised by 200
if in vickers hardness test a sample is tested at 30kgf load and length of diagonals measured were 0.497 mm and 0.502
the setup for grinding a type of bearing is considered under control if the bearings have a mean diameter of 5.000 mm.
A piston-cylinder setup filled with air, initially at 27 °C, 1 bar, changes to 17 °C, and 0.9 bar. Determine, as a present, the change in volume of the air from its initial volume. (in %)
a tank with a volume of 0.142 m3 is initially evacuated. the tank develops a small hole. air from the surroundings
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