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A 70-mm-diameter solid steel shaft, used as torque transmitter, is replaced with a 70-mm hollow shaft having a 6 mm wall thickness. If both materials have the same strength, what is the percentage reduction in maximum torque transmission? What is percent reduction in shaft weight? What conclusions can you draw from your calculation?
a cylindrical tank with hemispherical ends is required to hold 150 psi of pressurized air at room temperature. the
a simple sling can be built by placing a projectile in a tube and then spinning it. consider a simple model in which
a dish of liquid water is placed on a table in a room. after a while all of the water evaporates. taking the water and
Examine the influence of the vibration on the grain size, microstructure and mechanical properties of aluminium-silicon alloys (Al-Si) during solidification.
Determine the coefficient of kinetic friction µ,k be- tween the cable and the pipes, the maximum ten- sion T in the cable between the pipes, and the sag h in the cable.
a bullet of mass m0 is fired horizontally with a velocity v0 into the slender bar of a pendulum of mass m and length l
a small kiln for firing ceramic products has inside dimensions 1 m wide 1 m high and 1.5 m deep. the walls are 50 cm
a prototype 90 degree pipe elbow has ethyl alcohol at 20 degrees celsius flowing through it. the pressure drop through
Air in a piston-cylinder device is compressed from an initial state (temperature = 80 °C, pressure = 100 kPa, volume = 0.3 m3) to a final state (temperature = 250 °C, pressure = 600 kPa), during a polytropic process (n = 1.28094065700868). What is th..
hot water flows through a pvc k.092 wmk pipe whose inner diameter is 2 cm and outer is 2.5 cm. the temperature of the
Cooks often use aluminum pans for cooking in ovens. Some cooks try to reach into the hot oven and lift the pan out without hotpads. How successful would they be?
an insulated rigid-wall tank contains air at 20 c and 2 bar. a paddle wheel located in the tank does work on the air in
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