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Derive an expression relating the torque, T, in a tension test to the shear stress at the surface, τ s, in terms of the bar diameter, D, assuming that the bar is
A. Entirely elastic, so that τ varies linearly with the shear strain, γ .
B. Entirely plastic and does not work-harden, so that the shear stress, τ , is constant.
consider a stable nocturnal boudary layer in a 12 hr night. the wind is blowing at 5 ms and the surface is cooled with
a fundamental law of motion states that the acceleration of an object is directly proportional to the resultant force
a container of air with a fixed volume of 1 ft3develops a slow leak. the container originally is at 900 degrees at
For the two processes given below, determine the final temperature, pressure, specific volume, and the changes in internal energy, enthalpy, and entropy. Calculate the final temperature and change in specific internal energy as steel at 212 kPa and 5..
Refrigerant-134a is throttled from saturated liquid state at 7 bar to a pressure of 1.4 bar. Determine the temperature drop during this process and the final specific volume.
a rigid vessel contains 10 kg of steam. the steam is initially at 10 bar and 300 c. after a period of time the pressure
a ball is tossed from an upper-story window of a building. the ball is given an initial velocity of 8.20 ms at an angle
A slow leak developed in a tire (assume constant volume), in which it takes 3 hr for the pressure to decrease from 30 psig to 25 psig. The air volume in the tire is 0.5 ft3, and the temperature remains constant at 60 oF. The mass flow rate of the air..
an aircraft has a glide ratio of 12 to 1 meaning the plane drops 1m for every 12m it travels horizontally. a buildng
A uniform linear charge density of 4 nC/m is distributed along the entire x axis. Consider a spherical (radius = 5 cm) surface centered on the origin. Determine the electric flux through this surface.
question helpquestion 1 determine the headwater depth of a 1000 mm high by 1500mm wide concrete box culvert operating
the turbine rotor in the power plant of a ship as shown in fig. 3 has a weight of 12.75 kn with centre of gravity at g
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