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A small water droplet of diameter D=100 micro meter and temperature T_mp = 0 deg C falls on a nonwetting metal surface that is at temperature T_s = -15 deg C. Determine how long it will take for the droplet to freeze completely. The latent heat of fusion is h_sf = 334 kJ/kg.
a small mechanical part in a complicated machine moves such that its position relative to a fixed frame of reference is
1. A Brayton cycle uses air and produces a net work of 14000 Btu/s with an inlet state of 60°F, 14.7 psi and a compression ratio of 16. The heat added in the combustion process is 400 Btu/lbm. If the thermal efficiency is 0.547 Determine: Using va..
if the critical resolved shear stress for yielding in aluminum is 240kpa. calculate the tensile stress required to cause yielding when the tensile axis is [001]
How do I find the factor of safety using the distortion energy failure theory?
Assuming the pulley is a uniform disk with a mass of 0.31 {rm kg}, find the speed of the block after it has fallen through a height of 0.50 {rm m}.
A paper clip is made of wire 0.7 mm in diameter. If the original material from which the wire is made is a rod 25 mm in diameter, calculate the longitudinal engineering strain and true strain that the wire has undergone during processing.
The tank has a 180 mm inside diameter and a 12 mm wall thickness. Knowing that the tank contains compressed air under a pressure of 8 MPa, determine the magnitude T of the applied torque for which the maximum normal stress in the tank is 75 MPa.
Calculate the power required to overcome the skin friction drag on the keel of a sailing dingy moving through water at 2m/s. The keel projects 0.8m into the water and it is 0.4m wide
the system on site is a pressure sand filter with a service curve. the filter is backwashed using the feed pump at a
Determines if the member forces are in tension or compression (note that a negative number denotes compression and a position number denotes tension)
The total time it takes to fall is 37 seconds. Find the horizontal lead to hit the target.
under a stress of 1105 mpa a sample of ag has a modulus of elasticity of 580 gpa. assuming the center-to-center
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