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A 2 mm diameter, spherical air bubble is suspended in an insulating fluid . with a focused laser, the bubble is heated so that the bubble radius increases by 90% . For spherical bubble the pressure difference between the bubble and surrounding fluid is given by delta P = 2s/r , where s is the interfacial tension and r is the radius of the bubble . assuming the interfacial tension is constant at 0.70 N/m, the initial bubble temperature is 300K, and the surrounding fluid has a pressure of 100 kPa calculate (a) the mass of the bubble , (b) the final temperature of the bubble ,(c) the work done by the gas , and(d) the laser energy required to perform the expansion.Additionally , is this is a realistic scenario?? Why? What assumption are most likely to fail? Note the volume of the bubble is related to the radius by V=(4/3)pr3
A plane can fly 305 mph in still air. If it can fly 185 miles downwind in the same amount of time it can fly 120 miles upwind, find the velocity of the wind.
Calculate the pressure of 15.0g of methane gas in a 1.50L vessel at 45.0 degrees C using (a) the Ideal Gas Law and (b) the van der Walls equation using the following information about the constants, a and b: a = 2.253 and b = 0.04278.
a circular curve of highway is designed for traffic moving at 85 kmh. assume the traffic consists of cars without
Determine the expected diffraction angle for the first-order reflection from the (310) set of planes for BCC chromium when monochromatic radiation of wavelength 0.0711 nm is used.
it is desired to design a system to keep a 1-million-galon capacity water tank filled. the plan is to use a centrifugal
steam expands in a turbine steadily at a rate of 25000 kgh entering at 6 mpa and 450degc and leaving at 20 kpa as a
Block A has a mass of 3 kg and B has a mass of 5 kg. If the system is released from rest, determine the velocity of each block in t=4s. Neglect the mass of the pulleys.
For this same component and alloy, compute the stress level at which fracture will occur for a critical internal crack length of 6.0mm.
matt has perfected the art of bungee jumping such that from a bridge above a river he can fall and just touch the
the rods ab and cd each have a 30-mm diameter and are 1m long. the modulus of the rods is 28 gpa. the rods are
a 23 kg crate rests on a 10 kg hand cart as shown. the center of mass of the combined cratecart is at c. the cart is
measuring fracture toughnessthe aim of this demonstration is to use measurements of the load required to propagate a
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