A soap film is suspended on a wire frame, as shown in Fig.2.10. The movable wire is
Question:
(a) Obtain an expression for the work done in stretching the film in terms of the surface tension τ, length ℓ, and displacement ∆x.
(b) Evaluate the work done, in J, if ℓ=5 cm, ∆x = 0.5 cm, and τ= 25 ×10-5 N/cm.
Step by Step Answer:
KNOWN A soap film on a wire frame is stretched FIND Determine the work done SCHEMATIC GIVEN DATA EN...View the full answer
Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
Related Video
The property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules. The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension. The molecules at the surface of a glass of water do not have other water molecules on all sides of them and consequently, they cohere more strongly to those directly associated with them (in this case, next to and below them, but not above). is not really true that a \\\"skin\\\" forms on the water surface; the stronger cohesion between the water molecules as opposed to the attraction of the water molecules to the air makes it more difficult to move an object through the surface than to move it when it is completely submersed
Students also viewed these Mechanical Engineering questions
-
For the same steam power plant as shown in Fig P6.99 and Problem 6.167E determine the rate of heat transfer in the economizer which is a low temperature heat exchanger and the steam generator....
-
A cast-steel C frame as shown in the figure has a rectangular cross section of 1 in by 1.6 in, with a 0.4-in-radius semicircular notch on both sides that forms midflank fluting as shown. Estimate A,...
-
A cast-steel C frame as shown in the figure has a rectangular cross section of 1.25 in by 2 in, with a 0.5-in-radius semicircular notch on both sides that forms midflank fluting as shown. Estimate A,...
-
FinCorp Inc. is exploring different portfolio allocations between two stocks. Complete the following table. Case1 Case 2 Case 3 Case 4 Case 5 $ invested in stock 1 $ invested in stock 2 Total $...
-
Amadou Company provided the following information on one of its factories: a. Maximum units produced in a quarter: 360,000 units b. Actual units produced in a quarter: 225,000 units c. Hours of...
-
Kelley Company reports $960,000 of net income for 2015 and declares $120,000 of cash dividends on its preferred stock for 2015. At the end of 2015, the company had 400,000 weighted-average shares of...
-
The following are the self-reported times (hours for month), spent on homework, by random samples of juniors in two different majors. Use the \(U\) test at the 0.05 level of significance to test...
-
Georgian Ambience Ltd. makes fine colonial reproduction furniture. Upholstered furniture is one of its major product lines and the bottleneck on this production line is time in the upholstery shop....
-
H2O changes from an initial state defined by 1000 F and 3000 psia to a final state defined by 1.0 psia and a quality of 90 percent. a. Locate the initial and final state point on a T-S diagram. b....
-
The Fisher Products Company produces a line of childrens parlor games. The production process includes two departments: fabrication and assembly. The fabrication shop produces game parts, such as...
-
The friction tongs shown are used to lift a 750-lb casting. Knowing that 36 h = in., determine the smallest allowable value of the coefficient of static friction between the casting and blocks D and...
-
The steel-plate clamp shown is used to lift a steel plate H weighing 550 lb. Knowing that the normal force exerted on steel cam EG by pin D forms an angle of 40° with the horizontal and...
-
Exercises 157159 will help you prepare for the material covered in the first section of the next chapter. Use the following graph to solve this exercise. a. What is the y-coordinate when the...
-
Which of these elements are in the output of the following? (Choose three.) A. sugar B. minnie C. snowball D. 1 E. 2 F. 3 var q = new ArrayDeque (); q. offerFirst("snowball"); q.offer ("sugar");...
-
How many of the following are legal declarations? A. One B. Two C. Three D. Four E. Five F. Six public void greek() { [][]String alpha; [] String beta; String [] [] gamma; String[] delta[]; String...
-
Which of the following references the first and last elements in a nonempty array? A. trains[0] and trains[trains.length] B. trains[0] and trains[trains.length - 1] C. trains[1] and...
-
Fill in the blank so the code prints gamma. (Choose two.) A. (s, t) -> s.compareTo(t) B. (s, t) -> t.compareTo(s) C. Comparator.comparing((String s) -> s.charAt(0)) D. Comparator.comparing((String s)...
-
What does the following output? A. peter B. wendy C. Does not compile due to line x1 D. Does not compile due to line x2 E. Does not compile due to another reason F. Throws an exception at runtime var...
-
Crane Ltd has proposed that the company adopt the revaluation model for fixed assets. Some of these assets are hard to obtain and certain items have increased in value in the current period, however...
-
Feller Company purchased a site for a limestone quarry for $100,000 on January 2, 2019. It estimate that the quarry will yield 400,000 tons of limestone. It estimates that its retirement obligation...
-
The simple device pictured here, a pycnometer, is used for precise density determinations. From the data presented, together with the fact that the density of water at 20 C is 0.99821 g/mL, determine...
-
Solve these equations Sy = b with 81, 82, 83 in the columns of S: 0 0 10 Y2 100 0 1998-8-1988-8 and S is a sum matrix. The sum of the first 5 odd numbers is ][
-
Active Life Ltd has decided to manufacture a new line of running shoes based on a $50,000, two-year feasibility study. The shoes will sell for $85 a pair and has a variable cost of $30 a pair. It is...
-
Arch Airway expects to purchase 5.6 million gallons of jet fuel in three months and decides to use heating oil futures to hedge the fuel price risk. A regression has been performed: The dependent...
Study smarter with the SolutionInn App