Fluid Mechanics Practice Exam+solutions

Jun 26th, 2016
Studypool Tutor
University of Texas at Austin
Price: $5 USD

Tutor description

30 question exam with solutions and explanations. Contains both Multiple choice and free response. Conceptually challenging, good practice.

Word Count: 2840
Showing Page: 1/10
sarwar (ss75322) Unit 1- Fluids lesmeister (250373002)This print-out should have 30 questions.Multiple-choice questions may continue onthe next column or page find all choicesbefore answering.001 (part 1 of 2) 10.0 pointsIn a car lift, compressed air exerts a force on apiston with a radius of 2.05 cm. This pressureis transmitted to a second piston with a radiusof 10.7 cm.How large a force must the compressed airexert to lift 12300 N car?1003 10.0 pointsThe four tires of an automobile are inflatedto an absolute pressure of 1.9 105 Pa. Eachtire has an area of 0.025 m2 in contact withthe ground.Determine the weight of the automobile.Correct answer: 19000 N.Explanation:Let : P = 1.9 105 Pa andA = 0.025 m2 .Correct answer: 451.487 N.Explanation:Let : r1 = 2.05 cm ,r2 = 10.7 cm , andF2 = 12300 N .P1 = P2 F2F1 = A1A2F2r122= r1 = F2 2 r22r22(2.05 cm)= 12300 N (10.7 cm)2Fg = 4 P A= 4 (1.9 105 Pa) (0.025 m2 )= 19000 N .004 10.0 pointsAn engineer weighs a sample of mercury ( =13.6 103 kg/m3 ) and finds that the weightof the sample is 7.5 N.What is the samples volume? The acceleration of gravity is 9.81 m/s2 .Correct answer: 5.62151 105 m3 .Explanation:= 451.487 N .Let :W = 7.5 N , = 13.6 103 kg/m3 ,g = 9.81 m/s2 .002 (part 2 of 2) 10.0 pointsWhat pressure produces this force? Neglectthe weight of the pistons.m=5Correct answer: 3.4197 10 Pa.Wg

Review from student

Studypool Student
" The best tutor out there!!!! "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1820 tutors are online

Brown University





1271 Tutors

California Institute of Technology




2131 Tutors

Carnegie Mellon University




982 Tutors

Columbia University





1256 Tutors

Dartmouth University





2113 Tutors

Emory University





2279 Tutors

Harvard University





599 Tutors

Massachusetts Institute of Technology



2319 Tutors

New York University





1645 Tutors

Notre Dam University





1911 Tutors

Oklahoma University





2122 Tutors

Pennsylvania State University





932 Tutors

Princeton University





1211 Tutors

Stanford University





983 Tutors

University of California





1282 Tutors

Oxford University





123 Tutors

Yale University





2325 Tutors