Fluid Flow: Water flows out of a large reservoir through 5.0-cm diameter pipe. The pipe connects to a 3.0-cm diameter pipe that is open to the atmosphere, as shown in the figure. What is the speed of the water in the 5.0-cm pipe? Treat the water as an ideal incompressible fluid.
A. 2.3 m/s
B. 3.2 m/s
C. 3.9 m/s
D. 8.9 m/s
E. 10 m/s
Answer: B
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A. 60.9 kHz B. 56.5 kHz C. 61.3 kHz D. 56.1 kHz
Two spheres are made of conducting material. Sphere #2 has twice the radius of Sphere #1 . What is the ratio of the capacitance of Sphere #2 to the capacitance of sphere #1?
a. 1, since all conducting spheres have the same capacitance. b. 2 c. 4 d. 8 e. A single sphere has no capacitance since a second concentric spherical shell is necessary to make a spherical capacitor. Thus, none of the answers above is correct.
An object 4 cm high is placed 15 cm in front of a convex mirror with a focal length of -10 cm. What is the image position (in cm)?
a. -8 b. -4 c. -2 d. -6 e. 30
The requirement to use powder metallurgy techniques makes oxide dispersion strengthened metals _________in comparison to other metal strengthening techniques.
Fill in the blank(s) with the appropriate word(s).