A cylindrical tank is assembled by welding steel sections circumferentially. Tank diameter is 1.5 m, thickness is 20 mm, and internal pressure is 2.0 MPa. The maximum shear stress in the cylindrical part of the tank is approximately:
(A) 17 MPa
(B) 26 MPa
(C) 34 MPa
(D) 38 MPa
(D) 38 MPa
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a. up, down and strange b. charm, top and bottom c. red, green and blue d. all of the above
A body of mass 5.0 kg is suspended by a spring which stretches 10 cm when the mass is attached. It is then displaced downward an additional 5.0 cm and released. Its position as a function of time is approximately
a. y = ?0.10 sin 9.9t b. y = 0.10 cos 9.9t c. y = ?0.10 cos (9.9t + .1) d. y = 0.10 sin (9.9t + 5) e. y = ?0.05 cos 9.9t
Series Resonance: An ac circuit has a 100-? resistor in series with a 4.9-?F capacitor and a 700-mH inductor. At what frequency does the circuit act like a pure resistance?
A. 0.29 MHz B. 1.9 MHz C. 12 MHz D. 0.54 kHz E. 86 Hz
According to our present theory of solar system formation, which of the following lists the major ingredients of the solar nebula in order from the most abundant to the least abundant?
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