A thin-walled cylindrical tank, under internal pressure p, is compressed by a force F 5 75 kN. Cylinder diameter is d 5 90 and wall thickness t 5 5.5 mm. Allowable normal stress is 110 MPa and allowable shear stress is 60 MPa. The maximum allowable internal pressure pmax is approximately:
(A) 5 MPa
(B) 10 MPa
(C) 13 MPa
(D) 17 MPa
(C) 13 MPa
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Standing Sound Waves: A 0.13-m string, fixed at both ends and vibrating in its n = 4 harmonic, excites a pipe that is 0.88 m long and open at both ends, into its second overtone resonance. What is the speed of transverse waves on the string? The speed of sound in air is 345 m/s.
A. 38 m/s B. 36 m/s C. 34 m/s D. 32 m/s E. 30 m/s
A 2 kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2 m/s, and they stick together. After the collision, the velocity of the combined bodies is 0.8 m/s pointing towards the left
Indicate whether the statement is true or false
A standard candle is an object with a known luminosity
a. True b. False Indicate whether the statement is true or false
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What will be an ideal response?