A thin-walled cylindrical tank, under internal pressure p, is com-pressed by a force F 5 75 kN. Cylinder diameter is d 5 90 mm 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

Physics & Space Science

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A 4.00 kg ball is traveling at 3.00 m/s and strikes a wall. The 4.00 kg ball bounces off the wall with a velocity of 4.0 m/s. If the contact with the wall by the ball lasts for 0.10 seconds, then the average force on the ball is

A. 230 N. B. 280 N. C. 320 N. D. 360 N. E. 400 N.

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What will be an ideal response?

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A 150-W light bulb is designed to operate at 110 V dc. How much current does it draw?

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