A thin-walled spherical tank with a diameter of 1.5 m and wall thickness of 65 mm has an internal pres- sure of 20 MPa. The maximum shear stress in the wall of the tank is approximately:
(A) 58 MPa
(B) 67 MPa
(C) 115 MPa
(D) 127 MPa
(A) 58 MPa
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The unbalanced force acting on an object is zero. What is the direction and magnitude of the object's velocity and acceleration?
A 0.28-kg stone you throw rises 34.3 m in the air. The impulse the stone receives from your hand while being thrown is
A.
s, up.B.
s, down.C.
s, up.D.
s, down.E.
s, up.Shell Radius: A hydrogen atom with a barely bound electron may have an average radius as large as a bacterium, which is a radius of 14 ?m. What is the nearest principal quantum number of the atom in this state? The radius for ground state hydrogen is 0.0529 nm.
A. 514 B. 51 C. 16 D. 264,650
Consider a plot of the displacement (x) vs. applied force (F) for an ideal elastic spring. The slope of the curve would be
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