A plane stress element on a bar in uniaxial stress has a tensile stress of ?? 5 78 MPa (see figure). The maximum shear stress in the bar is approximately:
(A) 29 MPa
(B) 37 MPa
(C) 50 MPa
(D) 59 MPa
(D) 59 MPa
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How many significant figures are in 576,000?
A) 3 B) 4 C) 5 D) 6 E) ambiguous
The sunspot cycle is sometimes described as lasting 11 years, but others prefer to consider it as 22 years; explain the rationale
What will be an ideal response?
The excess charge on this sphere is closest to
A) 700 nC. B) 79 nC. C) 0.35 nC. D) 315 nC. E) 350 nC.
In this course we have seen that baryons have inertial and gravitational mass, intrinsic angular momentum, and other internal properties that have been given names like baryon number, strangeness, charm, etc. The Standard Model's explanation for these properties of baryons is that
a. the baryons are states of something more elementary that can exist in multiple quantum states. b. the leptons are states of something more elementary that can exist in multiple quantum states. c. photons are states of something more elementary that can exist in multiple quantum states. d. according to the Heisenberg Uncertainty Principle quantum numbers are indeterminate. e. quarks are states of something more elementary that can exist in multiple quantum states.