The International Astronomical Union established 88 constellations that represent a defined area of the sky
a. True
b. False
Indicate whether the statement is true or false
True
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A horizontally-projected beam of electrons travelling at 55 km/s travels between two parallel plates between which there is an electric field. The beam travels exactly horizontally the whole time it is between the plates. What does this imply about the electric field between the plates?
A. It is 0. B. It is 56 pV/m upward. C. It is 56 pV/m downward. D. It doesn’t imply anything in particular.
The Galilean satellites orbit
a. Jupiter b. Saturn c. Uranus d. Neptune e. All of the above.
A drive shaft resists torsional shear stress of ?xy 5 40 MPa and axial compressive stress ?x 5 70 MPa. One principal normal stress is known to be 38 MPa (tensile). The stress ?y is approximately:
(A) 23 MPa
(B) 35 MPa
(C) 62 MPa
(D) 75 MPa
The earliest and most influential Greek philosopher was Aristotle, who among many contributions taught that
A) the four elements are earth, water, air, and fire. B) all motion is either natural or violent. C) violent motion requires a sustained push or pull. D) all of the above