One light-year is about 10 trillion kilometers
Indicate whether the statement is true or false
TRUE
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You are asked to select a material for a barge tow line that must be as strong as steel cable, but can float on water and is not corroded by salt water. What material discussed in this chapter might be suitable?
What will be an ideal response?
The average distance from Earth to the Sun is _____
A) 1 AU B) 2 AU C) 3 AU D) 4 AU
A composite beam is made up of a 90 mm 3 160 mm wood beam (Ew 5 11 GPa) and a steel bottom cover plate (90 mm 3 8 mm, Es 5 190 GPa). Allowable stresses in wood and steel are 6.5 MPa and 110 MPa, respectively. The allowable bending moment about the z axis of the composite beam is most nearly:
(A) 2.9 kN?m
(B) 3.5 kN?m
(C) 4.3 kN?m
(D) 9.9 kN?m
How was the first asteroid discovered?
A. Newton inferred their existence by their gravitational influence on Jupiter. B. Kepler traced back the path of meteors to the Asteroid belt. C. Galileo saw it whiz by Jupiter. D. It collided with the Moon. E. Piazzi found it by searching for objects at the distance suggested by Bode's law.