In what way could the Huygens probe be considered a first?
What will be an ideal response?
It made the first successful soft landing on a moon other than Earth's.
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To increase the room-temperature yield strength of a metal containing dislocations, it is necessary to introduce _________to dislocation motion.
Fill in the blank(s) with the appropriate word(s).
Meters: A galvanometer with a coil resistance of 40.0 ? deflects full scale for a current of 2.0 mA. What series resistance should be used with this galvanometer in order to construct a voltmeter that deflects full scale for 50 V?
A. 25 k? B. 27 k? C. 29 k? D. 31 k?
How much of the solar system's total mass is contained in the Sun?
A) about half B) about 90% C) about 95% D) about 99.8% E) exactly 100%
When is/was gravitational contraction an important energy-generation mechanism for the Sun?
A) only during solar minimum B) only during solar maximum C) when the Sun was being formed from a collapsing cloud of gas D) right after the Sun began fusing hydrogen in its core E) when the Sun transports radiation through the convection zone