Two equal-size vectors at right angles to each other have a resultant that is
A) equal to that of either vector.
B) ?2 the length of either vector.
C) twice the length of either vector.
Answer: B
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Which component of Earth's geology is believed to have been largely responsible for the long-term climate stability that has allowed life to evolve?
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The internal energy of an ideal gas does not depend on the pressure
Indicate whether the statement is true or false
A 2.0-?F capacitor that is initially uncharged is charged through a 50-k? resistor. How long does it take for the capacitor to reach 90% of its full charge?
A) 0.90 s B) 2.2 s C) 0.23 s D) 2.3 s
An astronaut measures her mass by means of a device consisting of a chair attached to a large spring. The period of oscillation she undergoes when set into motion is used to determine her mass. If her mass together with the chair is 172 kg and the time required for her to undergo 10 full oscillations is 27 seconds, what is the spring constant?
A. 400 N/m B. 931 N/m C. 148 N/m D. 467 N/m