A capacitor C1 = 11.8 ?F is connected in parallel with a capacitor C2 = 5.4 ?F, and a potential difference of 166 V is applied across the pair. What is the equivalent capacitance of the pair?
Answer: 1.7210^-5
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A. The spring force to the force used to compress the spring B. Change of the length of the spring to gravity C. Change of the length of the spring to the metal the spring is made of D. The spring force to the change in the length of the spring
In any star cluster, stars with lower masses greatly outnumber those with higher masses
Indicate whether the statement is true or false
The tail of a comet ________.
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Which statement about stellar motion is incorrect?
A) In general, the closer a star is, the more its proper motion. B) The radial velocity is measured by the Doppler shift. C) The transverse velocity is measured by the proper motion and the distance. D) Like parallax, proper motion is measured over intervals of exactly six months. E) The Pythagorean theorem relates space, transverse, and radial velocities.