________ is the most important quality of an astronomical telescope.

A. Magnification
B. Rigidity
C. Ability to see at night
D. Resolving power


Answer: D

Physics & Space Science

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Increasing the voltage across the two plates of a capacitor will produce what effect on the capacitor?

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What is the impedance of an ac series circuit with 12.0 ? of resistance, 15.0 ? of inductive reactance, and 10.0 ? of capacitive reactance?

A) 21.9 ? B) 13.0 ? C) 11.6 ? D) 27.7 ?

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For chlorine gas, the van der Waals constants are: a = 0.658 J?m3/mol2, and b = 5.62 × 10-5 m3/mol. A 3.0-L tank contains 10.0 moles of chlorine gas at a temperature of 625 K. What is the pressure in the container?

A) 14.0 MPa B) 13.5 MPa C) 17.3 MPa D) 11.0 MPa E) 18.2 MPa

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A 15-mF capacitor is charged to 40 V and then connected across an initially uncharged 25-mF capacitor. What is the final potential difference across the 25-mF capacitor?

a. 12 V b. 18 V c. 15 V d. 21 V e. 24 V

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