A certain metal wire has a cross-sectional area of 1.0 cm2 and a resistivity of 1.7 × 10-8 ? ? m. How long would it have to be to have a resistance of 1.0 ??
A) 5.9 × 104 m B) 590 m C) 5.9 m D) 5.9 km E) 5.9 × 106 m
D
Physics & Space Science
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All quarks have 1/3 the electric charge of an electron
a. True b. False Indicate whether the statement is true or false
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A 650-N billboard worker stands on a 4.00-m scaffold weighing 600 N and supported by vertical ropes at each end. How far would the worker stand from one of the supporting ropes to produce a tension of 660 N in that rope?
a. 1.78 m b. 2.00 m c. 1.90 m d. 0.06 m e. 0.93 m
Physics & Space Science
The internal pressure of a fluid that gains speed
A) increases. B) remains unchanged. C) decreases.
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Lunar eclipses can occur only during a ________
A) third quarter moon B) first quarter moon C) new moon D) full moon
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