Which of the following is a strong acid?
a. Citric acid
b. Nitric acid
c. Phosphoric acid
d. Acetic acid
b
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A 110-V hair dryer is rated at 1200 W. What current will it draw when operating from a 110-V electrical outlet?
A) 90 mA B) 1.0 A C) 5.0 A D) 11 A E) 14 A
The fact that the Earth has moved along its orbit in the time it took to rotate once is the reason for
A) the position of the Celestial Equator. B) precession. C) the difference between solar and sidereal time. D) Earth's 23.5-degree tilt. E) seasons.
In mechanics, physicists use three basic quantities to derive additional quantities. Mass is one of the three quantities. What are the other two?
a. length and force b. power and force c. length and time d. force and time
Fair weather can usually be expected with the approach of a
A) low pressure system. B) high pressure system.