If an electric toaster operating on 120 volts draws a current of 6 amperes, the resistance of the toaster is 20 ohms
Indicate whether the statement is true or false
T
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Suppose you live at latitude 30°S. Which star is circumpolar in your sky?
Consider the following data for four stars: Star RA Dec. Spica 13hr24m.1 -11°20' Deneb 20hr39m.7 +45°06' Sirius 6hr44m.2 -16°42' Alpha Centauri 14hr38m.4 -60°46' A) Alpha Centauri B) Deneb C) Spica D) Sirius
If the magnitude of the cross product of two vectors is one-half the dot product of the same vectors, what is the angle between the two vectors?
What will be an ideal response?
Which of the following statements is false?
a. The majority of surface rocks are igneous. b. The study of rocks is called petrology. c. Rocks are classified as igneous, sedimentary, or metamorphic. d. Rocks are composed of one or more minerals.
Four moles of nitrogen gas are contained in an enclosed cylinder with a movable piston. If the molecular mass of nitrogen is 28 u, how many grams of nitrogen are present?
a. 0.14 c. 42 b. 56 d. 112