When ice melts, its temperature increases
Indicate whether the statement is true or false
F
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The statement, "There are regions beneath Earth's crust that will always be beyond the reach of scientific investigation" is
A) a fact. B) speculation. C) a hypothesis. D) a scientific statement. E) a theory.
The coefficient of linear expansion of ordinary glass is three times that of Pyrex glass. An ordinary glass rod and a Pyrex glass rod of equal lengths at room temperature are dropped into boiling water. The change in length of the ordinary glass rod will be 3 times the change in length of the Pyrex glass rod
a. True b. False Indicate whether the statement is true or false
What behavior do galactic rotation curves exhibit to suggest the existence of dark matter in an extended halo?
a. Small velocities are seen at large distances from the galactic center. b. Small velocities are seen at distances close to the galactic center. c. Large velocities are seen at large distances from the galactic center. d. Large velocities are seen at distances close to the galactic center.
A 0.500-H inductor is connected into a 110 V rms 60.0-Hz voltage source, with an ammeter in series. What is the rms value of the current through the inductor?
A. 0.189 A (rms) B. 0.292 A (rms) C. 0.584 A (rms) D. 1.19 A (rms) E. 0.093 A (rms)