The element rubidium (Rb, atomic number 37) is in Group IA of the periodic table, and the element chlorine (Cl, atomic number 17) is in Group VIIB of the periodic table. RbCl should have ______________bonding.
Fill in the blank(s) with the appropriate word(s).
ionic
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Whenever the alternating current frequency in a series RLC circuit is halved,
A. the inductive reactance is doubled and the capacitive reactance is halved. B. the inductive reactance is doubled and the capacitive reactance is doubled. C. the inductive reactance is halved and the capacitive reactance is halved. D. the inductive reactance is halved and the capacitive reactance is doubled. E. the reactance of the circuit remains the same.
Carnot Engine: An ideal Carnot engine extracts 529 J of heat from a high-temperature reservoir during each cycle, and rejects 225 J of heat to a low-temperature reservoir during the same cycle. What is the efficiency of the engine?
A. 0.57 B. 1.35 C. 2.35 D. 0.7
Which statement about stellar populations is correct?
a. Population I stars are found in the disk and halo; Population II stars are found in the bulge. b. Population I stars are found in the halo; Population II stars are found in the disk and bulge. c. Population I stars are found in the disk; Population II stars are found in the bulge and halo. d. Population II stars are found in the disk; Population I stars are found in the bulge and halo. e. Population I stars are found in the bulge; Population II stars are found in the disk and halo.
A 60-kg (including the passenger) sled is subject to a net force of 20 N pushing in the direction of the sled's motion as it is moving over a horizontal surface for a distance of 11 m after having started from rest. At this point the sled is released as it starts down a 10.0° incline. However, the snow is not very deep, and the sled stops after having moved an additional 35 m. What is the work
done by friction while the sled is on the incline? a. –3.6E+3 J b. –3.8E+3 J c. –3.4E+3 J d. –2.0E+4 J