When you double the voltage in a simple electric circuit, you double _______.
A. the resistance
B. the current
C. both of these answers
D. neither of these answers
Answer: B. the current
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Consider two parallel wires carrying current in the same direction. Which one of the following statements to true concerning this situation?
a) The two wires will attract each other, even if no external magnetic field is applied to the wires. b) The two wires will repel each other, even if no external magnetic field is applied to the wires. c) The two wires will attract each other, only if an external magnetic field is applied to the wires. d) The two wires will repel each other, only if an external magnetic field is applied to the wires. e) The wires will be neither attracted nor repelled from each other when no external magnetic field is applied to the wires.
How many atoms of oxygen are contained in 44 g of carbon dioxide, CO2?
a. 3.01 × 10^23 b. 12.0 × 10^23 c. 6.02 × 10^23 d. None of these
The ____________________ is a measure of how many times larger the angular size of an object appears through a telescope
Fill in the blank(s) with correct word
An objects average density P is defined as the ratio of its mass to its volume. P = M/V. The earth's mass is 5.94 X 10^24 ks and its volume is 1.08 X 10^12 km^3. What is the earth's average density?
A. 5.50 X 10^3 Kg/M^3 B. 5.50 X 10^6 Kg/M^3 C. 5.50 X 10^9 Kg/M^3 D. 5.50 X 10^12 Kg/M^3