To get to school, Alice walks 0.25 mile to the bus stop. She takes the bus 1.2 miles to the train station. She takes the train 13 miles and walks the remaining 0.17 mile to work. How far is her commute?
A) 14.6 miles
B) 10 miles
C) 15 miles
D) 14.62 miles
E) 14.620 miles
C
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First Law of Thermodynamics: An ideal gas undergoes the process a?b?c?a shown in the pV diagram. The heat gained by the gas in process a?b is 546 J, while in process b?c the gas loses 62.0 J of heat. In process a?b the gas performs 310 J of work, while in process c?a 223 J of work is done on the gas. How much heat is gained by the gas in process c?a?
A. -397 J B. -62 J C. 223 J D. 18 J E. -236 J
Our eyes are not very good at seeing
A) motion at our peripheries. B) differences in brightness. C) color in dim light. D) all of the above E) none of the above
When a capacitor is fully charged, the current through the capacitor in a direct-current circuit is
a. zero. b. at its maximum value. c. equal to the current in a resistive circuit in parallel with the capacitor circuit. d. greater than the current in a resistor that is farther from the battery than the capacitor. e. zero if it is the only capacitor, but maximum if there is another capacitor in series with it.
For an exothermic reaction, the energy barrier is ______________ on the reactant side than on the product side
a. smaller b. not different in size c. greater