In an electrical circuit, the voltage across a resistor is directly proportional to the current running through the resistor. If a current of 18 amps produces 720 volts across a resistor how many volts would a current of 25 amps produce across an identical resistor?
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The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z