How many structural isomers are shown here?
A) one
B) two
C) three
D) four
Answer: B
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The very first living organisms on the Earth were probably
A) chemoheterotrophs B) photoautotrophs C) photoheterotrophs D) chemoautotrophs
A parallel plate capacitor is connected to a battery and charged to voltage V. Leah says that the charge on the plates will decrease if the distance between the plates is increased while they are still connected to the battery. Gertie says that the charge will remain the same. Which one, if either, is correct, and why?
a. Gertie, because the maximum voltage is determined by the battery. b. Gertie, because the capacitance of the capacitor does not change. c. Leah, because the capacitance decreases when the plate separation is increased. d. Leah, because the capacitance increases when the plate separation is increased. e. Neither, because the charge increases when the plate separation is increased.
A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.If two slide projectors are connected in series across the same 120-volt source, the current drawn from the source remains at 6 amperes
a. True b. False Indicate whether the statement is true or false
At what speed are lengths contracted to half and times dilated by a factor of 2?
What will be an ideal response?