Answer:
Anything in an experiment that remains unchanged.
Explanation:
An example could be the temperature of the laboratory room. If there is something that has an effect on an experiment that is not variable, it is a constant. Another constant could be, say, if you were doing calculations with the same amount and kind of fluid throughout the experiment, then that fluid would also be a constant.
Since this is a right-angled triangle,
Use tan 30 to find BC
Use tan 75 to find AC
Then subtract both answers to find AB
The right answer is D, the aplitude of summaric wave.
Since the anode dissolves and goes to the cathode. The object to be electroplated is kept at the cathode.
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