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Physics, 24.08.2019 05:00 CassidgTab

Kate gathered three boxes of the same size made of different materials: glass, clear plastic, and aluminum painted black. she placed them on a window sill in the sun for an hour and then measured the warmth of the air in the box. in this experiment, the time of the hour is a(
a. constant
b. dependent variable
c. independent variable
d. control

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