John is conducting an experiment that involves melting ice cubes. Which of the following is most important for John to collect reliable data?
A. The outcome needs to be controlled.
B. An unbiased observer must witness the experiment.
C. Technology needs to be used to determine the results.
D. Only one variable should be tested during the experiment.
Answers: 2
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Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c. what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?
Answers: 1
John is conducting an experiment that involves melting ice cubes. Which of the following is most imp...
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