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kirill [66]
3 years ago
11

A student conducts an experiment to determine how the temperature of water affects the time for sugar to dissolve. In each trial

, the student uses a different amount of sugar and a different temperature of water.
What is wrong with this experimental design?
A. The student does not have a dependent variable.
B. The student changed too many variables.
C. The student needs to perform more trials.
D. The student did not change enough variables.
Physics
1 answer:
Sveta_85 [38]3 years ago
7 0
B- the student changed too many variables
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Answer:

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solution

we know lens formula that is

1/f = 1/v + 1/u     ....................1

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so from equation 1

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