Complete Question
The Complete Question is attached below
We have that the Cartesian components of tension
is
From the Question we are told that



Generally the equation for
is mathematically given as

Where

Therefore



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Answer:
TIME he applied the fertilizer to each plant
Explanation:
Independent variable in an experiment is the variable that is subject to change or manipulation by the experimenter. In this experiment, Bob wanted to investigate the effects of plant fertilizer. Bob sets up the experiment by applying the fertilizer to each plant at DIFFERENT TIMES i.e. plant 1-every morning, plant 2-once a week, plant 3-never.
Based on this, it is obvious that the independent or manipulated variable is the TIME at which he applied the fertilizer. On the other hand, the dependent or measured variable is the height of the plants.
Gravity is proportional to its mass<span> and </span>distance between<span> it and another </span><span>object</span>
The answer is m/s hope it helps