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uranmaximum [27]
3 years ago
7

Eddie set up a science experiment with plants. He bought three small tomato plants, all about the same size and height, and set

them all in his front window. He watered the first plant every day, the second plant every other day, and the third plant every third day, making sure to use the same amount of water each time. He planned to measure the height of each tomato plant after three weeks. What was the manipulated variable in Eddie's experiment?
Physics
1 answer:
Elza [17]3 years ago
8 0

Answer:

The frequency of watering

Explanation:

The manipulated variable in this case is the frequency of adding water to the experimental plants.

While the first plant can be said to have a watering frequency of a day, the second had a watering frequency of 2 days while the third plant had a watering frequency of 3 days.

The experiment must have been set up to determine the effects of frequency of watering on the growth of tomato plants.

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A)0.00966 N/C

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Explanation:

We are given;

Diameter of the metal ring; d = 4.3 cm

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Now, as a result of change in magnetic field, an emf will be induced in it. Thus, , electric field is induced and given by the formula :

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This gives;

E(2πr) = dB/dt(πr²)

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E = dB/dt × 2r

We are given;

E = 0.23 × 2(0.021)

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6 0
2 years ago
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Answer:

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3 years ago
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3 years ago
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