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Elanso [62]
3 years ago
8

Why can't the teacher test the amount of water and the amount of sunlight in the same experiment? The plants would not grow At t

he end, he would not know which caused the plants to grow differently The plants would grow too fast Actually, he can test both things in the same experiment
Physics
1 answer:
iren [92.7K]3 years ago
6 0

Answer:the answer is a

Explanation:

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A pure substance that cannot be broken down into any other substances by chemical or physical means is a (n)
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It means it is an element.
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It took a bulldozer 62,000 J of work to move a rock 30 m. It took 5 minutes. How much force did the bulldozer have to apply?
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Answer:

A (2066,6 N)

Explanation:

Use the Work formula

62.000J = F . 30

62.000/30 = 2066,6 N

The amout of time it took to move the rock doesn´t matter at all.

It is called a distraction variable, We don´t need it to solve the problem it is there just to confuse.

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Explanation :

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A bulldozer and a Mini Cooper are involved in a head-on collision. Which one experiences a greater force
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Answer:

The mini Cooper will experience the greater force

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A small 12.00 g plastic ball is suspended by a string in a uniform, horizontal electric field. If the ball is in equilibrium whe
notsponge [240]

Answer:

Q = \frac{0.068}{E}

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Explanation:

As we know that plastic ball is suspended by a string which makes 30 degree angle with the vertical

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while weight of the ball is vertically downwards

so here we have

QE = F_x

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since string makes 30 degree angle with the vertical so we will have

tan\theta = \frac{F_x}{F_y}

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Q = \frac{0.068}{E}

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