2 years ago

True or false cells of humans and plants are same.

Physics

1 answer:

timama [110]2 years ago

4 0

False, we lack cell walls whereas they have cell walls.

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Alexeev081 [22]

The average rate at which the cable does work is 294,000 J/s.

The given parameters:

mass, m = 3000 kg
height, h = 200 m
time of motion, t = 20 s

The average rate at which the cable does work is calculated as follows;

$P = \frac{E}{t} \\\\P = \frac{mgh}{t} \\\\P = \frac{3000 \times 9.8 \times 200}{20} \\\\P = 294,000 \ J/s$

Thus, the average rate at which the cable does work is 294,000 J/s.

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Energy is the capacity of doing work

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Energy input remains constant and voltage remains the same in a circuit, but current decreases. Which must be happening?

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A) the resistance is increasing

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