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gtnhenbr [62]
4 years ago
13

Why are chemical changes considered unseen?

Physics
1 answer:
Bogdan [553]4 years ago
7 0
They occur at atomic level, changing the structure of the object.
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What is the relationship between chromatics and<br> chromosomes? (Make it a short answer )
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Dimas reads that it takes 270 N to lift a firefighter's equipment. If a firefighter does 5400 J of work carrying the equipment u
Alex787 [66]

Answer:

h = 20 m

Explanation:

Given that,

Force to lift a firefighter's equipment, F = 270 N

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We need to find the height climbed by the firefighter. We know that,

Work done, W = Fd

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d=\dfrac{W}{F}\\\\d=\dfrac{5400}{270}\\\\d=20\ m

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3 years ago
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In your own words, explain the effects of changes in Earth's magnetic field over time.
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3 years ago
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Which best describes longitudinal waves?
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The small piston of a hydraulic lift, has an area of 0.01m2. If a force of 250N is applied to the small piston if it has an area
postnew [5]

Answer:

Explanation:

Given that,

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F1 / 0.01 = 5000

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3 years ago
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