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OLga [1]
3 years ago
6

Over the past 150 years, what has happened to the amount of forest cover in Minnesota?

Physics
1 answer:
Airida [17]3 years ago
4 0
I think D. None of the above

I think that it
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There are eight planets in our Solar System.

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Salt is now added to the water in the bucket, increasing the density of the liquid. what happens to the tension in the string ?
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The question involves a ping-pong ball that is held submerged in a bucket by a string attached to the bottom of the bucket.

The answer is the tension of the string will increase. This is because making the water salty increases its density, and consequently, increases its buoyancy. This is why sea water is more buoyant than fresh water. Therefore the ping pong is pushed more upwards by the water when salt is added than initially. This gives the string more tension.


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6. Two light bulbs are designed for use at 120 V and are rated at 75 W and 150 W. Which light bulb has the greater filament resi
Nonamiya [84]

\\ \bull\tt\longrightarrow P=\dfrac{V^2}{R}

  • P is power
  • R is resistance

\\ \bull\tt\longrightarrow R=\dfrac{V^2}{P}

Hence

\\ \bull\tt\longrightarrow R\propto V

\\ \bull\tt\longrightarrow R\propto \dfrac{1}{P}

  • Therefore if power is low then resistance will be high.

The first bulb has less power hence it has greater filament resistance.

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Volume of an block is 5 cm3. If the density of the block is 250 g/cm3, what is the mass of the block ?​
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