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Elina [12.6K]
2 years ago
11

Can someone please answer this, ill give you brainliest Would be very appreciated.

Physics
2 answers:
Rainbow [258]2 years ago
3 0

Answer:

See below ~

Explanation:

A decrease in the ice caps causes a(n) increase in the absorption of sunlight. This cause the global temperature to rise causing more ice caps to melt. As more ice caps melt, the temperature rises. This is an example of a negative feedback loop.

Elena-2011 [213]2 years ago
3 0

A decrease in the ice caps causes a(n) <u>increase</u> in the absorption of sunlight. This causes the global temperature to <u>rise</u> causing more ice caps to melt. As more ice caps melt, the temperature <u>rises</u>. This is an example of a <u>negative</u><u> </u>feedback loop.

The options are followed by

  1. Increase
  2. Rise
  3. rises
  4. negative
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What amount of heat is required to raise the temperature of 200 g of water by 15°C (the specific heat of water is 1 cal/g°C)
Sergeeva-Olga [200]

Answer:

Heat energy required (Q) = 3,000 J

Explanation:

Find:

Mass of water (M) = 200 g

Change in temperature (ΔT) = 15°C

Specific heat of water (C) = 1 cal/g°C

Find:

Heat energy required (Q) = ?

Computation:

Q = M × ΔT × C

Heat energy required (Q) = Mass of water (M) × Change in temperature (ΔT) × Specific heat of water (C)

Heat energy required (Q) = 200 g × 15°C × 1 cal/g°C

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An important dimensionless parameter in certain types of fluid flow problems is the Froude number defined as V/√g.l where V is a
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Answer:

1.24611

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Fr=\dfrac{V}{\sqrt{gL}}\\\Rightarrow Fr=\dfrac{10}{\sqrt{32.2\times 2}}\\\Rightarrow Fr=1.24611

Converting to SI units

10\ ft/s=10\times \dfrac{1}{3.281}

32.2\ ft/s^2=32.2\times \dfrac{1}{3.281}

2\ ft=2\times \dfrac{1}{3.281}

Fr=\dfrac{V}{\sqrt{gL}}\\\Rightarrow Fr=\dfrac{10\times \dfrac{1}{3.281}}{\sqrt{32.2\times \dfrac{1}{3.281}\times 2\times \dfrac{1}{3.281}}}\\\Rightarrow Fr=1.24611

The Froude number is 1.24611

The Froude number is equal. The Froude number is dimensionless as the units cancel each other. In order for this to happen the units used need to be consitent either imperial or SI.

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Now we can use the following formula to calculate the distance covered by Cole and the sled before stopping:
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Answer:

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