3 years ago

Seasonal variation in Earth's climate are caused by

1 answer:

3 0

B. Earth’s tilt

Earth’s tilt exposes different parts of the earth to varying degrees of sunlight throughout the year, causing seasons.

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The heat of fusion for water at its normal freezing or melting temperature is L=333 kJ/kg. How much water remains unfrozen after

Amiraneli [1.4K]

<span>50.2 kJ = 333 kJ/kg * mass of water mass of water is 0.15075075075075075075075075075075 kg therefore mass of unfrozen water is 0.10924924924924924924924924924925 kg</span>

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3 years ago

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hichkok12 [17]

Answer: B

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3 years ago

Perform the following calculation and report the answer with the correct number of significant figures.

Paul [167]

Answer:

81.72 +0.73=82.45

Explanation:

you need to add it

81.72

+0.73

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2 years ago

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Which is a possible heat capacity for a bomb calorimeter?

Leona [35]

B. i took the test and got it right

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1 year ago

Your boss tells you that water at 68 F is flowing in a cooling tower loop at a rate of 600 gpm, in an 8-inch inside diameter pip

avanturin [10]

Explanation:

The volumetric flow rate of water will be as follows.

q = $600 gpm \times \frac{0.000063 m^{3} s^{-1}}{1 gpm}$

= 0.0378 $m^{3}/s
$

Diameter = $8 in \times \frac{0.0254 m}{1 in}$

= 0.2032 m

Relation between area and diameter is as follows.

A = $\frac{\pi}{4} \times D^{2}$

= $\frac{3.14}{4} \times (0.2032 m)^{2}$

= 0.785 x 0.2032 x 0.2032

= 0.0324 $m^{2}$

Also, q = A × V

or, V = $\frac{q}{A}$

= $\frac{0.0378 m^{3}/s}{0.0324 m^{2}}$

= 1.166 m/s

As, viscosity of water = 1 cP = $10^{-3}$ Pa-s

Density of water = 1000 $kg/m^{3}$

Therefore, we will calculate Reynolds number as follows.

Reynolds number = $\frac{D \times V \times density}{viscosity}$

= $\frac{0.2032 m \times 1.166 m/s \times 1000}{10^{-3}}$

= 236931.2

Hence, the flow will be turbulent in nature.

Thus, we can conclude that the Reynolds number is 236931.2 and flow is turbulent.

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3 years ago