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e-lub [12.9K]
3 years ago
7

This is for a paper on the digestive system, but I can't seem to figure it out!

Advanced Placement (AP)
1 answer:
pishuonlain [190]3 years ago
5 0
The teeth breakdown food into smaller pieces. Saliva contains digestive enzymes that begin the mechanical process of digestion. The peristalsis pushes food to the esophagus.
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3. How many pounds of water could be raised in temperature 20°F by the 90% efficient burning of 30
frez [133]

Answer:

Raise =  1391.85\mu F

Explanation:

Given

Temperature = 20^{\circ} F

Gas = 30ft^3

Efficiency = 90\%

Required

Determine the pounds of water

1031BTU = 1ft^3 of water

1\mu F = 20BTU - The energy to raise 1 pound of water by 20F

The raise in pounds is then calculated as:

Raise = Efficiency * Energy * Volume(gas) *  cubic\ of\ water

This gives:

Raise = 90\%* \frac{1\mu F}{20BTU} * 30ft^3 *  \frac{1031BTU}{1ft^3}

Raise = 90\%* \frac{1\mu F}{20BTU} * 30 *  \frac{1031BTU}{1}

Raise = 90\%* \frac{1\mu F}{20} * 30 *  \frac{1031}{1}

Raise = 90\%* \frac{1\mu F}{20} * 30 *  1031

Raise = 90\%* \frac{1\mu F}{20} * 30930

Raise = 90\%* 1\mu F * 1546.5

Raise = 1\mu F * 1391.85

Raise =  1391.85\mu F

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3 years ago
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