| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.87 |
| Score | 0% | 57% |
Which of the following is the formula for power?
\(P = \vec{w}t\) |
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\(P = w t\) |
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\(P = {\vec{w} \over t}\) |
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\(P = {w \over t}\) |
Power is the rate at which work is performed or work per unit time: \(P = {w \over t}\) and is measured in watts (W).
In the water cycle, infiltration is most closely related to:
runoff |
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oceans |
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water table |
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rivers |
The water then accumulates as runoff and eventually returns to bodies of water or is absorbed into the Earth (infiltration) and becomes part of the water table, an underground resevoir of fresh water.
Which of the following is the narrowest classification of life?
species |
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genus |
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family |
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domain |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.
During digestion, where is digested food absorbed into the blood stream?
small intestine |
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stomach |
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large intestine |
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pancreas |
The small intestine is where most digestion takes place. As food travels along the small intestine it gets broken down completely by enzymes secreted from the walls. These enzymes are produced in the small intestine as well as in the pancreas and liver. After the enzymes break down the food, the resulting substances are then absorbed into the blood via capillaries in the small intestine walls.
Convert 5C° to F°.
37 |
|
27 |
|
41 |
|
-23 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(5) + 32\)
\(F° = {45 \over 5} + 32\)
\(F° = 9 + 32 = 41\)