| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.68 |
| Score | 0% | 54% |
-40°F is how many °C?
\({40 \over 9}\) |
|
-40 |
|
\(-{40 \over 9}\) |
|
-8 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (-40 - 32)\)
\(C° = {5 \over 9} (-72) = {{-72 \times 5} \over 9}\)
\(C° = {-360 \over 9}\)
\(C° = -40\)
During digestion, after proteins are broken down where does the undigested food go next?
esophagus |
|
large intestine |
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small intestine |
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stomach |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Which of the following is not a terrestrial planet?
Venus |
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Jupiter |
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Earth |
|
Mercury |
The four planets closest to the Sun (Mercury, Venus, Earth, and Mars) are called terrestrial (Earth-like) planets because, like the Earth, they're solid with inner metal cores covered by rocky surfaces.
The __________ nervous system regulates involuntary activity in the heart, stomach, and intestines.
autonomic |
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peripheral |
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somatic |
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central |
Part of the peripheral nervous system, the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines.
Scalar quantities are fully described by which of the following?
a direction only |
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a magnitude and a direction |
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a magnitude only |
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a magnitude and a polarity |
Velocity and displacement are vector quantities which means each is fully described by both a magnitude and a direction. In contrast, scalar quantities are quantities that are fully described by a magnitude only. A variable indicating a vector quantity will often be shown with an arrow symbol: \(\vec{v}\)