| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.78 |
| Score | 0% | 56% |
The __________ nervous system regulates involuntary activity in the heart, stomach, and intestines.
peripheral |
|
autonomic |
|
somatic |
|
central |
Part of the peripheral nervous system, the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines.
The ozone layer is in which of Earth's atmospheric layers?
stratosphere |
|
mesosphere |
|
troposphere |
|
thermosphere |
The stratosphere is just above the troposphere and is stratified in temperature with warmer layers higher and cooler layers closer to Earth. This increase in temperature is a result of absorption of the Sun's radiation by the ozone layer.
Which of the following is the formula for work?
\(W = {\vec{F} \over \vec{d} }\) |
|
\(W = {{F}\over{d}}\) |
|
\(W = \vec{F}\vec{d}\) |
|
\(W = {F}{d}\) |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meter (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)
Convert -20C° to F°.
78 |
|
-4 |
|
-36 |
|
36 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(-20) + 32\)
\(F° = {-180 \over 5} + 32\)
\(F° = -36 + 32 = -4\)
During digestion, after proteins are broken down where does the undigested food go next?
stomach |
|
small intestine |
|
esophagus |
|
large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.