A dot is drawn every second to show the position of a toy car coasting up a ramp. Which statement best describes the motion of t
he car?
It is slowing down because less distance is covered every second.
The car is stationary, then slides back down because the ramp is so steep that it can’t coast up at all.
It is speeding up because more distance is covered every second.
The speed is constant because the distance between the dots remain the same.
It is slowing down because less distance is covered every second.
The car is stationary, then slides back down because the ramp is so steep that it can’t coast up at all.
It is speeding up because more distance is covered every second.
The speed is constant because the distance between the dots remain the same.
1 answer:
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Answer:
The correct answer is C and Engelmann conducted this experiment to prove relationship between algae and the rate of photosynthesis.
Explanation: First we must talk about 3 facts:
1) Prism scatters the white light into different wavelengths.
2) Photosynthesis, 6 carbon dioxide and 6 water molecules are consumed and 6 oxygen and 1 sugar molecule is synthesized using light energy.
6CO2 + 6H2O → C6H12O6 + 6O2
3) Aerobic bacteria breaks down sugar while using oxygen and produces water and carbon dioxide in simplified terms.
So with this experimental setup a researcher can understand the rate of the photosynthesis by increased accumulation of aerobic bacteria near algae in certain wavelengths since they uses oxygen and tend to move close to the oxygen source (<u>see figure</u>). In this experiment there are no ways to measure heat (B), there is no known relation between wavelength of light and aerobic respiration since it can happen even in the dark (A) and finally there are no ways to measure carbon dioxide (D).
