Answer:
2.52 x
J
Explanation:
The energy given off by the microwave can be determined by the application of Planck's energy formula:
E = hf
where: E is the required energy, h is Planck's constant (6.626 x ![10^{-34}](https://tex.z-dn.net/?f=10%5E%7B-34%7D)
Kg/s), and f is the frequency (3.8 x
Hz).
So that;
E = 6.626 x
x 3.8 x ![10^{10}](https://tex.z-dn.net/?f=10%5E%7B10%7D)
= 2.51788 x ![10^{-23}](https://tex.z-dn.net/?f=10%5E%7B-23%7D)
Therefore, the energy released by the wave is 2.52 x
J.
Dry air is a mixture of nitrogen, oxygen, carbon dioxide etc.
air is a mixture of gases 78% nitrogen an 21% oxygen and other components.
Answer:
A
Explanation:
Autotrophs utilize the energy from sunlight to reduce carbon dioxide to carbohydrates (glucose). The energy from the sunlight is used to split water into H+ and O2- and the H+ used in the reduction process. The labeled carbon in the carbon dioxide will, therefore, be incorporated by the autotrophs in the carbohydrates made in photosynthesis.