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3 years ago

How can radio-frequency produce heat?

Biology

2 answers:

netineya [11]3 years ago

7 0

Answer:

Radiofrequency (RF) radiation, which includes radio waves and microwaves, is at the low-energy end of the electromagnetic spectrum. It is a type of non-ionizing radiation. ... If RF radiation is absorbed in large enough amounts by materials containing water, such as food, fluids, and body tissues, it can produce heat.

stealth61 [152]3 years ago

3 0

Answer:

Radio frequency is short for RF, which is a kind of high frequency alternating current electromagnetic wave with frequency range from 3k hz-3k GHz

Because the frequency is high, so the molecular movement speed is fast, and the physical explanation of the heat of the object 100 is its internal molecular movement speed, the use of radio frequency energy to make the molecular high speed movement of course will achieve the purpose of heating

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Sanjay and his family want to cut back on their use of non-renewable resources at home. They are thinking of an alternate way to

Elden [556K]

The correct answer is letter B, burning wood. This is not a renewable resource of energy as its by-product involves the release of greenhouse gases that can still be harmful to the atmosphere or to the environment in general. All the other choices are good sources of renewable power because they harness the power of naturally occurring materials found in their space.

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3 years ago

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Two test tubes are filled with a solution of bromthymol blue. A student exhales through a straw into each tube, and the bromthym

AlekseyPX

Explanation:

The plant is utilizing CO2 in photosynthesis

Photosynthesis produces glucose and O2 from inorganic CO2, light energy and water.

6CO2 + 6H20 + (energy) → C6H12O6 + 6O2

Bromothymol blue, an acid indicator, goes from blue to yellow when reacting with acid. The color change in sunlight confirmed the use of CO2, dissolved within the solution as carbonic acid- its removal from the solution makes the more basic, and the solution goes from yellow (acidic) to blue (alkaline).

CO2 + H2O ↔ H2CO3

Further Explanation:

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released.

Occuring in several complex steps, photosynthesis is a rate limited reaction, it depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent. Water supplies chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II.

Additionally,

water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent; it reduces the molecule NADP to NADPH by providing H+ ions and produces molecules of the energy storage molecule ATP through an electron transport chain.
This occurs in the thykaloids, where pigment molecules like chlorophyll reside.
Later, in dark reactions, NADP and NADPH are used in the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules. These store energy in their bonds, which can be released in respiration in the mitochondria.

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’s cycle via the oxidization of pyruvate( through the process of glycoysis). The electron transport chain, in which oxygen functions as the terminal electron acceptor occurs in both plants and animals.

Learn more about photosynthesis at brainly.com/question/4216541

Learn more about cellular respiration at brainly.com/question/11203046

Learn more about cellular life at brainly.com/question/11259903

#LearnWithBrainly

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3 years ago

For each biomolecule below, match the benefit provided to the body

Snowcat [4.5K]

Answer:

1. Protein - build lean muscle and strengthen tendons

2. Lipids - insulation and long-term energy

3. Carbohydrates - provides quick, easily digested energy

4. Nucleic Acids - repair and replicate DNA and RNA

Explanation:

a. Think of protein as what helps your muscles grow and strengthen

b. Think of lipids as fats (blubber, the extra fat, helps insulate seals from the cold)

c. carbohydrates are found in starch and bread products, and are used to help build up energy prior to marathons.

d. nucleic acids - think of nucleus; it is where genetic material is located, and also where DNA and RNA is located.

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2 years ago

What gases is contributing the most to causing global warming?

Shtirlitz [24]

Answer:(2010) analysed how individual components of the atmosphere contribute to the total greenhouse effect. They estimated that water vapor accounts for about 50% of Earth's greenhouse effect, with clouds contributing 25%, carbon dioxide 20%, and the minor greenhouse gases and aerosols accounting for the remaining 5%.

Explanation:

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2 years ago

Which type of rock is formed from cooling molten rock?

Sholpan [36]

Igneous. Igneous forms when lava cools off. :)

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2 years ago

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