10 POINTS !!! Why is it risky to build something whose natural frequency can be matched byexternal vibrations?

Answers

Answer 1
Answer:

It is risky to build something whose natural frequency is matched with external vibrations because of  ;  The effect of resonance

When an object constructed has a natural frequency which is equal to the frequency of a nearby external vibration, the amplitude of the vibration of the object will increase due to the resonance effect which occurs because the external frequency matches up with the natural frequency of the constructed object.

The negative effect of resonance is the increase in the amplitude of the vibration of the object which might lead to the partial or complete collapse of the constructed object.

Hence we can conclude that It is risky to build something whose naturalfrequency is matched with external vibrations because of  ;  The effect of resonance

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Answer 2
Answer:

Answer:Most objects have at least one natural frequency of vibration. If a nearby object vibrates at the same frequency, it can cause resonance. Resonance is an increase in amplitude of a vibration that occurs when external vibrations match an object's natural frequency.

Explanation:


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This is a process where two nuclei or particles interact to form different particles

What is definition of soil

Answers

Answer:

the upper layer of earth in which plants grow, a black or dark brown material typically consisting of a mixture of organic remains, clay, and rock particles.

Explanation:

Example-"blueberries need very acid soil"

Answer:

the upper layer of earth in which plants grow,

What happens to the solar energy that is not absorbed by earths surface?

Answers

Answer:

It is absorbed or reflected by clouds, gasses, and dust, or is reflected off of Earth's surface.

Explanation:

 

Final answer:

The solar energy that is not absorbed by Earth's surface is reflected back into space or absorbed by the atmosphere, contributing to the greenhouse effect.

Explanation:

The solar energy that is not absorbed by Earth's surface can be reflected, scattered, or absorbed by the atmosphere. Some of the solar energy is reflected back into space by clouds, particles in the atmosphere, and Earth's surface. This is known as albedo. The rest of the solar energy is absorbed by gases such as carbon dioxide and water vapor in the atmosphere.

This absorption of solar energy by the atmosphere contributes to the greenhouse effect, which helps to regulate Earth's temperature. The absorbed energy is re-emitted as heat, warming the lower layers of the atmosphere. This is why the Earth's surface is warmer than it would be without an atmosphere.

In summary, the solar energy that is not absorbed by Earth's surface is either reflected back into space or absorbed by the atmosphere, contributing to the greenhouse effect and warming the atmosphere.

Learn more about Solar energy here:

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What are the similarities between plant and animal cell?What are the differences between plant and animal cell?

Answers

they’re both eukaryotic cells

Explanation: Differences: Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane.

Similarities: Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements.

The subshell designations follow the alphabet after f. what is the first shell in which an h orbital would be allowed?

Answers

There are no h orbitals, the maximum filling orbital for the electronic configurations only go up to the f sub shell. This subshell contains a maximum number of 14 electrons of varying quantum energies, in their respective orbitals.

How many different ways does/could energy change form during its travels between the Sun and your stomach?

Answers

Energy will take the path from sun to stomach as sun's energy to chemical energy followed by thermal and mechanical energy.

Explanation:

The energy of the sun is in the from of chemical energy which is the ultimate basis of life on earth . The process of photosynthesis occurs to form a chemical compound named glucose. The food ingested is in polymer complex forms as protein, carbohydrate, fats etc which is broken into monomers for absorption in intestine and stomach.

The dietary compound has energy stored in their bonds as chemical energy.

So, from sun human consume chemical energy which is stored in food.

The energy even if consumed by eating meat is also chemical energy which is stored as potential energy.

The breakdown of food or chemical energy into monomers leads to release of thermal energy or heat to maintain optimum body temperature.

Chemical energy also gets converted to mechanical energy which allows functioning of vital organs and movement of body.

Of the following groups which contains the greatest number of species? crustaceans
mammals
plants
insects

Answers

Answer: Insects

Explanation:

The Arthropoda is the largest phylum in the animal kingdom because about 85 percent of all known species are arthropods, and insects alone make up about 75 percent of known species.

Arthropods are divided into the following classes:

- Crustaceans

- Insects

- Arachnids

- Myriapods

Thus, insects contains the greatest number of species

Answer: Insects.

Explanation:

Insects are largest group of invertebrates animal. They belong to phylum arthropoda and the are about 1 million or more. Insects have a pair of antenna, their body is cover with exoskeleton, they have three pairs of leg, their body is divided Into head , thorax and abdomen. Their eyes are bulged. They have pairs of wings. Examples are ants, bees, termites, flies, butterfly, grasshopper e.t.c.