A famous celebrity has an extreme security system for their estate. The security system includes sensors in the ground as well as on the sides of the buildings. A loud truck drives down the road entering the estate. There is a sensor in the ground and another on the side of the security guard’s shed. If both sensors are 100m from the truck, which sensor will pick up the noise of the truck first and why?

A.
Guard Shed - The sensor on the security guard’s shed will detect the sound first because the sound is traveling through the air and sound will travel fastest through a gas.

B.
Ground - The sensor in the ground will detect the sound first because the sound is traveling through the dirt and sound will travel fastest through a solid.

C.
Same time - Because the sound is traveling through both the ground and the air at the same time, it will reach both the shed and the ground sensor at the same time.

D.
Neither sensor - 100m is too far for the sound to travel. Neither sensor will pick up the sound of the truck until it is closer to them.

Answers

Answer 1

Answer:

B. Ground - The sensor in the ground will detect the sound first because the sound is traveling through the dirt and sound will travel fastest through a solid.

Explanation:

Sound wave is an example of mechanical wave, which means sound waves require a medium to travel through. However, how fast a sound travels is dependent on the kind of medium it travels through. Sound travels fastest via a SOLID medium, then liquid and slowest through gases.

According to this question, sensor in the ground and side of the security guard’s shed were placed in an estate owned by a famous celebrity. A loud truck, then, drives down the road entering the estate.

Based on the principles of sound eaves movement, the sound from the truck will be picked by the sensors in the GROUND first because the sound is traveling through the dirt and sound will travel fastest through a solid.


Related Questions

Cholesterol is synthesized by all animal cells and is an essential structural component of animal cell membranes. Cholesterol is the most common steroid and is mainly synthesized in the liver. Cholesterol also serves as a precursor for several important biological compounds including all, EXCEPT: A) insulin B) vitamin D C) bile salts D) testosterone

Answers

the answer is insulin. because the precursor for insulin is called pro insulin

Cholesterol does not serve as the precursor for insulin. So the correct option is A.

What is cholesterol?

Cholesterol is a wax-like substance. Cholesterol is considered to be bad among the general public but it is not inherently “bad.” Our body needs for building cells and making vitamins and several other hormones. Cholesterol levels, in excess, can pose a problem.

Cholesterol can come from two sources. These are synthesized by the liver and from foods from animals. The liver produces all the required cholesterol but the remainder is obtained from foods. For example, meat, poultry, and dairy products of them contain dietary cholesterol.

These are the same foods that are also high in saturated fats and trans fats. These fats cause the liver to make more cholesterol than required or more than it normally does. This added production of cholesterol, for some people, means they go from a normal level of cholesterol level to unhealthy level of cholesterol.

Therefore the correct option is A.

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HELP YALL I NEED IT QUICKKKKK Hybrid seeds are deliberately crossbred for particular traits, such as growth pattern or disease resistance. They have been hand-pollinated and are patented, often sterile, and genetically identical within food types. These plants are usually grown in a monocultural environment and are cultivated for mass production and sale. They must be sturdy to withstand mechanical picking and cross-country shipping. They do not compare to the quality and taste of heirloom plants, but they do produce large, healthy fruit that appeals to most shoppers. Unlike heirloom seeds, if one saves a hybrid seed, one will not get the same plant again.


Which statement can be removed and not affect the excerpt’s reliability?

Answers

Answer:

Unlike heirloom seeds, if one saves a hybrid seeds, one will not get same plant again.

Explanation:

Hybrid seeds they are cross pollinated. It is the main contributor in agriculture.

They does not reproduce so they do not save seeds from hybrids.

Heirlooms are open pollinated. Thy can be harvested and replanted and it can be grown year after year.

Answer:

hey what do you call a deer with no eyes

Explanation:

no idear

what is an example of a question someone might ask to start a descriptive investigation?

Answers

Explanation:

where were you last night and what we're you wearing

1. Inferring This activity incorporates information from Chapters 12
and 13. How are these two chapters related?

Answers

9 + 10 is not 21 got that?

how are proteins made in animals and humans

Answers

Answer:

Through protein synthesis of course...

Explanation:

DNA and RNA do many steps such as translation, transcription, and more to form protein codons and code them into amino acids. Then, thousands of amino acids are oined together to make proteins, which regulate body function and catalyze chemical reactions (enzymes). Ribosomes are also involved in this action. To make proteins, nitrogen is needed for the plant to use, and that comes mainly from nitrate ions in the soil, and gets into the plant by active transport.

7. What is the water vapor concentration at the tropopause?

Answers

Answer:

99 %

The troposphere contains 99 % of the water vapor in the atmosphere. Water vapor concentrations vary with latitude. They are greatest above the tropics, where they may be as high as 3 %, and decrease toward the polar regions.

Explanation:

hope this helps <3

A consequence of "yo-yo" dieting is that

A. the body will actually store more fat around the waist.
B. a person will develop allergies to certain foods.
cholesterol levels will increase.
D. the chances of developing diabetes will increase.

Answers

Answer:

It's ( A )

The body will actually store more fat around the waist.

Find the number of atoms of each element.
Ca(OH2)3
Ca:
0:
H:
please!!!

Answers

Explanation:

Calcium Hydroxide has three atoms 5 atoms in each molecule.

One calcium atom

Two oxygen atoms

Two hydrogen atoms

So total 5NA. present in NA molecules.......

Using the image below identify each structure by matching the diagram label with the name of the organelle.

Cytoplasm


Nuclear Pores


Chromatin


Rough Endoplasmic Reticulum


Cell Membrane


Golgi Body


Nuclear Envelope


Cell Wall


Smooth Endoplasmic Reticulum


Nucleus


Mitochondria


Chloroplast


Vacuole


Microtubule


Nucleolus


Ribosome

1.
Structure 1

2.
Structure 2

3.
Structure 3

4.
Structure 4

5.
Structure 5

6.
Structure 6

7.
Structure 7

8.
Structure 8

9.
Structure 9

10.
Structure 10

11.
Structure 11

12.
Structure 12

13.
Structure 13

14.
Structure 14

15.
Structure 15

16.
Structure 16

Answers

Answer:

aa

Explanation:

hope heelpes sal

Cytoplasm contains the cytosol, microfilaments and other support structures in the cytoskeleton; it holds parts of the cell together.

What is cell wall?

Cell wall is the rigid outer layer of the cell; this forms a protective wall made mostly of cellulose, a structural carbohydrate. It  maintains the shape of the cell by preventing water loss. Vacuole a phospholipid membrane bound organelle plays a structural role in the cell; supports the cell membrane by exerting turgor pressure.

Arranged in a phospholipid bilayer, the cell membrane is semi-permeable; allowing entry into the extracellular fluid or the cytoplasm which are both hydrophilic and contain large concentrations of polar water molecules or other water-soluble compounds.

The hydrophilic heads of the bilayer are attracted to water while their water-repellent hydrophobic tails face towards each other- allowing molecules of water and hydrophilic molecules to move across the membrane along the concentration gradient.

Therefore, Some organelles are bound by membranes like those that make up the external structure of the cell, with varying compositions of phospholipids and proteins.

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Jordan needs to repeat the experiment, but his teacher says that he needs to improve his design. In his second experiment, what should he do differently?

Answers

I saw someone else ask the same question hope this helps!

What are three possible long-term consequences of two species occupying the same niche?

Answers

Answer:

one will become extinctone/both will adaptone will migrate to a new location

Explanation:

An ecological niche is the role species has in its environment. This includes how it survives, reproduces, finds shelter, and obtains good. It includes all its interactions with both biotic (living) and abiotic (non-living) factors.

When species occupy the same niche, it means they are competing for the same resources. This is not sustainable. Eventually, one of three things are likely to happen:

one species will die out (become extinct) because they are being outcompeted by the more successful species, and will struggle to survive without adequate food and sheltereither one or both species will have to adapt to occupy another similar niche by, for example, exploiting a new food source in the area.either one or both species will have to migrate to a new area to occupy a different geographical area and new resources.

The species that is being excluded from the niche can either adapt in the long term to occupy another similar niche, migrate to a new area, or it can die out.

Answer: The species that is being excluded from the niche can either adapt in the long term to occupy another similar niche, migrate to a new area, or it can die out.

Explanation: hope it helps ^w^

Energy is released from ATP when a phosphate group is removed.
true or false?

Answers

Yes! True!

[From nature.com] "When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP). Likewise, energy is also released when a phosphate is removed from ADP to form adenosine monophosphate (AMP)."

Answer:

true bro trust me

Explanation:

~PLEASE HELP ME~
The warming of the atmosphere by the trapping of heat being radiated to space is called
a)condensation
b)evaporation
c)the greenhouse effect
d)radiation

Answers

Answer:

The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat. This process makes Earth much warmer than it would be without an atmosphere. Solar energy absorbed at Earth's surface is radiated back into the atmosphere as heat. As the heat makes its way through the atmosphere and back out to space, greenhouse gases absorb much of it.

The answer is c



Good luck

the food prevented from leaving the stomach by a _________​

Answers

Answer:

valve

Explanation:

Answer:

Valve!

Explanation:

A “valve” called the lower esophageal sphincter (LES) is located just before the opening to the stomach. This valve opens to let food pass into the stomach from the esophagus and it prevents food from moving back up into the esophagus from the stomach.

Which of the following is true:

- Since the active site has a specific shape it can only fit one substrate.

- The active site can fit any type of substrate.

- Nothing can fit or bond with the active site of an enzyme.

Answers

Answer: Since the active site has a specific shape it can only fit one substrate.

Explanation: I took one for the team on Ed puzzle.

Since the active site has a specific shape it can only fit one substrate. The correct option is A.

What is active site of enzyme?

The active site is the region of an enzyme where substrate molecules bind and undergo a chemical reaction in biology and biochemistry.

The active site is made up of amino acid residues that form temporary bonds with the substrate (binding site) and residues that catalyze the substrate's reaction (catalytic site).

The active site of an enzyme is the specific region of the enzyme where a substrate binds and catalysis or chemical reaction occurs.

It is a protein structural element that determines whether the protein is functional when subjected to an enzyme reaction.

A holoenzyme is a fully active enzyme that is made up of a protein portion (apoenzyme) and a cofactor.

Thus, the correct option is A.

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Which of the following best describes the product of DNA transcription

Answers

I’m pretty sure it’s an RNA molecule

Its an RNA molecule I took the test in the 9th grade  

A species is a particular type of living thing that can reproduce by interbreeding among themselves.

True False

Answers

Answer: True

Explanation:

30 living things name​

Answers

Answer:

Here is a list of living things:

HumansGorillasApesMonkeysGiraffesPigsHedgehogsCowsHorsesSheepGoatLambDuckHummingbirdOstrichCockroachCicadaCentipedeKatydidElephantTapirRhinocerosHippopotamusTigerSquirrelSilverfishOctopusSharkWhaleDolphin

Hope this helps!

Animals:dogs,cats,tigers,sharks,human beings,cows,lions,rabbits,fish,eagles

Plants:mangoes, apples,oranges,bananas,grapes,coconut,lime,peach,pear,

Birds:owl,dove,goose,turkey,raven,parrot,ostrich,hawk,eagle,pigeon,robin

Please help me quickly please!! ✨

Answers

Answer:

its from top to bottom trust me

Explanation:

what causes typhoid in human​

Answers

If you consume a food or drink contaminated with Salmonella Typhi or Salmonella Paratyphi, the bacteria can multiply and spread into the bloodstream, causing typhoid fever or paratyphoid fever.

Answer:

if the person has been infected from typhoid he she must be in contamination of dirty polluted water and food

What describes G and why they face the watery inside and outside of the cell

Answers

Answer:

Because they are hydrophilic

Explanation:

The cell membrane is made up of a phospholipid bilayer. The phospholipid bilayer is made up of an arrangement of phosphate heads, which are (attracted to water) hydrophilic, and fatty acid tails, which are hydrophobic. (repelled by water).

Because they are attracted to water, the phosphate heads face the outside of the cell, where the water is

Consider this animal cell.

The organelles in an animal cell are labeled. Part G is a bean-shaped structure with folding inside.

Which organelles are labeled G?

Answers

Most likely a mitochondrian

Answer:

Its Mitochondria

Explanation:

Write a summary of the digestive system. Include the organs of the system and tell if physical or chemical change or both take place in each organ.

Answers

The human body uses the process of digestion to break down food into a form that can be absorbed and used for fuel. The organs of the digestive system are the mouth, esophagus, stomach, pancreas, liver, gallbladder, small intestine, large intestine and anus. Recognizing how these organs work together to digest food is key to understanding how digestion works.

The digestive process begins in the mouth. Even before eating begins, the anticipation of eating stimulates glands in the mouth to produce saliva. The digestive system carries out three primary processes: mixing food, moving food through the digestive tract (peristalsis) and using chemicals to break down food into smaller molecules.

In one plant species petal color follows INCOMPLETE DOMINANCE. If there
are alleles for both red and white plants, what would a heterozygous plant's
phenotype be?
Red
Pink
White
Red and White

Answers

Answer:

Pink

Explanation:

Incomplete dominance is when one allele is not entirely dominant over the other. The resulting phenotype of the heterozygote is intermediate between the two alleles. That means the flowers would be pink.

Red  - no, this would be true if red was dominant to white

Pink  - yes, this is an intermediate phenotype

White  - no, this would be true if white was dominant over red.

Red and White  - no, this would be true if the alleles were co-dominant and both equally but independently expressed.

What causes sea floor to spread apart at mid ocean ridges?

Answers

Answer:

Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.

When stomata are closed during hot weather, Oxygen combines with RuBP and a wasteful process occurs, known as:

a. photo phosphorylation
b. photo transpiration
c. photochemical
d. photorespiration

Answers

Answer:

Photorespiration

Explanation:

Fill in the blank.
Living things get energy directly from the sun by _______ or indirectly by _______.

Answers

Fill in the blank.

Living things get energy directly from the sun by ___photosynthesis____ or indirectly by ____i dont know___.

Organisms either get their energy directly from the sun during photosynthesis or indirectly by eating those organisms.

The packaging and distribution center of the cell is the
Group of answer choices

central vacuole.

nucleus.

nuclear envelope.

Golgi apparatus.

Answers

Answer: The Golgi  Apparatus

The Golgi apparatus is a set of flattened, membrane-bound sacs that serve as the packaging and distribution center of the cell.

Explanation:

The packaging and distribution center of the cell is the function of the golgi apparatus. Golgi apparatus prepares proteins and lipids in cell. Thus, the correct option is D.

What is Golgi apparatus?

Golgi body is also known as a Golgi apparatus. It is a cell organelle which helps in processing and packaging of proteins and lipid molecules, especially the proteins that are destined to be exported out from the cell.

Stack of small flat sacs formed by membranes inside the cell's cytoplasm. Golgi apparatus prepares proteins and lipids for the use inside and outside of the cell.

Therefore, the correct option is D.

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Macy always thought there were only a few hair colors: blond, brown, and black. However, when she actually began looking around, she saw varying shades of these hair colors. What is possible reason for so many different hair colors?

Answers

Answer: A possible reason for different shades is the different genes received from their parents.

polygenic inheritance

Viruses cause disease by destroying cells and by disrupting the body's normal homeostasis. A virus can be fast-acting, such as the virus that causes the , or may belong to the group of viruses called retroviruses , which includes the virus that causes .

Answers

Answer:

The correct answer is -

The fast-acting virus causes: Meningitis

The slow-acting virus causes: AIDS (HIV)

Explanation:

A microorganism that can replicate inside a host cell and able to disrupt the homeostasis and leads to the killing or death of the cell. A virus can be either a fast-acting or slow-acting virus.

Meningitis is one of the fast-acting virus so fast that can result in the death of the person within 24 hours if not get proper medical assistance. Whereas retroviruses, a group of viruses that is slow-acting and grouped on the basis of their structure and replication method, the major disease that is caused by these viruses is AIDS by a retrovirus called HIV.

Answer:

Viruses cause disease by destroying (cells) and by disrupting the body's normal homeostasis. A virus can be fast-acting, such as the virus that causes the (common cold), or may belong to the group of viruses called (retroviruses) , which includes the virus that causes (influenza).

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