Task 2. Protecting Your Model Village from Tsunamis In this task, you will design a model village to withstand the effects of a tsunami. Estimated time to complete: 1 hour You will need the following materials: 2 pieces of printer paper, 8 inches × 11 inches 2 pieces of card stock, 8 inches × 11 inches 1 piece of cardboard, 8 inches × 11 inches a long, shallow plastic container, around 30 inches long, 15 inches wide, and 5 inches deep tape or glue a small plate or tray water a ruler a small bag of sand, about 2 pounds Hypothesis and Data Collection

Part A Before you design your model village, write down the problems you observed in task 1. What were the largest risks to the community? What happened to the homes?

Part B Design a model village that addresses the problems you identified. Consider the following questions: Does elevation play a factor? If so, can the elevation be changed to protect the homes? Could the residents build a structure that would prevent a tsunami from reaching the community? What would this structure look like? How would the residents build it? What could limit the erosion of the beach?

Part C After you design your model, build your homes and place them in the same positions as they were in task 1. Build any additional structures you think will help protect these homes. Repeat the tsunami experiment from task 1, pushing the waves three to four times.

Analyze and Extend Part A Did your results match your predictions about the additional structure protecting the homes?

Part B To prevent damage from natural hazards, scientists must consider the best ways to keep people safe while also considering practicality in terms of cost, interference of new structures in day-to-day life, and other such factors. If your plan worked, was it a practical solution for the community? Can you think of any downsides to your plan? If it didn’t work, how would you improve your plan? Can you foresee any problems with executing your plan?

Part C. Tsunami evacuation plans often consider the elevation of the community and its distance from the shoreline when deciding which towns to evacuate. How could this data help in building new homes and communities along coastal areas that are prone to tsunamis?

Part D

The home in the picture below is from a tsunami-prone area. Based on the results of your experiment, do you think the structure of this home would protect against tsunamis? I'LL GIVE BRAINLIEST TOO.

Copper has the highest thermal conductivity as compared to other metals in the periodic table.

Thermal conductivity refers to the rate at which heat is transferred by conduction through a unit cross-section area of a material. When a temperature increases at one end it moves to the other end through conduction.

So we can conclude that Copper has the highest thermal conductivity as compared to other metals in the periodic table.

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The safe house of lean might influence a product owner to provide better customer service.

The safe house of lean is designed to provide ultimate value to the customer one the shortest possible time.

Employing the safe house of lean might influence the product owner in the following two ways:

Therefore, the safe house of lean might influence a product owner to provide better customer service.

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Answer:

13448

Explanation:

i think im wrong but

164(82)=13448

it's 82g/mol) for this question

The molarity of the HCl acid will be 0.001 M.

A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H⁺ ions and OH⁻ ions to generate water.

This is the neutralization of a strong acid (HCl) and a strong base (NaOH), which is ruled by this equation :

HCl (aq) + NaOH (aq) → NaCl (aq) + H₂O (l)

Mole Ratio : 1 mol HCl : 1 mol NaOH

Formula used ;

Molarity  = number of moles  / Volume  (in liters)

Solve for n ;

n = M × V

Substitute values and compute ;

n = 0.40 M × 0.025 liter = 0.01 moles NaOH.

As the molar ratio is NaOH : HCl

Therefore, there will be same number mole for the HCl

Now, Molarity of HCl Solution ;

Molarity = n / volume

Molarity = 0.01 / 10

             =  0.001 M HCl

Hence, The molarity of the HCl acid will be 0.001 M.

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Answer:

the answer is c

Explanation:

A carboxylic acid is an organic compound that contains the carboxyl functional group.

Answer:

OH-(aq)+H+(aq)->H2O(l)

Answer is shown in photo.

Explanation :

APEX

Answer:

Explanation:The ratio of Coulomb force to gravitational force for an electron and a proton is given as,

r

1

​

=

R

2

Gm

1

​

m

2

​

​

4πε

0

​

1

​

×

R

2

q

1

​

q

2

​

​

​

=

6.67×10

−11

×9.1×10

−31

×1.67×10

−27

9×10

9

×(1.6×10

−19

)×(1.6×10

−19

)

​

=

1

2.27×10

39

​

The ratio of Coulomb force to gravitational force for two protons is given as,

r

2

​

=

R

2

Gm

2

​

4πε

0

​

1

​

×

R

2

q

1

​

q

2

​

​

​

=

6.67×10

−11

×(1.67×10

−27

)

2

9×10

9

×(1.6×10

−19

)×(1.6×10

−19

)

​

=

1

1.24×10

36

​

(b)

The magnitude of Coulomb force between electron and proton is given as,

F=

4πε

0

​

1

​

×

R

2

q

1

​

q

2

​

​

=

(10

−10

)

2

9×10

9

×(1.6×10

−19

)×(1.6×10

−19

)

​

=2.304×10

−8

N

The acceleration of electron is given as,

a

1

​

=

m

1

​

F

​

=

9.1×10

−31

2.304×10

−8

​

=2.5×10

22

m/s

2

The acceleration of proton is given as,

a

2

​

=

m

2

​

F

​

=

1.67×10

−27

2.304×10

−8

​

=1.4×10

19

m/s

2

Answer:

+1

Explanation:

The oxidation state of Hg in Hg2Cl2 is +1. It has +1 state. 0=2Hg +2 (-1) Hg=+1. Mercury chloride (HgCl2) is considered as the dominant form of mercury in coal combustion flue gas. The oxidation state of an atom is the charge of this atom after ionic approximation of its heteronuclear bonds. The oxidation number is synonymous with the oxidation state. Determining oxidation numbers from the Lewis structure (Figure 1a) is even easier than deducing it from the molecular formula (Figure 1b). The oxidation number of each atom can be calculated by subtracting the sum of lone pairs and electrons it gains from bonds from the number of valence electrons. Bonds between atoms of the same element (homonuclear bonds) are always divided equally. When dealing with organic compounds and formulas with multiple atoms of the same element, it's easier to work with molecular formulas and average oxidation numbers (Figure 1d). Organic compounds can be written in such a way that anything that doesn't change before the first C-C bond is replaced with the abbreviation R (Figure 1c). Unlike radicals in organic molecules, R cannot be hydrogen. Since the electrons between two carbon atoms are evenly spread, the R group does not change the oxidation number of the carbon atom it's attached to.  

source: www.chegg.com

Answer: O A. +1

Explanation: i took the test

Explanation:

cudhdbsieehe eirbruwnee8ebeuw eodjsuww8

Explanation:

a) Both A and R are true and R is the correct

explanation of A.

Answer:

[tex]\fbox {c) A is true but R is false.}[/tex]

Explanation:

Assertion (A):

⇒ Naphthalene balls disappear with time without leaving any solid.

⇒ True √

Reason (R):

⇒ Solid converted to liquid is called sublimation.

⇒ False ×

⇒ Solid converted to liquid is called melting

M₁V₁=M₂V₂

20 x V₁ = 3.5 x 755

V₁ = 132.125 ml

Option A is the correct answer that describes the equation best as compared to other statement.

Four molecules of aluminum and three molecules of diatomic oxygen react to form two molecules of aluminum oxide is the statement best describes the equation because this statement have same number of molecules that reacted in the equation. We considered an equation correct that have wrong numbers in front of atoms.

4Al+3O2------------>2Al2O3

So we can conclude that option A is the correct answer that describes the equation best as compared to other statement.

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Answer:

the pro on and the electron

Answer:

Season 5 lol

Explanation:

Answer:

season 1

Explanation:

the man was shot rip

Answer:

I would say there would be 5-10% in a city, and maybe 10-20% in the country. It mainly varies depending on how big the city is, how many people/districts there are, and the size of the country, which makes it hard to give a certain percent of shops, as there may be small businesses included as well or new shops being built.

Hope this helps! This was pretty confusing for me as well so i hope the answer is alright (×﹏×)

The physical matter of which living or non living things are composed is called a molecule

A molecule is the smallest particle of an element or a compound which can normally exist alone and still retain the properties of that substance.

A molecule could be made up of an atom of an element of different atoms of elements such as:

So therefore, the physical matter of which living or non living things are composed is called a molecule.

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Answer:

atomic mass = 16 amu

Explanation:

The atomic mass is the total protons and neutrons in an element. The atomic number represents the total number of protons.

In this form, the superscript (raised exponent) represents the mass number/atomic mass. The subscript represents the atomic number. Therefore, if the number (16) is the superscript, this must be your answer.

¹⁶₈Z  
-----> 16 = mass number/ atomic mass
-----> 8 = atomic number

1.5 moles of [tex]O_{2}[/tex] gas

Reaction of Al with [tex]O_{2}[/tex] to form [tex]Al_{2} O_{3}[/tex] is given below...

2 Al + 1.5 [tex]O_{2}[/tex] → [tex]Al_{2} O_{3}[/tex]

Here, 2 moles of Aluminum reacts with 1.5 moles of [tex]O_{2}[/tex]

atomic weight of aluminum = 27 g / mole

so, 1 mole of aluminum contains 27 g

then how many moles are there if it has 54 g in it.

moles of aluminum in 54 g = 54/27 = 2 moles

As per the equation mentioned above,

2 moles of aluminum reacts with 1.5 moles of [tex]O_{2}[/tex].

∴1.5 moles of oxygen gas (02) are needed to completely react with 54.0 g of aluminum.

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Answer:

a.  [tex]P_2=1.38*10^4[mmHg][/tex]

Explanation:

If the Temperature of a gas remains constant (and if the amount of gas molecules doesn't change), then compressing the gas from 12.11 L to 0.669L will increase its pressure through Boyle's Law:  [tex]P_1V_1=P_2V_2[/tex]

We'll also need to recall that atmospheric pressure with units of mmHg (since that is the unit requested in the answer) is 760 mmHg.

Letting the initial Pressure and Volume be the P1 and V1, and the final pressure be the P2 and V2, we can substitute and solve:

[tex]P_1V_1=P_2V_2[/tex]

[tex](760[mmHg])(12.11[L])=P_2(0.669[L])[/tex]

[tex]\dfrac{(760[mmHg])(12.11[L \!\!\!\!-])}{0.669[L \!\!\!\!-]}=\dfrac{P_2(0.669[L]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{----})}{0.669[L]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{----}}[/tex]

[tex]13757.2496[mmHg]=P_2[/tex]

Since the final pressure is only measured to 3 significant figures, we round the pressure accordingly

[tex]13800[mmHg]=P_2[/tex]

Note that in scientific notation, this is [tex]P_2=1.38*10^4[mmHg][/tex], occasionally written as [tex]1.38\text{E}4[mmHg][/tex]

Answer:

Lactose is called milk sugar.

Explanation:

Hope It Helps!!!

Answer:

lactose

Explanation:

credits to the answer above !

Answer:

yo no se nada

Explanation:

solo se que no se nada xd

The molar mass of gas is 6.48 g/mol

Graham's law of diffusion states that the rate of diffusion of a gas is inversely proportional to the density of the gas.

The molar mass of Hydrogen gas = 2

R2/R1 = 1.8

Molar mass of gas = 2 × 1.8 × 1.8

Molar mass of gas = 6.48 g/mol

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Explanation:

(1)It is easily reversable, example: the melting of ice.

(2)It produces no new substance example: all cases of melting of solid to liquid.

(3) There is no change in the mass of the substance

example: the magnetization of iron.

(1)It is not easily reversable, example: all cases of burning.

(2) new substance are produced example: rusting of iron.

(3) There is change in the mass of the substance, example : slaking of lime.

The rheo leaf peel will lose water by osmosis and become flaccid. If the rheo leaf was boiled, this would not happen.

Across living membranes, water moves from a region of high to a region of low water potential.

Concentrated sugar solutions have low water potential when compared to the cell sap of the cells of rheo leaf peel. Thus, water will move from the rheo leaf peel to the sugar solution.

This will result in the wilting of the leaf peel.

If the leaf peel is boiled, the membranes in the cells die and can no longer function as a selectively permeable interface.

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Moles of electrons:

The moles of electrons that are transferred are 12F

A balanced equation:

2 moles of Aluminium metal react with excess copper(II) nitrate.

[tex]2Al + 3Cu{(NO_3)}_2 \rightarrow 2Al{(NO_3)}_3 +3 Cu[/tex]

Given:

Moles of Aluminium = 2

As Aluminium goes from 0 to +3 oxidation state

[tex]Al \rightarrow Al^{3+} + 3e^-[/tex]

And copper goes from +2 to 0

[tex]Cu^{2+} + 2e^-\rightarrow Cu[/tex]

On balancing the number of electrons we get:

For 1 mole of Al [tex]6e^-[/tex] is required.

Therefore for 2 moles of Al,

Total [tex](2\times6)[/tex]F mole of electrons

Where F= Faraday's constant= 96500 C

So, 12F moles of electrons are transferred.

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Answer: Gamma radiation

Explanation:

Gamma rays have high penetrating power, similar to high-energy X-rays.

An alpha helix which is 18 amino acids long will have 12 hydrogen bonds.

The alpha helix (α-helix) is a common in the secondary structure of proteins and is a right hand-helix conformation in which every backbone N−H group hydrogen bonds to the backbone C=O. group of the amino acid located four residues earlier along the protein sequence.

The alpha helix is stabilized by hydrogen bonds (shown as dashed lines) from the carbonyl oxygen of one amino acid to the amino group of a second amino acid.

Because the amino acids connected by each hydrogen bond are four apart in the primary sequence, these main chain hydrogen bonds are called "n to n+4.

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solid : the molecules are tightly packed

liquid : the molecules have some space in them

gas : molecules can freely move around

The best way to make an accurate measurement of the height of a polar liquid is to take the reading from the lowest point of the meniscus.

The meniscus of a liquid is a curved that occurs at the top of a liquid placed in a container as a result of the attractive forces between the molecules of a the liquid.

Polar substances such as water have a concave meniscus as they dip downwards.

Therefore, the best way to make an accurate measurement of the height of a polar liquid is to take the reading from the lowest point of the meniscus.

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