A 2-column table with 4 rows. The first column labeled wave has entries W, X, Y, Z. The second column labeled Observations has entries its motion is perpendicular to wave motion, its particles move up and down, its particles only move small amounts, its motion is parallel to wave motion.
Which statement is best supported by the table?

Waves W and Y are transverse waves, Wave X could be a longitudinal or transverse wave, and Wave Z is a longitudinal wave.
Waves W and Y are longitudinal waves, Wave X could be a longitudinal or transverse wave, and Wave Z is a transverse wave.
Waves W and X are longitudinal waves, Wave Y could be a longitudinal or transverse wave, and Wave Z is a transverse wave.
Waves W and X are transverse waves, Wave Y could be a longitudinal or transverse wave, and Wave Z is a longitudinal wave.

The first wave appear after 320 seconds and after the arrival of P wave

We can use the formula TD = d × t / 100 km

TD = d × t / 100 km

= ( 4000 km × 8 s ) / 100 km

= 32000 km /s / 100 km

= 320 seconds

The first s-wave will arrived in 320 seconds after the arrival of the first p-wave

The earliest waves to reach a seismograph are known as P waves, or primary waves. The fastest seismic waves, known as P waves, can pass through solid, liquid, or gas. On the medium they travel through, they leave a trail of compressions and rarefactions

The second waves to arrive during an earthquake are called S waves, or secondary waves. They can only pass through solids and are substantially slower than P waves

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Answer:

Explanation: A children's liquid medicine contains 100 mg of the active ingredient in 5 mL . If a child should receive 150 mg of the active ingredient, how many milliliters

DNA is made up of genes that carry hereditary information

The molecule inside cells that contains the genetic information responsible for the development and function of an organism and DNA molecules allow this information to be passed from one generation to the next generation and a molecule that contains the biological instructions that make each species unique

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Answer:

D

Explanation:

molecules have potential energy and kinetic energy.

Tempreture is defined as the average kinetic energy and internal energy is PE+KE. Pptential energy in particles or molecules is just there position relative to one another. A gas which has seperated particles will have a greater potential energy than a solid/liquid.

Here independent variable is Time spent on studying.

In this case group of students can change their duration of time which they spent on studying. it could be 1 hour a night, 4 hour a night or anything therefore time spent on studying is independent variable.

Time they spent on studying will directly affect their final exam grade at the end of the 6 weeks therefore final exam grade is dependent variable.

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A research chemist is trying to create a new plastic to be used as a food container that is more durable and lighter than glass, and so cheaper to transport which is an example of research chemistry that benefits the environment.

This is referred to as the physical surrounding or conditions in which an organism lives and contains living and non-living components which have various forms of influence on human life.

Plastic is a substance which is hard to decompose and takes many years and also has the tendency to release harmful chemicals into the environment. The creation of one which more durable and easier to transport means there will be less plastic wastes.

This will therefore reduce various forms of pollution and benefit the environment at large and is therefore the reason why it was chosen ad the correct choice.

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The average atomic mass of the element is 25.75 amu.

m(²⁵X) = 25.0 amu; the average atomic mass of isotope-25

m(²⁸X) = 28.0 amu; the average atomic mass of isotope-28

ω(²⁵X) = 75.0% ÷ 100%

ω(²⁵X) = 0.750; fractional abudance of isotope-25

ω(²⁸X) = 25.0% ÷ 100%

ω(²⁸X) = 0.250; fractional abudance of isotope-28

m(X) = m(²⁵X) × ω(²⁵X) + m(²⁸X) × ω(²⁸X).

m(X) = 25.0 amu × 0.750 + 28.0 amu × 0.250

m(X) = 25.75 amu; average atomic mass of an element

The unified atomic mass unit (amu) is a standard unit of atom.

Isotopes are chemical elements with same atomic number, but different atomic mass (different number of neutrons).

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a. The smell of burnt food travels through the houses- Because the particles are really heated up and have a lot of kinetic energy, which causes them to move quickly, the stench of burnt food permeates the entire house.

b. When two solids are placed on top of each other, they do not mix-  Because they have clear boundaries and a definite shape, two solids stacked on top of one another do not mix.

c. Pumping up your bike tires gives a smooth ride- Because the tire's air pressure is what maintains it in place. Even though the tires appear to be firm when you push on them with your palm, they actually have a lot of give as the vehicle's weight shifts and it bounces around the road.

d. Smokers can cause lung damage in other people- The heart and blood arteries are impacted by secondhand smoke, which raises the risk of suffering a heart attack. The risk of developing and passing away from heart disease rises when people are exposed to secondhand smoke.

e. Heating gas in a closed container will increase its pressure- When gases in containers are heated, the average speed of their molecules increases. They consequently strike the container walls more frequently, more forcefully, and with greater force. Therefore, when the gas's temperature rises, it is under more pressure.

f. Poisonous gasses from a factory chimney can affect a large area- manufacturing chimney smoke, and power plant emissions all contribute to air pollution. Acids are created when poisonous gases, like sulfur dioxide, combine with rain and mist. A large area of plants are killed when acid rain occurs.

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Answer: here is the answer, I tried. lol, remember to re-write it!

The first stage is where it rains into grass, water, anything. Then it goes into the air and into more clouds, and produce more rainfall, which is evaporation. After that, it goes into precipitation, where it can cause hair, mist, rain, or snow. Then condensation, where water collects droplets when there is humid air, into the clouds. Then runoff, where the water is transported to a new location to produce rainfall.

The the numbers of all the lab rules that would directly apply to this situation are discussed below.

A microscope is a laboratory equipment that is made up of lens which helps to magnify an object under investigation for study and observations.

A prepared slide is a slide that has undergone different staining procedures and is ready to be view under the microscope.

To make an efficient use of a microscope, the following laboratory rules needs to be followed:

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Answer:

[tex]b[/tex]

[tex]temperature[/tex]

Answer:A hypothesis is a tentative explanation that can be tested by further investigation. A theory is a well-supported explanation of observations. A scientific law is a statement that summarizes the relationship between variables. An experiment is a controlled method of testing a hypothesis.

Explanation:

Sugar has 12 elements of carbon, 22 elements of hydrogen, and 11 elements of oxygen.

Salt has 1 element of sodium, and 1 chlorine

Baking soda has 1 sodium, 1 hydrogen, 1 carbon and 3 oxygen

A chemical element is a substance that cannot be further broken down by any chemical reaction.

Each element has its own specified number of proton in their nuclei.

An element’s atoms must all have the same number of protons but they can have different numbers of neutrons and hence different masses.

Examples of elements include:

Some elements are more abundant that others in the universe. At 75 percent, hydrogen is the most abundant element in the universe, followed by helium at 23 percent, then oxygen at 1 percent.

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If this symbol is seen on a chemicals bottle, it means that it is an oxidizing chemical.

In a chemical laboratory there is usually a special cabinet for the storage of chemicals. The chemicals that are stored are often chemicals that are used to carry out one kind of experiment or the other in the laboratory.

However, symbols are used to symbolize the peculiarity of each particular chemical. Now we can see the symbol as shown in the image attached. If this symbol is seen on a chemicals bottle, it means that it is an oxidizing chemical.

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Answer:

12.6

Explanation:

An incompletely dissociating solution would have weak conductivity. Ions that have completely broken free from their bonding conduct more effectively than those that are still connected.

Aquatic organisms and plants prefer a particular spectrum of salinities. Outside of this area, they will have negative effects and possibly even die. Others can endure both low and high salinities, whereas certain creatures can only endure low salinity.

In addition to its direct effects on aquatic life, salinity has various other important influences on the chemistry and density of water.

How is Conductivity measured?

The most popular way to quantify saltiness is in parts per thousand, or grams per liter.

A Siemen is a unit used to measure conductivity. It is also known by its smaller equivalents, the milli-Siemen and the micro-Siemen, which are each one millionth of a Siemen. The most popular type of conductivity is referred to as specific conductivity.

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Physical, chemical, pure substance, and mixture are all categories of properties of matter.

What is Matter?

Therefore, physical, chemical, pure substances, and mixtures are the main categories of matter.

Hence, all the given options are correct.

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Number 4 -

1 kilogram = 1000 grams

0.79kg * 1000g = 790g

0.3kg * 1000g = 300g

790g - 300g = 490g

Number 5 -

24 hrs / 3 = 8

That means the lamb was fed 8 times in one day.

1 liter = 1000 milliliters

Using this conversion, we could do 290 * 8 to figure out how many milliliters it was fed in one day.

290 * 8 = 2320

2320 / 1000 = 2.32 liters fed to the lamb in one day

Working on my mental math this way<3

The most likely organic compound to exist in the liquid state at room temperature is Propanal; option D

Organic compounds are the compound which are obtained from organic materials such as plants ad animals,

Organic compounds can also be obtained from the remains of dead plants and animals.

Generally, organic compounds are composed of the following elements:

Carbon, Oxygen, hydrogen, Nitrogen, Phosphorus, and Sulfur.

Organic compound include hydrocarbons which usually exist as gasses.

However, with increase in molecular weight as well as presence of other intermolecular forces such as hydrogen bonds, organic compounds can exists as solids and liquids.

Considering the give compounds, Propanal will most likely exist as liquid because of the presence of hydrogen bonding in the molecules.

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If a hydrolysis reaction forms a carboxylic acid from an ester and water, the other product will be an alcohol.

Hydrolysis breaks down compounds by adding a water molecule.

Hydrolysis is a reaction that breaks down the chemical bonds between molecules via the addition of a water molecule.

Hydrolysis of an ester gives an alcohol and a carboxylic acid:

R-COOR + H₂O ⇄ R-COOH + R-OH

R-COOR is general molecular formula of an ester.

H₂O is water.

R-COOH is general molecular formula of a carboxylic acid.

R-OH is general molecular formula of an alcohol.

An ester is a compound in which at least one hydroxyl group is replaced by an alkoxy group.

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The correct option is B.

Resting potential is the state of a neuron when it is not firing a neural impulse.

Resting potential is considered as the imbalance of electrical charge which existed between electrically excitable neurons or nerve cells in the interior and in their surroundings.

The resting membrane potential of a particular cell defines as the difference in electrical potential across the plasma membrane as when the cell exists in a non-excited state. The electrical potential difference that takes place across a cell membrane traditionally is expressed inside the cell by its value which is relative to the extracellular environment

When the condition of not sending a signal by a neuron takes place, it is considered to be at the "rest" stage. When a neuron exists at rest position, the inside region of a neuron is negative with respect to the outside.

The potential is recorded whenever a living cell is impaled with a microelectrode and is termed as the resting potential and it varies from one cell to another cell. Here it is valued to be -60 mV, but the value can range between -80 mV and -40 mV which depends on the particular type of nerve cell existed.

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The element that requires the least amount of energy to remove the outer-most electron from a gaseous atom in the groud state is Sodium (Na). That is option 3.

A group state of an atom is defined as the level of energy attained by an atom in which all its electrons are in the lowest possible energy levels.

From the periodic table, the elements are arranged in groups and periods according to their atomic mass number.

From the atoms listed, sodium is element that requires the least amount of energy to remove the outer-most electron from a gaseous atom in the groud state.

This is so because of the following reasons:

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Complete question

Which Element Requires The Least Amount Of Energy To Remove The Most Loosely Held Electron From A Gaseous Atom In The Ground State?

(1) bromine

(2) calcium

(3) sodium

(4) Silver

Answer:

as we know that E= mc²

E= .oo1×(3×10⁸)²

E= .001×9×10¹⁶

we can right .001 =1×10‐³

E=1×10-³×9×10¹⁶

E=9×10¹³

ans is B 9×10¹³

9×10¹³J is the energy that is released if a sample loses 0.001 kg mass through radioactive decay. Therefore, the correct option is option B.

Energy, which is observable in the execution of labor as well as in the form of light and heat, is the quantitative quality that's also transferred to something like a body or to any physical system in physics. Energy can be transformed in form but cannot be created or destroyed, according to the rule of conservation of energy. The joule is the SI's (International System of Units) unit of measurement of energy (J).

A moving object's kinetic energy, an object's potential energy, an object's elastic energy, chemical energy linked to chemical reactions, electromagnetic radiation's radiant energy, and the internal energy of a thermodynamic system are examples of common kinds of energy.

E= mc²

E=0 .001×(3×10⁸)²

E=0.001×9×10¹⁶

E=9×10¹³J

Therefore, the correct option is option B.

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Option A displays the accurate dimensional analysis for converting 14,612 mL to daL.

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Answer:

4.5 written in scientific notation is 4.5×100 4.5 × 10 0 .

The only exponent number that will produce 1 as the value of the number is 0.

Explanation:

Making new compounds for high-speed tires is best done by the physical chemist

Chemical compounds are made up of atoms of different elements, joined together by chemical bonds and a chemical synthesis usually involves the breaking of existing bonds and the formation of new ones and physical chemists aim to develop a fundamental understanding at the molecular and atomic level of how materials behave and how chemical reactions occur, knowledge that is relevant in nearly every area of chemistry

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Combustion of propane is the exothermic reaction

Combustion reactions are reactions in which a substance reacts with an excess of air or oxygen to form products. the combustion of hydrocarbons in the presence of stoichiometric or excess levels of oxygen forms carbon dioxide and water and with the release of heat the molecular formula of propane is C₃H₈. one mole of propane needs five moles of oxygen for complete oxidation to form carbon dioxide and water.

The balanced equation for combustion of propane is:

C₃H₈(g) + 5O₂(g)→3CO₂(g)+4H₂O(g)

The products are 3 moles of CO₂ and 4 moles of H₂O for every mole of the alkane burnt completely. propane combust completely

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The final concentration of sulfuric acid in terms of molarity is 0.08 M.

The molarity of a solution expresses the concentration in terms of the number of moles of solute per liter of solution. Since the volume of the solution increased, the molarity of the solution will change.

First, let us solve for the number of moles of sulfuric acid based on the initial concentration and volume. Volume must be converted to L in order for the units to have consistency.

number of moles = molarity*volume

number of moles = 0.40 M * 250 mL * ( 1 L/1000 mL)

number of moles = 0.10 moles

Then, let us solve for the new concentration by dividing the same number of moles with the new volume. The number of moles remains the same since there is no addition of solute.

final concentration in terms of molarity = number of moles / total volume

final concentration = 0.10 moles / [(250mL+1000mL)*(1L/1000mL)]

final concentration = 0.08 M

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Answer:

I think in period 2

Explanation:

Mallory should look to find another element that has similar properties to those of Fluorine in Group 17 and is denoted as option D.

This is defined as the arrangement of elements based on their atomic number in a tabular form. It consists of 18 vertical columns which are referred to as groups and seven horizontal rows called period.

Group 17 contains halogens such as fluorine, iodine etc and they have similar properties which is therefore the reason why it should be looked at for another element in this type of scenario.

This is also the most appropriate choice is option D.

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