A spring with a spring constant of 3N/m is stretched until extended by 1.4m. How much elastic potential energy is stored by the spring?
Give your answer to 2 decimal places

Answers

Answer 1

The energy that is stored in the spring is 2.94 J.

What is the elastic potential energy?

We have to note that the elastic potential energy of the spring is the energy that has been stored in the spring and it is released to be able to do work once we pull the spring.

In this case we already know that;

W = 1/2Ke^2

W = work done

K = force constant

e = extension

Thus;

W = 0.5 * 3 * 1.4^2

W = 2.94 J

We can see that the stored energy for the spring in question is 2.94 J of energy stored.

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Related Questions

HELP PLEASE BOND ENTHALPY WORKSHEET

Answers

Bond energy is explained as the energy needed to destroy a bond/link. These values ​​are positive, indicating that bond scission is endothermic.

What is bond energy?Bond energies are typically based on  average  bond dissociation values ​​for species in the gas phase at a temperature of 298 Kelvin. Bond energy can be determined by measuring and calculating the enthalpy change as the molecule breaks down into  atoms and ions and dividing that value by the number of chemical bonds. For example, the enthalpy change in splitting methane (CH4) into one carbon atom and four hydrogen ions divided by the four bonds (number of C-H) gives the bond energy.Bond energy is not always the same  as bond separation energy. The bond energy value is the average of the bond dissociation energies within the molecule. Different amounts of energy are required to break subsequent bonds.

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A platinum bar measures 5. 0 cm long, 4. 0 cm wide,and 1. 5 cm thick. It has a mass of 700. 0 grams.

a) Calculate the volume of the platinum bar

b) Calculate the density of the platinum bar

Answers

volume of the platinum bar is 30 cm3, density of the platinum bar is 25g/cm3

It is assumed that,

750 g is the mass of a platinum bar.

L = 5 cm is the bar's length.

The width of the bar is 4 cm.

Bar width, 1.5 cm in height

V=l*b*h v=4*5*1.5=30cm3 is the volume of the bar.

The density of the platinum bar needs to be determined. Any substance's density can be calculated using:

The density of the platinum bar is 25g/cm3 and the volume of the platinum bar is 30 cm3.

So, the platinum bar's density. Therefore, this is the necessary solution.

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What is the speed of a car that travels 1000 m in 45 seconds?

Answers

Answer:

80,000km/h

Explanation:

Answer: 12.5 hope this is right.

Explanation:

Which term describes the molecule shown below?

Answers

Answer:

C

Explanation:

because i checked it in the periodic table solve it and that's it

krypton has a higher melting point than argon because of its group of answer choices ionic bonds. greater ionization energy. stronger dispersion forces. permanent dipole moment. hydrogen bonding.

Answers

Krypton has higher melting pointthen argon because of its stronger dispersion forces for iasondue to increase in atomic mass inter atomic attraction in these elements is only due to wekdispersion interactions. Answer for this problem is stronger dispersion forces.

The London dispersion force can be defined as a temporary attractive force due to the formation of a temporary dipole in  nonpolar molecules. When the electrons of two adjacent atoms move so that the atoms momentarily become dipoles, they are attracted to each other by the London dispersion force.

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to make up 1 l of a 0.5 m solution of edta starting with the free acid, approximately how much 10 m naoh will have to be added to adjust the ph to 7.0? do you expect this solution to have a ph-buffering capacity? the pkas of the four acetic acid groups on edta are 2.0, 2.67, 6.16 and 10.26.

Answers

To make up 1 L of a 0.5 M solution of EDTA starting with the free acid, the pH must be adjusted to 7.0. EDTA is a weak acid with a pKa of 2.0, 2.67, 6.16, and 10.26 for the four acetic acid groups.

At a pH of 7.0, EDTA will exist in a buffered state, meaning that it will be partially protonated and partially deprotonated.

To adjust the pH of the EDTA solution to 7.0, an alkali solution such as 10 M NaOH must be added. The amount of NaOH required can be calculated using the Henderson-Hasselbalch equation:

pH = pK a + log([base]/[acid])

where [base] is the concentration of the deprotonated form of EDTA and [acid] is the concentration of the protonated form of EDTA.

At a pH of 7.0, the acid-base equilibrium of EDTA will be:

[EDTA-] = [HEDTA]

At this pH, the buffer capacity is high. Since the pKa of EDTA is close to the desired pH, the buffer will resist changes in pH caused by added acids or bases.

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you will be rewarded with the necessary items to make your S'morel
If we were to add a piece of solid Cu to an aqueous solution of silver
nitrate, the Silver would be replaced in a single replacement reaction
forming aqueous copper (I) nitrate and solid silver. How much silver is
produced is 15.00 gramps of Cu is added to the solution of excess silver
nitrate? Show al work and don't forget to use significant figures.

Answers

50.9 grams of Cu are added to the excess silver nitrate solution.

What is molar mass?

The molar mass of a chemical compound is defined in chemistry as the ratio between the mass and amount of substance in any sample of said compound. The molar mass of a substance is a bulk property, not a molecular property. A substance's molar mass is the mass in grams of one mole of the compound. A mole is the number of entities present in a substance, such as atoms, molecules, or ions. A mole of any substance is defined as 6.022*10^23 molecules.

Here,

moles =  mass÷  molar mass

molar mass of Cu = 63.5 g/mol

moles = 15.00 g÷ 63.5 g/mol

= 0.236  moles

moles of Ag   =0.236  

moles  x 2/1 =0.472  moles

mass = moles x molar mass

the molar mass of Ag =107.87 g/mol

mass  = 0.472  moles x 107.87 g/mol = 50.9 g

50.9 grams of Cu is added to the solution of excess silver nitrate.

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Gather data: experiment with a variety of initial partial pressure of no, no2, and n2o3. For each set of initial partial pressures, use the gizmo to determine the equilibrium partial pressures of each gas. Run three trials for each set of initial conditions. Use the data you collect to fill in the first four columns of the table. (note that some no2 molecules combine to form n2o4, so there may be less free no2 than no) I don’t quite understand what it’s asking, so some clarification would be nice

Answers

The task is asking you to conduct experiments to determine the equilibrium concentrations of the gases NO, NO2, and N2O3 .

Specifically, you are to vary the initial partial pressures (or concentrations) of the gases and use a gizmo (presumably some sort of laboratory instrument) to measure the equilibrium partial pressures of each gas. You should conduct three trials for each set of initial conditions and record the data in a table with four columns: the initial partial pressures of NO, NO2, and N2O3 and the equilibrium partial pressures of NO, NO2, and N2O3. It is important to note that some NO2 molecules may combine to form N2O4, so there may be less free NO2 than NO at equilibrium. This experiment is designed to study the equilibrium of the reaction: 2NO(g) + 2NO2(g) <-> 2N2O4(g); The task is asking you to study the effect of the initial concentrations of each reactant on the equilibrium concentrations of each product. The data you collect should be useful in understanding the reaction kinetics and the thermodynamics of the system.

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a physical change is : a. souring of milk b. burning of gasoline c. rusting of iron d. fermentation of sugar forming alcohol e. condensation of steam

Answers

Physical changes occur in dairy products when water is simply evaporated from milk (powdered milk and sweetened condensed milk).

What is  physical change?

A physical change is a change to the physical—as opposed to chemical—properties of a substance. They are usually reversible. The physical properties of a substance include such characteristics as shape (volume and size), color, texture, flexibility, density, and mass.

A change in which a substance undergoes a change in its physical properties is called a physical change. A physical change is generally reversible. In such a change no new substance is formed.

Physical change is a type of change where the physical properties of matter change. A change of state of matter, change in colour, odour, solubility, etc. all are examples of physical change. During a physical change, neither the composition nor the chemical nature of matter is changed.

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Oxidation-Reduction and balancing through ion electron method. Answer choices on bottom. Can someone explain this problem how they got their answer? I having a hard time understanding oxidation and reduction reactions

Answers

The balanced equation of the redox reaction using the ion-electron method is:

3 Hg + 8 HNO₃ → 3 Hg(NO₃)₂ + 2 NO + 4 H₂O

The correct option is D.

What is a redox reaction?

Redox reactions include a change in the oxidation state of the substrate. When oxidation occurs, electrons are lost, or the oxidation state increases. When a reduction occurs, electrons are gained or the oxidation state decreases.

The balanced equation of the redox reaction using the ion-electron method is given below as follows:

Hg + HNO₃ → Hg(NO₃)₂ + NO + H₂O

Hg⁰ is oxidized to Hg²⁺ by the loss of two electrons

N⁵⁺ is reduced to N²⁺ by a gain of three electrons

To balance electron loss, we add a coefficient of 3 in from of Hg and a coefficient of 8 in front of HNO₃

3 Hg + 8 HNO₃ → 3 Hg(NO₃)₂ + 2 NO + 4 H₂O

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It is very hot during the summer, so you want to go to your local pool. The meteorologist explains that the UV index for the day is extremely high. What does the UV index represent?
A. The UV index represents the wavelength of the ultraviolet rays
B. The UV index represents the speed of the light ultraviolet rays
C. The UV index represents the intensity of the ultraviolet rays
D. The UV index represents the color of the ultraviolet rays. ​

Answers

The correct option is (C), i.e. C. The UV index represents the intensity of the ultraviolet rays.

The UV index serves as a gauge for the UV radiation intensity from the sun. It is a scale that ranges from 0 to 11+ and it is used to indicate the level of solar UV radiation on a particular day. The higher the UV index, the stronger the sun's UV radiation and the greater the risk of sunburn and other harmful effects on the skin and eyes. It is important to pay attention to UV index when spending time outdoors, especially during summer months and at high altitude or closer to the equator where the sun is stronger.

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makes a connection with in chemistry

Answers

Knowing how atoms and molecules behave in chemical reactions in chemistry depends on understanding electron transfer processes. The transfer of one or more electrons from one species.

to another occurs in electron transfer reactions, which are closely connected to oxidation-reduction (redox) processes. Atoms' oxidation states change during redox reactions, which are chemical processes. In the process of oxidation, electrons are lost, whereas in the process of reduction, electrons are gained. In a redox reaction, an oxidizing species (the reducing agent) transfers electrons to a species that is being reduced (the oxidizing agent). The term "oxidized" refers to a species that is losing electrons, whereas the term "reduced" refers to a species that is gaining electrons.Several biological activities, including cellular respiration, photosynthesis, and biochemical reactions, depend heavily on electron transfer reactions. They are utilized in a variety of technologies, including electrochemistry, fuel cells, and batteries.

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___Cr3+ + ___O2 ----> ___Cr2O3

Answers

Answer:

Explanation:

2 Cr3+ + 3/2 O2 -----> Cr2O3

help pls:))!!!!!!!!!!

Answers

Answer: C

Explanation:

Based on her survey which advertising mediums will work best publicize Leslie’s in the store specials

Answers

The correct answer is  printed  flyers and internet .

Printed flyers and internet are two popular advertising mediums used to promote businesses. Printed flyers can be distributed directly to customers through mail or handed out in public places. This allows for a targeted approach and can be cost-effective, especially if the business is located in a small area. However, printed flyers can easily get lost or discarded, making it difficult to measure their effectiveness.

On the other hand, the internet offers a wider reach and can target a larger audience. Advertisements can be placed on websites, social media platforms, and search engines. This allows for more precise targeting based on demographics and interests. The internet also offers the ability to track and analyze the success of advertising campaigns in real-time, allowing for quick adjustments to be made to improve their effectiveness. However, the cost of internet advertising can be higher than traditional print advertising, and it may require more technical knowledge and resources to create and manage an online advertising campaign.

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Leslie wants to know which advertising medium works best to promote her electronics store. She surveys her customers over a weekend and creates a bar graph. Based on her survey, which advertising mediums will work best to publicize Leslie’s in-store specials?

What is the name of this molecule?

Answers

Answer:

D).  2-Butyne

Explanation:

The "yne" indicates a triple bond.  The "2-" says it starts on the second carbon,

a mixture contains 0.250 mol of fe and 1.20g of c. what is the total number of atoms in the mixture?

Answers

If a mixture contains 0.250 mol of fe and 1.20g of c. the total number of atoms in the mixture is:  2.106× 10^23.

How to find the Total number of atoms ?

First step is to convert it into number of atoms

Atoms  of Fe = 0.250 mol × 6.02 × 10^23 /1 mol

Atoms of Fe = 1.505 ×10^23

1.20g of C to atoms of C

Molar mass of C =12.011g/mol

Atom of C = 1.20g × 1 mol/12.011g × 6.02 × 10^23 /1 mol

Atom of C = 6.014× 10^22

Now let find the total number of atoms

Total number of atoms  = Atoms of Fe + Atoms of C

Total number of atoms  =  1.505 ×10^23 + 6.014× 10^22

Total number of atoms   = 2.106× 10^23

Therefore the Total number of atoms  is  2.106× 10^23

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if a piece of metal has a volume of 0.00670 l and a mass of 60.0 g, what is the density of the rock in g/ml?

Answers

If the piece of the metal has the volume of the 0.00670 L and the mass of the 60 g. The density of the rock is 8955.2 g/L.

The mass of the metal = 60 g

The volume of the metal = 0.00670 L

The density is the ration the mass to the volume of the substances .

The density expression is given as :

The Density = mass / volume

Where,

The mass = 60 g

The volume = 0.00670 L

The density = 60 / 0.00670

The density = 8955.2 g/L

Thus the density of the rock is the 8955.2 g/L.

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1. How many atoms of oxygen are present in 0. 04 mole NaNO3?

2. How many moles of nitrogen atoms are present in 10. 5g of N2O5?

3. How many atoms of oxygen are present in 50g of Fe(H20)2(S04)3? Please answer fast

Answers

0.12  atoms of oxygen are present in 0. 04 mole NaNO3, 2. 0.097 moles of nitrogen atoms are present in 10. 5g of N2O5, 3. 0.127 atoms of oxygen are present in 50g of Fe(H20)2(S04)3

To find the number of atoms of oxygen present in 0.04 mole NaNO3, you can use the mole ratio from the chemical formula. The formula for NaNO3 is NaNO3, which means that for every 1 mole of NaNO3, there are 3 moles of oxygen atoms. Therefore, 0.04 mole of NaNO3 contains 0.04 mole x 3 atoms/mole = 0.12 atoms of oxygen.

To find the number of moles of nitrogen atoms present in 10.5 g of N2O5, you can use the molar mass and the molar ratio from the chemical formula. The molar mass of N2O5 is 108 g/mol, and the formula for N2O5 is N2O5, which means that for every 1 mole of N2O5, there are 2 moles of nitrogen atoms. Therefore, 10.5 g of N2O5 contains 10.5 g / 108 g/mol = 0.097 moles of nitrogen atoms.

To find the number of atoms of oxygen present in 50 g of Fe(H2O)2(SO4)3, you can use the molar mass and the molar ratio from the chemical formula. The molar mass of Fe(H2O)2(SO4)3 is 392.18 g/mol, and the formula for Fe(H2O)2(SO4)3 is Fe2(SO4)3.6H2O, which means that for every 1 mole of Fe(H2O)2(SO4)3, there are 6 moles of oxygen atoms. Therefore, 50 g of Fe(H2O)2(SO4)3 contains 50 g / 392.18 g/mol = 0.127 moles of oxygen atoms

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30 grams of MgCl2 contains how many moles?

Answers

Answer:

Only, 0.315.

Full number: 0.31508964300342

How many moles of CO2 are produced when 3.9 moles of C2H2 burn in oxygen?

Answers

The 50 moles of CO2 are produced when 3.9 moles of C2H2 burn in oxygen.

What is moles?

One mole is defined as the quantity of substance that has the same number of chemical species (atoms, molecules, ions, etc.) as those contained in 12 grams of the carbon-12 isotope.

What is oxygen?

Because oxygen contains only one type of atom, it is a chemical element, which is a type of substance. Since oxygen has an atomic number of 8, it is represented by the letter O in its formal chemical formula and has eight protons in its nucleus. In nature, molecular oxygen can be discovered.

2C2H2(g) + 5O2(g) ==> 4CO2(g) + 2H2O(g)

Next, look at the stoichiometric ratio of C2H2 to CO2.  You can see it is 2 moles C2H2 produces 4 moles CO2.

Thus, 25.0 moles C2H2 x 4 moles CO2/2 moles C2H4 = 50.0 moles CO2

Therefore, 50 moles of CO2 are produced when 3.9 moles of C2H2 burn in oxygen.

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The table below shows the time and distance of a moving car. What is the average speed of the car for the 10 minutes, expressed in meters per minute? In kilometers per hour? if u can pls put an explanation bc my teacher is rlly strict on that

Answers

The average speed of the car would be:

512 meters per minute30.12 km/h

What is the average speed?

The average speed of a moving object is the ratio of the total distance traveled by the object and the total time taken to cover the distance traveled.

The average speed can be mathematically expressed as:

Average speed = total distance/total time

From the graph, the total distance traveled by the car can be estimated as:

4800 + 320 = 5120 m

Total time = 10 minutes

Average speed of the car = 5120/10 = 512 meters per minute

5120 meters = 5120/1000 = 5.12 kilometers

10 minutes = 10/60 = 0.17 hour

Average speed of the car in kilometers per hour = 5.12/0.17 = 30.12 km/h

In other words, the average speed of the moving car in meters per minute is 512, while the speed in kilometers per hour is 30.12.

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two ways can scientists exhibit ethical behavior?

Answers

Answer:

Creating products that improve people's lives.

Remaining impartial about the data while conducting experiments.

Explanation:

0. 125L of a 0. 075 M HBr solution is used to neutralize 0. 0350L of an unknown Sn(OH)2

solution. What is the molarity of the unknown Sn(OH)2 solution?


please help

Answers

To neutralize 0.0350L of an unidentified Sn(OH)2 solution, 0.125L of a 0.075 M HBr solution is utilized. The molarity of the unknown Sn(OH)2 solution is 0.268 M.

The neutralization reaction between HBr and Sn(OH)2 is as follows:

HBr + Sn(OH)2 ---> SnBr2 + 2H2O

We can use the balanced equation and the stoichiometry of the reaction to find the molarity of the unknown Sn(OH)2 solution.

From the balanced equation, we can see that for every 1 mole of HBr, 1 mole of Sn(OH)2 is consumed.

We know that the HBr solution is 0.125L and 0.075M, so the number of moles of HBr is 0.125L x 0.075M = 0.00937 moles.

Since the number of moles of HBr is equal to the number of moles of Sn(OH)2, we can use the same number of moles to find the molarity of the unknown Sn(OH)2 solution.

The quantity of solute molecules per liter of solution is known as a solution's molarity. Therefore,

Molarity of unknown Sn(OH)2 solution = moles of solute / liters of solution

Molarity = 0.00937moles / 0.0350L = 0.268 M

Therefore, the molarity of the unknown Sn(OH)2 solution is 0.268 M.

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calcium reacts with sulfur forming calcium sulfide. what is the theoretical yield (g) of cas(s) that could be prepared from 7.72 g of ca(s) and 2.04 g of sulfur(s)?

Answers

Theoretically, 7.72 g containing ca(s) as well as 2.04 g of even more sulfur may be combined to produce 2.88 g of cas(s) (s).

Describe sulfur.

Among the most rectifiers is sulfur (S), sometimes spelt as sulfur, a nonmetallic chemical element in the oxygenation member (Group 16 [VIa] of the atomic numbers). Natural sulfur is a pale yellow substance that is brittle, flavorless, and odorless.

Where can you find sulfur?

Sulfur can be found naturally and now in metal bauxite ore. Natively, it can be found close to hot springs and volcanoes. The tenth most prevalent element, selenium is found in asteroids, the ocean, the crust of the earth, and the atmosphere.

balanced equation,

Ca + S ---> CaS

stoichiometry of Ca to S is 1:1

= Ca moles - 1.6 g/ 40 g/mol

= 0.04 mol

= S moles - 4.25 g / 32 g/mol

= 0.13 mol

stoichiometry of Ca to CaS is 1:1,

= CaS moles formed - 0.04 mol

= mass of CaS - 0.04 mol x 72 g/mol

theoretical yield = 2.88 g

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Do you feel that Paul Feyerabend’s belief falls more into a modernism or postmodernism method of thinking?

Answers

Yes Paul feyerabend falls more under postmodernism rather than modernism.

Paul feyerabend is considered a postmodernist philosopher of science. He is known for his critiques of the scientific method and the idea that there is a single "correct" way to do science. He argued that science is not a rational or objective enterprise, but is instead shaped by social and cultural factors. Feyerabend's views align more with postmodernism, which emphasizes the importance of context and subjectivity in understanding knowledge and reality.

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California, a city that is far inland, such as Sacramento, is typically warmer than a city near the coast, such as San Francisco agree or disagree

Answers

Answer:

correct

Explanation:

I agree that California cities that are farther inland, such as Sacramento, are typically warmer than those that are near the coast, such as San Francisco. This is because the coast has a cooling effect due to the ocean breeze and the proximity to the ocean, which helps to moderate temperatures. Inland areas, on the other hand, are farther from these cooling influences and can experience higher temperatures, especially during the summer months

400.0 ml of a 0.300 m solution of nacl is diluted to 900.0 ml. what is the new concentration of the solution?

Answers

400.0 ml of a 0.300 m solution of NaCl is diluted to 900.0 ml. The new concentration of the solution is 0.133 M.

Given that :

The initial concentration, C1 = 0.300 M

The initial volume, V1 = 400 mL

The final volume, V2 = 900 mL

The final concentration , C2 = ?

The final concentration can be calculated as :

C1 V1 = C2 V2

C2 = C1 V1 / V2

C2 = ( 0.300 × 400 ) / 900

C2 = 0.133 M

Thus, the concentration of the new volume with the volume of 900 mL is 0.133 M.

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Explain how human activity can affect the carbon cycle.
I

Answers

Answer:

Humans use many fossil fuels such as oil and coal which in turn releases much carbon into the atmosphere. And burning of the forests also releases much carbon as well. This carbon in the atmosphere does many negative changes to the earth such as causing ocean acidification and overall hurting the planet's ecosystems.

which aqueous solution will have the highest melting point? assume all of the solute are nonvolatile and have ideal van't hoff factors.

Answers

The highest melting point is 0.100 m AlCl₃

Water has a 0.51 Cl  molal melting point elevation constant.

They all share the same molal melting point elevation constant because they are all aqueous solutions.

0.100 M C₆H₁₂O₆

ΔT = i*Kb*m

The melting point elevation is ΔT, 

i = the van't Hoff factor =1,

The molal elevation constant of water's melting point is 0.51°C/m.

"where m = the molality = 0.100 m"

ΔT = i*Kb*m

ΔT = 1 * 0.51 * 0.100

ΔT  = 0.051 °C

0.100 m NaCl

ΔT = i*Kb*m

ΔT =2 * 0.51 * 0.100

ΔT = 0.102 °C

0.100 m AlCl3

ΔT = i*Kb*m

ΔT =4 * 0.51 * 0.100

ΔT = 0.204 °C

0.100 m MgCl2

ΔT = i*Kb*m

ΔT =3 * 0.51 * 0.100

ΔT = 0.153 °C

Your question is incomplete but most probably your full question was

which aqueous solution will have the highest melting point? assume all of the solute are nonvolatile and have ideal van't hoff factors. 0.100 m C₆H₁₂O₆ 0.100 m NaCl 0.100 m AlCl₃0.100 m MgCl₂

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The integral with respect to time of a force applied to an object is a measure called impulse, and the impulse applied to an object during a time interval determines its change in momentum during the time interval. The safety of a t-shirt launcher, used to help get crowds cheering at baseball games, is being evaluated. As a first step in the evaluation, engineers consider the design momentum of the launched t-shirts. The springs in the launcher are designed to apply a variable force to a t-shirt over a time interval of tL=0.5s. The force as a function of time is given by F(t)=at2+b, where a=28N/s2 and b=7.0N. The momentum of the t-shirt will be its initial momentum (p0=0) plus its change in momentum due to the applied impulse: pf=p0+t=tLt=0F(t)dt. By applying the given time dependent function for F(t) and performing the integration, which of the following is the correct expression for pf? fill in the blank. in the context of the ecological processes involved in the concentric zone theory,___refers to the process by which a new category of people or type of land use arrives in an area previously occupied by another group or type of land use. group of answer choices degrowth unionism invasion diffusion a student drove to the university from her home and noted that the odometer reading of her car increased by 8.00 miles. the trip took 20 min. (note: 1 mile Which of the following is a factor of 4x^{2} + 23x + 15A: (4x + 5)B: (2x + 3)C: (4x + 3)D: (2x + 5) the canadian shield surrounds a large portion of which body of water? the it department of maddison corporates has complained about a faulty fiber-optic cable as a result of which it is having connectivity issues within the organization. as a network engineer, you want to detect the faulty cable by searching for electrical signals in the cables located within the racks in the data room. which of the following instruments will you need in this scenario? 1. 49, 34, and 48 students are selected from the Sophomore, Junior, and Senior classes with 496, 348, and 481 students respectively. Identify which type of sampling is used and why2. The name of each contestant is written on a separate card, the cards are placed in a bag, and three names are picked from the bag. Identify which type of sampling is used and why3. An education expert is researching teaching methods and wishes to interview teachers from a particular school district. She randomly selects ten schools from the district and interviews all of the teachers at the selected schools. Does this sampling plan result in a random sample? Simple random sample? Explain.4. A polling company obtains an alphabetical list of names of voters in a precinct. They select every 20th person from the list until a sample of 100 is obtained. They then call these 100 people. Does this sampling plan result in a random sample? Simple random sample? Explain.5. The personnel manager at a company wants to investigate job satisfaction among the female employees. One evening after a meeting she talks to all 30 female employees who attended the meeting. Does this sampling plan result in a random sample? Simple random sample? Explain.Case Assignment Expectations:Use information from the modular background readings as well as any good quality resource you can find. Please cite all sources and provide a reference list at the end of your paper.The following items will be assessed in particular:Your ability to identify situations when sampling is appropriate.Your ability to draw the proper inferences about the population after the sample has been evaluated.Your ability to describe the process of selecting and evaluating a samp This is one half of a chromosome; a rod-like structure made of DNA and proteins A- write an expression for the number of tiles Bruce used and an expression for the number of tiles Felicia used. Use x to represent the number of tiles in a box. B- to determine whether the used the same number of tiles, set the two expressions equal to each other and solve for x. Is there a solution for x? Why or why not? If there is a solution, what is it? C- what conclusion can you draw from this? D- how could you change the equation from part B so it has infinitely many solutions? What would infinitely many solutions mean in terms of the situation? E- if the equation were 6x + 2 = 5x + 17, would there be one unique solution? What is it, and what would it mean in terms of the situation? the ethical communicator should be: a. respectful, enthusiastic and dramatic b. dishonest, passive and quiet. c. egalitarian, trustworthy and respectful. d. legal, logical and intelligent. ___Cr3+ + ___O2 ----> ___Cr2O3 What criteria and constraints do engineers need to consider when designing and consructing a physical reef model btw this is for science Which situation can be represented by y = 4x?Responses locke distinguishes between the identity conditions for a human and the identity conditions for a person. this distinction is: Look at the reference image. How are the drinking fountains different? How does this image make you feel? A fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. It takes 3.0 s for the boat to travel from its highest point to its lowest, a total distance of 0.69 m. The fisherman sees that the wave crests are spaced 8.0 m apart. (a) How fast are the waves traveling a conducting bar moves to the left at a constant speed v on two conducting rails joined at the left as shown. as a result of the bar moving through a constant magnetic field, a current i is induced in the indicated direction. which one of the following directions is that of the magnetic field? Firt column: Write your mot important learning about the Judicial Branch of Government Second column: Cite a political phenomenon related to your mot important learning Third column: How can you apply your mot important learning in analyzing the political phenomenon in econd column? Which of the 4 principles of medical ethics (respect for autonomy, beneficence, non-maleficence, or justice) is in question in the Exotic Dancer Case and why? Explain. A Search Distance Heuristic Homework. Unanswered o For each method - sometimes used as heuristic, what is the distance from start to end? (Ignore any coloring in the boxes) Drag and drop options on the right-hand side and submit. For keyboard navigation...Show More Manhattan Distance V41 Chebyshev Distance = Euclidean Distance = G = 9 = 7 Fullscreen