Xylem cells have thickened walls how does this thickening differ in the two xylem shown in the diagram

Answers

Answer 1

The secondary cell wall of the elongated, hollow xylem cells, which are dead, contains lignin.

What functions as the xylem?

The specialized tissue in vascular plants called xylem distributes nutrients and water from the plant-soil contact to the stems and leaves as well as serving as a mechanical support system and a storage system. One of the key characteristics that sets vascular plants apart is the xylem's ability to transmit water.

Where can you locate the xylem?

Vascular bundles, which are found in both non-woody plants and non-woody sections of woody plants, contain xylem. In woody plants, a meristem known as the vascular cambium lays down secondary xylem. as a component in a starry arrangement rather than a bundle, as in many ferns.

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Xylem Cells Have Thickened Walls How Does This Thickening Differ In The Two Xylem Shown In The Diagram

Related Questions

What is the molarity of a solution of 0.5 mol of Cu(NO3)2 in 0.5 L water?
OA. 2 M
OB. 1 M
C. 0.25 M
OD. 0.5 M

Answers

The molarity of a solution of 0.5 mol of Cu([tex]NO_3[/tex][tex])_2[/tex]in 0.5 L water is  1 M.

molarity of a solution of 0.5 mol of Cu([tex]NO_3[/tex][tex])_2[/tex] in 0.5 L water

as per statement , we have got

moles of Cu(NO3)2 = 0.5 mol

volume of solution = 0.5 L

now:

we use the formulae of molarity written as M

molarity = moles of solute / volume of solution

molarity = 0.5/0.5

molarity = 1 M

Molarity is defined as the number of moles of solute per liter of solution.molarity is a volume based concentration, as the temperature increases the volume increases and molarity decreases but the molality is not depend on volume is by the variation in temperature molality remins constant.

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PLS HELP ME WILL GOVE BRAINLIEST THIS IS URGENT
What we recall about an event is based on actual details of the particular event, plus______
A. Memory reconstruction
B. General knowledge
C. Expectations
D. All of the above

Answers

Answer:

A. Memory reconstruction

What is the energy of an electron in the n = 15 energy state?

A.) 4.91 x 10^-16 J

B.) 3.27 x 10^-17 J

C.) -1.45 x 10^-19 J

D.) Zero. The n = 15 energy state doesn't exist.

E.) -9.69 x 10^-21 J

Answers

E. The energy of an electron in the n = 15 energy state is determined as -9.6 x 10⁻²¹ J.

Energy of the electron in the n = 15 energy state

The energy of an electron in the n = 15 energy state is calculated as follows;

E = -13.6/n²

given n = 15

E = -(13.6/15²)

E = -0.06 eV

Energy of the electron in Joules

E = -0.06 x 1.6 x 10⁻¹⁹

E = -9.6 x 10⁻²¹ J

Thus, the energy of an electron in the n = 15 energy state is determined as -9.6 x 10⁻²¹ J.

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how many significant figures are contained in 38.7g, 2x10^18m, 3486002kg, 9.74150x10^4j, 0.0613cm^3,17.0kg, and 0.014g/mL

Answers

The number of significant figures contained in the following values are as follows:

38.7g - 32 x 10¹⁸m - 23486002kg - 79.74150 x 10⁴J - 60.0613cm³ - 317.0kg - 30.014g/mL - 2

What is significant figures?

Significant figures are digits that is meaningful with respect to the precision of a measurement.

Significant figures are digits that is nonzero, followed by a nonzero digit, or (for trailing zeroes) justified by the precision of the derivation or measurement.

According to this question, the number of significant figures contained in the following values are as follows:

38.7g - 32 x 10¹⁸m - 23486002kg - 79.74150 x 10⁴J - 60.0613cm³ - 317.0kg - 30.014g/mL - 2

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This problem has to be solved using algor mortis.

3. Approximately how long as the victim been dead if his body temperature was 85.2 F?

Answers

Answer:

The victim has been dead for approximately 12 hours.

Explanation:

Algor mortis, or the cooling of the body after death, is a reliable way to estimate time of death. The average body temperature is 98.6 degrees Fahrenheit, so 85.2 degrees Fahrenheit would be 12 hours after death.

If a space shuttle can travel 17,000 miles per hour, how many meters per second does it travel?

Answers

If a space shuttle can travel 17,000 miles per hour, then it can travel 7599.68 meters per second.

What is Miles per hour ?The unit miles per hour (which is also denoted by symbol: mph) is a measurement of speed in the United States of America primary systems. It expresses the number of miles one can travelled over the period given as one hour. One Miles per hour equals accurately 1.609344 Kilometers per hour (km/h).What is Meter per Second ?A meter per second (denoted as symbol: m/s) is an SI (International System of Units) denoted unit of speed and velocity. It is denoted as the distance travelled in meters upon the amount of time taken in seconds. It is equal to accurately 3.6 kilometers per hour. It is equal to accurately 3.2808 feet per second. It is equal to accurately 2.2369 miles per hour.

Now,

  2.2369 miles per hour = 1 meter per second

  Hence,

      17000 miles per hour = (17000/2.2369) meter per second

                                           =  7599.68 meters per second.

Thus , from the above conclusion we can say that If a space shuttle can travel 17,000 miles per hour, then it can travel 7599.68 meters per second.

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Which graph represents an exothermic reaction?

Answers

Answer:

This one also it is opposite of endothermic reaction

Marjorie is trying to determine the identity of an unknown substance. After running tests, she determines that the substance is insoluble in CCl4 with a density of about 2.2 g/mL. Substance Density Boiling Point Solubility (in water) Solubility (in CCl4) NaCl 2.165 g/mL 1413°C soluble insoluble C10H8 1.14 g/mL 255°C insoluble soluble FeCl3 2.898 g/mL 315°C soluble insoluble SiO2 2.634 g/mL 2590°C insoluble insoluble Using the data above, which of the following substances is most likely Marjorie's unknown? A. FeCl3 B. NaCl C. SiO2 D. C10H8

Answers

Marjorie's unknown substance is sodium chloride NaCl.

The substance is insoluble in CCl₄. The density of the substance is 2.2 g/mL.

Solubility:

The fact that the chemical is insoluble in CCl₄ (tetrachloromethane), as indicated in the statement, indicates that the substance is polar in nature. Only C₁₀H₈ of the choices is soluble in CCl₄ since they are both non-polar by nature and related substances dissolve similarly. C₁₀H₈ is therefore disregarded.

Density:

There are now only three possibilities left. SiO₂, FeCl₃, and NaCl. The student discovered that the material has a density of 2.20 g/ ml. This is quite similar to sodium chloride's density (i.e., 2.165 g/mL). As a result, sodium chloride is most likely the material the student is working with.

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A pushing force of 7 N to the right is applied to a book on a table. A frictional force of 3 N is applied in the opposite
direction. In which direction will the book move? (1 point)
O The book will move to the left.
O The book will move to the right
O More information is needed.
O The book will stay stationary.

Answers

The book will move to the right.

Hope this helps! Also, if you need help with the other questions regarding this assignment, feel free to check out the study set I made on Quizlet. Thanks and good luck!

Quizlet - "Unit 6: Lesson 2 Newton's First Law QC"

h t t p s : / / q u i z l e t. c o m / 7 3 7 7 5 9 5 5 5 / u n i t - 6 - l e s s o n - 2 - n e w t o n s - f i r s t - l a w - f l a s h - c a r d s / ? n e w

If two forces acts in opposite directions on an object, they will cancel each other in magnitude. Thus if 7N force is applied to the right and 3 N to the left, the net force will be 4 N to the right. Hence, option b is correct.

What is force?

Force is an external agent acts on a body to change it from the state of motion or rest. There are various kinds of force namely, frictional force, gravitational force, nuclear force, magnetic force etc.

The force acting on a body to displace from one position to other is called normal force. Frictional force is resistive force which resist the motion of a body.

If two force are acting on a body in same direction, then the resultant force be the sum of magnitudes of these force. If they are acting in opposite direction then the force will be cancelled from each other

Hence, Net force is the difference in magnitude and the direction of net force is the direction of the force which was greater in magnitude.

Therefore, here the net force on the body which undergone two opposite force of 7N to right and 3N to left is 4N to the right.

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Pb + PbO2 + 2H2SO4 → 2PbSO4 + 2H2O

What is the mole ratio of PbO2 to water

Answers

The mole ratio of PbO2 to water is 1:2.

The mole ratio of PbO2 to water, PbO2:H2O, is 1:2 when the reaction stoichiometry is taken into consideration.

The appropriate reaction is:

2 PbSO4 + 2 H2O ⇒ Pb + PbO2 + 2 H2SO4

The following numbers of moles of each component are involved in the reaction according to reaction stoichiometry, which describes the relationship between the amounts of reagents and products in a chemical reaction:

1 mole Pb

1 mole of PbO2

H2SO4: 2 mol

2 moles of PbSO4

Water: 2 moles

Then, you can see that according to the reaction's stoichiometry, 1 mole of PbO2 produces 2 moles of water (H2O).

Therefore,the mole ratio of PbO2 to water is 1:2.

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How I can convert 7 Ms to s

Answers

Answer:

Divide the time value by 1000

Explanation:

7 Ms = 0.007s

the local high school recently passed a rule reducing how much teachers can count homework as a part of a student's grade. Consequently, a larger portion of the students stop doing their homework. A teacher there decides to conduct there experiment. All of his classes get an optional ''test guide'' to help them study for their test.

Answers

The independent variable is the use or absence of the test guideThe dependent variable is the overall performance in the academic yearThe control group is the group that did not use the test guidesThe experimental group is the group that used the test guidesThe constants are the method of instruction, the structure of the test and the difficulty of the test.What is an experiment?

An experiment occurs when we want to study the relationship between the dependent and the independent variable. We know that the independent variable is the variable that is manipulated in the experiment and the dependent variable variable is the variable that undergoes a change as we change the independent variable.

It must be known that an experiment is the only way that we could be able to establish a cause and effect relationship. In other words, the results of an experiment tell us categorically if the effect owes to a supposed cause as was captured in the hypothesis of the experiment.

In this case we have the following in this experiment;

The independent variable is the use or absence of the test guide

The dependent variable is the overall performance in the academic year

The control group is the group that did not use the test guides

The experimental group is the group that used the test guides

The constants are the method of instruction, the structure of the test and the difficulty of the test.

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Missing parts;

The local high school recently passed a rule reducing how much teachers can count homework as part of a student's grade. Consequently, a larger portion of the students stop doing their homework. A teacher there decides to conduct an experiment. All of his classes get an optional "test guide" to help them study for their tests. He allows two classes to use the "test guides" (that they must fill in and complete) on their exams. He hypothesizes that students will complete the test guides and learning will occur from filling them out. In his other 2 classes, the teacher does not allow students to use test guides on the exam, and consequently very few of them filled them out. After the 2017-2018 year is over, he wants to compare scores between the 4 classes on the final exam to see if allowing students to use test guides during each test throughout the year improved their later overall performance.

Independent Variable: _____________________________ Dependent Variable: ___________________________________

Experimental Group: _______________________________ Control Group: _________________________________________

3 constants: ______________________________________________________

state the types of matter ​

Answers

Answer:

they're

Explanation:

solid, liquid and gas

What is the density of a metal block that has a mass of 250.00 grams and the length is 16.25 cm, the width is 2.30 cm, and the height is 6.00 cm?

Round to the correct number of significant figures. Do not include the unit in the answer.

Answers

The density of a metal block that has a mass of 250.00 grams and the length is 16.25 cm, the width is 2.30 cm, and the height is 6.00 cm is 1.11.

What is density?

Density can be defined as the measurement of how tightly a material is pecked together. It is defined as mass per unit volume.

Its SI unit is g/cm3 .

Density can be expressed as

Density = mass/ volume  

Volume of metal block = length x width x height

                                      = 16.25 x 2.30 x 6.00

                                      = 224.3  ml

Density = 250.0 / 224.3 g/ml

             = 1.11 g/ml

Thus, the density of a metal block that has a mass of 250.00 grams and the length is 16.25 cm, the width is 2.30 cm, and the height is 6.00 cm is 1.11.

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Matter can change state when ______ energy is ______ into or out of the ______.
Fill in the blanks.
Thank you

Answers

Matter can change state when thermal energy is absorbed into or out of the body.

What energy is used to change the state of matter?

Changing states of matter occur when matter loses or absorbs thermal energy. When a substance absorbs energy, the atoms and molecules move more fast which increases kinetic energy of the atoms that pushes particles far enough from each other which resulted in the change of form. This energy which changes the state of matter is the heat or thermal energy. We know that thermal energy increases kinetic energy so that's why the heat energy changes state of matter.

So we can conclude that Matter can change state when thermal energy is absorbed into or out of the body.

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Explain why pure iron is malleable

Answers

Answer:

Metals are malleable : They can be bent and shaped without breaking. This is because they consist of layers of atoms that can slide over one another when the metal is bent, hammered or pressed.

Explanation:

Pure iron is a bright silvery white metal which oxidizes (rusts) rapidly in moist air or in water containing dissolved oxygen. It is soft, malleable, and ductile, and is strongly magnetic (ferromagnetic).

How does this illustration demonstrate nonverbal communication? What messages are being communicated?

Answers

In the first picture, the person seems nervous and lacks confidence while in the second one the person appears confident.

Nonverbal communication is the transfer of information through body language, facial expressions, gestures, created space, and more.

body language is essential as it makes the communication process more efficient.

facial expression depicts the nervousness and confidence of the person.

gestures involve hand movements.

In the first picture, we can see that the person's posture is bent and looking below.

In the second picture, the person has a straight posture and looks parallel.

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Gelatinous precipitate such as Aluminium hydroxide are best filtered using O a. ashless filter paper b. ash filter paper O c. oxalate d. sintered glass crucible.​

Answers

Ashless filter paper is the correct option.

The process of turning unusable water into drinkable (potable) water is known as water purification. Since water creates an excellent solvent, getting pure water without treatment is challenging.Coarse filtering is used in the initial stage to get rid of big foreign objects. By letting the water pass through a mesh screen, this is accomplished. Sedimentation is the subsequent phase. To allow for the separation of tiny particles, the water is left to stand. Aluminum sulfate and calcium oxide in the water help in this process. Aluminum hydroxide reacts with some of the water to generate a gelatinous substance. The slow-moving gelatinous precipitation drags down particles as it settles.Following aeration, the water is filtered through a fine sand bed to oxidize dissolved organic molecules. Sterilization of the water is the last step. This is frequently done by bubbling chlorine gas through the water, which creates a mild acid that kills any germs that are still present. In this procedure, ozone can also be employed in place of chlorine.

Therefore, option a. is correct.

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Why can’t calcium ,CA, be broken down into a simpler substance?

Answers

Because CA is an element, elements are one atom which cannot be broken down further.

In the model below, what do the green spheres represent?

Nucleus
Protons
Neutrons
Electrons

Answers

Answer:

They represent electrons

Explanation:

an iron ( Fe ) bar that loses 2.42 kJ when its temperature decreases from 252 ∘C to 79 ∘C

Answers

The calculated mass is 35.6.

The movement of minuscule atoms, molecules, or ions in solids, liquids, and gases produces heat energy. From one thing to another, heat energy can be exchanged. Heat is the flow or transfer that occurs as a result of the temperature differential between two objects.

Q = m*c*ΔT,

ΔT = Initial T - Final T

For iron, the specific heat capacity is 0.450 J/(g°C) and ΔT Q is the heat energy in calories (2.92 KJ = 2920 Joules).

The mass of water is m.

The values 2920 J= m* 0.450 J/g°C * are entered (254 °C-72 °C)

The solution is mass=2920 J/ 0.450*180°C

mass = 35.6.

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Write the name of the alkane with six carbon atoms

Answers

Hexane is an alkane with six carbon atoms.

Hexane is an organic substance having the chemical formula C6H14. It is a straight-chain alkane containing six carbon atoms. When pure, it is an odorless, colourless liquid with a boiling point of roughly 69 °C (156 °F). It is a broadly applicable non-polar solvent that is quite safe, mainly unreactive, affordable, and easily evaporable.

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How many moles of ethylenediamine (H2NCH2CH2NH2) are contained in 10.4 ml of 25% ethylenediamine solutions? The density of the solution is 0.950 g/mL.

Answers

Moles of ethylenediamine contained in 10.4 ml of 25% ethylenediamine solutions is 0.0388 moles

What is mole?

A mole is defined as 6.02214076 × 10²³ of some chemical unit, be it atoms, molecules, ions, or others.

Given:

volume=9.8 mL

Density= 0.960 g/mL

Percent concentration of solution= 25%

mass of nickel chloride=1.85 g

mass = density * volume

mass = 0.950 g/ml * 9.8 ml

mass = 9.31g

Since it is a 25 % solution of Ethylenediamine

mass of  ethylenediamine in 25 moles

moles of ethylenediamine = [tex]\frac{2.33g}{60g/mol}[/tex]  =0.0388 moles

Thus, Moles of ethylenediamine contained in 10.4 ml of 25% ethylenediamine solutions is 0.0388 moles.

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PLEASE HELP ME I AM STRUGGLING SO BADLY ACELLUS
What is the energy of an orange lamp with a frequency of 5.10 x 10^14 Hz

? X 10^? <----- ANSWER LIKE THAN PLEASE

Answers

The energy of an orange lamp with a frequency of 5.10 x 10¹⁴ Hz is 5.88 x 10⁻⁷ is 3.38 x 10⁻¹⁹ J.

Frequency is defined as the number occurrences of repeated events per unit of time. SI unit is hertz (Hz).

Using the formula,

                    E = hν

where,

E = energy in joules (J)

h = Planck's constant =  6.63 x 10⁻³⁴ Js

ν = frequency in hertz

Given :

frequency = 5.10 x 10¹⁴ Hz

h = 6.63 x 10⁻³⁴ Js

Putting the values,

E = (6.63 x 10⁻³⁴) x (5.10 x 10¹⁴) J

E = 3.38 x 10⁻¹⁹ J

Therefore, the energy of an orange lamp with a frequency of 5.10 x 10¹⁴ is  3.38 x 10⁻¹⁹J.

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4. A steel ball has a diameter of 0.750 cm and weighs 1.765 g. What is its density in grams
per cubic centimeter?

Answers

Taking into account the definition of density, the density of the steel ball is 7.99 g/cm³.

Definition of density

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space and it allows us to measure the amount of mass in a certain volume of a substance.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density= mass÷volume

Density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

Density in this case

In this case, you know that:

Mass= 1.765 gDiameter of steel ball= 0.750 cmRadius of a steel ball= diameter of steel ball÷2= 0.375 cmVolume of a steel ball= Volume of a sphere= 4/3×π×r³= 4/3×π×(0.375 cm)³= 0.2209 cm³

Replacing in the definition of density:

density= 1.765 g÷0.2209 cm³

Solving:

density= 7.99 g/cm³

In summary, the density of the steel ball is 7.99 g/cm³.

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A __________ is a piece of land that is formed when a river splits into smaller rivers before flowing into an ocean.

butte
delta
glacier
hill

Answers

Answer: A) Delta

Explanation:

A river delta is a landform shaped like a triangle, created by deposition of sediment that is carried by a river and enters slower-moving or stagnant water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or another river that cannot carry away the supplied sediment.

Hope this helped!

Based on your reading you know that one elements on the periodic table are listed in order of their atomic numbers. If scientists didn't use that method, hypothesize another wav the periodic table could be organized in an orderly fashion. Write your answer below.

CAN YOU HELP ME RIGHT NOW PLEASE, THANKS YOU

Answers

An alternative method for the arrangement of elements is by the use of atomic masses of the elements.

What is the periodic table?

The periodic table is an arrangement of elements based on increasing atomic number. This is what is called the modern periodic law. Before the advent of the current periodic table, there have been many other kinds of periodic table.

In the periodic table as it is now, there are about 118 elements that are arranged in groups and periods. The groups contain elements that are chemically similar and could react in the same way while the periods contain elements that have the same number of shells.

However, we know that an alternative method for the arrangement of elements is by the use of atomic masses of the elements. This was the method that was used arrange the old periodic table. However, this method did not account for periodic trends.

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Whats oxide element name

Answers

Answer: Oxide anion. Oxide ion. Atomic oxygen(2-) Oxygen, ion(O2-)

Description: Oxide(2-) is a monoatomic oxyge...

Molecular Formula: O-2

Synonyms: oxideoxide(2-)16833-27-5Oxide a...

Molecular Weight: 15.999

Explanation: I hope this helps.

What is the weighted average of a nail in the sample data given

Answers

Answer:

11.176

Explanation:

Pls help which of the following statements is true

Answers

A. None are correct.

Explanation:

Proton has positive charge and mass too.

A neutron is chargeless and has mass as well.

An electron has negative charge and has mass.

The atomic number of carbon is 6.

Hence none are correct.

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What type of decision is the following: how many temporary employees do we need to hire for cyber monday? Which sentence is the most effective thesis?A. "The Nose" is a short story that is just one part of a larger genre ofliterature.B. The main character in "The Nose" reacts unrealistically to his nosedisappearing.C. Magical realism is an important genre of literature, and "The Nose"is an example.OD. The author of "The Nose" achieves a magical realist tone in threeimportant ways. You can mix ntfs permissions and share permissions on the same system. True or false which of the following statements best describes the electric field in the region between the spheres? On Monday, Saffron bakes324 pastries in the morning and some more in theafternoon. She sells 584 pastries. At the end of theday she has 52 pastries left. How many pastries didshe bake in the afternoon? The division of labor makes production more efficient by:O A. giving all employees a wider range of skills.B. splitting large jobs into many smaller tasks.C. reducing the materials needed for production.D. lowering hourly wages for all employees. psychologists who take the cognitive approach to personality would suggest that aggressive behavior is learned because it has been rewarded. A country can have a(n) ______ with a trading partner in the production of both goods, but it cannot have a(n) ___________ in producing both goods. The bar graph displays data on the numbers of babies born each day of the week in the United States in a recent week.All data in the graph are approximate.Which of the following choices gives the most complete description of the information presented in the bar graph?Births occurred with similar frequencies on the week days (Monday through Friday), but with noticeably smaller frequencies on the weekend days (Saturday and Sunday).Births occurred with similar frequencies, regardless of the day of the week.Births occurred with the lowest frequency on Sundays.The minimum number of births appears to be approximately 7000, which occurred on Sunday. The maximum number of births appears to be approximately 13,000, which occurred on Tuesday.Week day births seem to be twice as common as weekend births. in many cases, the measurement of an individual's resting metabolic rate may not be possible. what could be an inexpensive alternative to determine an individual's rmr? Reflect ABC over the y-axis and then translate by(2, -3). True or false: assets are claims (by creditors) against the company. Which value dimension is most important? cost quality delivery agility innovation it depends The element of the audit planning process most likely to be agreed upon with the client before implementation of the audit strategy is the determination of the? stress is often defined as the result of conflicts with superiors or the apprehension associated with performance evaluation. if a single charge creates an electric field, what happens when someone adds another charge? physicists add the fields from the two charges - but since the electric field is a vector field, this requires vector addition. add the vectors 5 2 and 4 6. what is the x component of the resulting vector? Given 33.8 2.5, find the product. (4x-1)(3x^2+3x-5) (4x1)(3x 2 +3x5) What is the primary way that metamorphic rocks form? for each example, determine how the market for the good in bolded text will respond to the described change.