The half life of rubidium 87 is about 48.8 billion years

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Answer 1

you are missing a part of the question i believe?


Related Questions

Valid reasons why a company should definitely open a new production facility in latin america include

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The valid reason is; the ability to earn bigger profit margins per branded pair sold in Latin America than in either Europe-Africa or Asia pacific.

What are the benefits of new production facility?

The valid reasons why a company should definitely open a new production facility in latin america is because of the ability to earn bigger profit margins per branded pair sold in Latin America than in either Europe-Africa or Asia pacific regions.

The reason for that answer is because of pure business decision which is to make profits.

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Which situation would most likely be a driving force for changes in a species?

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A situation which is most likely to be a driving force for changes in a species is increased mating events due to environmental stability.

What is a species?

A species can be defined as a biological classification of related organisms that have similar characteristics and they are capable of mating (breeding) with one another in a cycle or different seasons.

This ultimately implies that, increased mating events between living organisms due to environmental stability is a situation which is most likely to be a driving force for changes in a species.

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In exercises 7–14, either use an appropriate theorem to show that the given set, w, is a vector space, or find a specific example to the contrary.

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A theorem in mathematics is the statement that has been proved it van be proved to be true.

What is a theorem?

Your information is incomplete. Therefore, an overview will be given. A theorem simply means a statement that can be demonstrated to be true based in mathematical proportions and arguments.

A vector space is simply the set of objects called vectors that can be added together and multiplied by numbers that are called scalars. An example is a² + b² = c² for a right angled triangle.

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A rock is dropped from a sea cliff, and the sound of it striking the ocean is heard 3.4 s later. if the speed of sound is 340m/s how high is the cliff?

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The total time of 3.4 seconds includes the time the rock falls and the time it takes for the sound wave to return to the top of the cliff.

Where d is the height of the cliff in meters, the falling time is

=29.8‾‾‾√
t
f
=
2
d
9.8

... and the sound wave return time is

=340
t
s
=
d
340

We need to set the sum of those two components to 3.4 sec and solve.

3.4=+
3.4
=
t
f
+
t
s

3.4=29.8‾‾‾√+340
3.4
=
2
d
9.8
+
d
340

Not a pretty formula. I found d =51.69+
51.69
+
meters using goal seek. At that height, the rock would fall for 3.25 seconds, and the sound would return in 0.15 seconds, for a total time of 3.40 seconds.

What are the two basic dimensions of the emotional circumplex model?

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The two basic dimensions of the emotional Circumplex model include the valence factor and activation (arousal) factor.

What is the emotional Circumplex model?

The emotional Circumplex model is a concept idea indicating that feelings have two different dimensions.

In the emotional Circumplex model, these dimensions are composed of arousal (activation) and valence.

Arousal (activation) is diagramed on the vertical axis and valence can be diagramed on the horizontal one.

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There are 12 of the zodiac. how many people are needed to guarantee that at least six of these people have the same sign? your answer must be one integer.

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Answer:es, the answer is 61. This is related to a mathematical principle called the Pigeonhole Principle, which states that if you are trying to sort  n+1  objects into k sets (where nk=r;n,k,r∈Z+), at least one set must contain at least r+1 objects. (This can be proven by proof by contradiction, but is pretty standard and so generally can just be used as justification of an answer by itself.)

For your problem, you have 12 signs of the zodiac - these are your 12 sets (so k=12). You are looking to find how many it takes before a set contains 6 objects (so r+1=6 and thus r=5). Therefore, n+1=r×k+1=12×5+1=61.

Explanation:

Which term identifies a type of intermolecular force?

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A terminology which is used in science to identify a type of intermolecular force is hydrogen bonding.

What is hydrogen bonding?

Hydrogen bonding can be defined as a weak type of chemical bond (intermolecular force) that typically exists between a partially positively charged hydrogen atom and an electronegative chemical atom.

Generally, a hydrogen bond has the strongest intermolecular force of attractions but it is weaker than that of an ionic bond or covalent bond.

In conclusion, hydrogen bonding is a terminology which is used in science to identify a type of intermolecular force.

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Prior to the 1860s, adolescence was not seen as a separate life stage.

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It is a true statement that prior to the 1860s, an adolescence was not seen as a separate life stage.

What was the adolescent situation prior to 1860s?

Prior to 1860s, people were usually only separated into either kids or adults.

Thus, it meant that the Kids in adolescence age already carried the burden equivalent to those of adults in this modern day.

Therefore, we can conclude that is a true statement that prior to the 1860s, an adolescence was not seen as a separate life stage.

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Write an inverse variation equation that relates x and y

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x . y = 10 hope this helps

Which equation is y = 6x2 + 12x – 10 rewritten in vertex form? y = 6(x + 1)2 – 11 y = 6(x + 1)2 – 10 y = 6(x + 1)2 – 4 y = 6(x + 1)2 – 16

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Which equation is y = 6x2 + 12x – 10 rewritten in vertex form? y = 6(x + 1)2 – 11 y = 6(x + 1)2 – 10 y = 6(x + 1)2 – 4 y = 6(x + 1)2 – 16

Explanation:bc irdk

y = 6(x + 1)2 – 11 y = 6(x + 1)2 – 10 y = 6(x + 1)2 – 4 y = 6(x + 1)2 – 16.

What is Vertex form?

There are many different ways to define an equation. The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions.

For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign. Mathematical algebraic equations typically have one or more variables.

Equations are frequently utilized in daily life, but they are most frequently used in science and numerous math applications. For instance, a grocery store can apply an algorithm to determine the price of an item that is 50% discounted.

Therefore, y = 6(x + 1)2 – 11 y = 6(x + 1)2 – 10 y = 6(x + 1)2 – 4 y = 6(x + 1)2 – 16.

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If 384 ft of fencing is available and the maximum area is desired, what will be the dimensions of the larger, outer rectangle? (ii) what will be the dimensions of the smaller holding pens?

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The dimensions of the smaller holding pens from the parameters given are; 96 ft and 31 ft

What dimensions will maximize the area?

From the complete question, if the side lengths of the big rectangle are x and y, then the expression for the area A is:

A = x*y

Then perimeter since we have 384 ft of fencing available is;

2x + 2y = 384  

y = (384 - 2x)/2

y = 192 - x

Put 192 - x for y in area formula;

A = x(192 - x)

A = 192x - x²

Completing the square of this are equation gives;

A = 9216 - (x - 96)²

This means that A is maximum at x - 96 = 0

Thus, A is maximum when x = 96 ft

At A_max; y = 192 - 96 = 96 ft

Since the area of the bigger rectangle has been maximized, it means that we have also maximized the area of the smaller pens. Therefore its' dimensions will be;

x_small = 96 ft/3 = 31 ft

y_small = 96 ft

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Writing explain how to rewrite a percent as a decimal. then rewrite 48% as a decimal.

Answers

Answer:

0.48

Explanation:

Complete the equilibrium reactions which are pertinent to an aqueous solution of ag2co3. physical states are optional.

Answers

The equilibrium reactions pertinent to an aqueous solution of Ag2CO3 in which physical states are not considered is:

[tex]\mathbf{Ag_2CO_{3 \ (s)} \rightleftharpoons 2Ag^{+}_{(aq)} + CO_3^{2-}}[/tex]

What are equilibrium reactions?

An equilibrium reaction is a chemical reaction process in which the reactants remain in a steady and stable condition both previously(reactant) and after the reaction is completed(product).

A reaction is considered to be at thermodynamic equilibrium when a reaction meets all three categories of equilibrium;

Equilibrium of temperatureEquilibrium in the chemical reaction.Equilibrium with the surrounding factors like pressure.

The equilibrium reactions pertinent to an aqueous solution of Ag2CO3 is:

[tex]\mathbf{Ag_2CO_{3 \ (s)} \rightleftharpoons 2Ag^{+}_{(aq)} + CO_3^{2-}}[/tex]

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What ethical issues did the product ford pinto violated explain brainly

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Answer:

Practically, the cause of the disagreement was the criticism of Ford leaders as responsible for unethical decision-making that put the consumers in danger for the sake of financial benefits. The case of the Ford Pinto violated many types of laws; three of them are criminal law, consumer protection law, and tort law.

Explanation:

Giant kelp which can grow up to 60 meters are known as jiskha

Answers

Giant kelp which can grow up to 60 meters are protist.

How many meters can giant kelp grow?

It can grow as much as 53 m. Note that Giant kelp often grow to about 100 feet (30 m) and its limits in terms of lengths is about 175 feet (53 m).

Macrocystis pyrifera is known to be a type of a fastest-growing organisms that can be seen on Earth whose length is about 45 m (150 ft).

See full question

Giant kelp, which can grow up to 60 meters, are known as (1 point)

vascular plants.

protists.

nonvascular plants.

fungi.

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Across the sdlc phases which among these activities see a substantial amount of automation

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Can you please list the answers in which you stated, “which among these.”

The gulf stream the world's fastest ocean current flows along the western side of this water body

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The Gulf stream, which is the world's fastest ocean current flows along the western side of this water body called the North Atlantic Ocean.

What is the Atlantic Ocean?

The Atlantic Ocean can be defined as one of the largest water body (ocean) in the world with an area of approximately 106,460,000 square kilometers. Also, it has been measured by oceanographers and scientists as covering approximately 20% of Earth's surface while it also cover about 29% of its water surface area.

Based on scientific information, the Gulf stream, which is the world's fastest ocean current flows along the western side of this water body called the North Atlantic Ocean and this is where the  Atlantic Ocean connects to the Arctic Ocean in the North.

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What is the equation of the line that passes through the point (-1,9) and is parallel to the line y=-5x+7?

Answers

Answer:

Y=5x+14

Explanation:

here, x=-1 y= 9

the equation of the line in slope intercept form is

y=mx+b

the slope(m)= 5

y intercept (b)= 7

note that slope of parallel lines are the same

then the equation

y= mx+b

substituting

9= 5(-1)+b

9 = -5+b

9+5 =b

14 = b

b= 14

therefore, y intercept of the parallel line will be 14.

finally, the equation of the parallel line will be

Y= 5x+14

PLEASE RATE AND MARK BRIANLIEST!!!!!!!

Invisible lines that run east to west, parallel to the equator. the most important factor affecting climate.

Answers

Lines of latitude refers to the invisible lines that run east to west and are also parallel to the equator.

What are Lines of latitude?

This is referred to an imaginary line which divides the Earth. They run from east to west and are parallel to the equator.

As latitude increases, the intensity of the solar energy reaching an area decreases thereby leading to a cooler climate and vice versa.

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The kind of weathering caused by water freezing in rocks is known as

Answers

Answer:

frost weathering or cryofracturing

Explanation:

When ice melts, liquid water performs the act of erosion by carrying away the tiny rock fragments lost in the split.

The molecule cyanazine, once used as an herbicide, has now been phased out by the epa because of its significant human toxicity. add lone pairs, as needed, to the structure of cyanazine.

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For the molecule cyanazine, the hybridization of atom 1 would be a sp³ hybridization when lone pairs are added.

What is hybridization?

Hybridization is a phenomenon in chemistry which involves the linear combination of two (2) or more atomic orbitals of a molecule or chemical compound, in order to form the same number of hybrid orbitals, with each of the orbital having equal amount of energy and the same shape.

Since nitrogen (N) in cyanazine is bonded with three (3) single bonds, two carbon (C) and one hydrogen (H) bond, we can deduce that the hybridization of atom 1 would have a sp³ hybridization.

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What is the ph of a solution made by mixing 30.00 ml of 0.10 m acetic acid with 50.00 ml of 0.100 m koh? assume that the volumes of the solutions are additive. k a = 1.8 × 10-5 for ch3co2h.

Answers

Given 30.00 ml of 0.10 m acetic acid and 50.00 ml of 0.100 m koh, the pH of the solution is 12.40

What is the pH of a substance?

This is the measure of the acidity or the basicity of an aqueous or liquidsolution.

The details that are contained in this question are:

Mole of CH3COOH = 0.1 M

Volume of CH3COOH  = 30 mL

Mole of KOH = 0.1 M

Volume of KOH = 50 mL

mol of (CH3COOH) = 0.1 Mole * 30 mL = 3 mol

mol of (KOH) = 0.1 Mole * 50 mL = 5 mol

From the solution above,

mol of CH3COOH = 3 mol

mol of KOH = 5 mol

3 mol of both substances is going to react

excess KOH remaining = 5 - 3 =  2 mmol

Volume of both Solutions

= 30 + 50 = 80 mL

OH⁻ = 2/80

= 0.025 M

use:

pOH = -log [OH-]

= -log (0.025)

pOH = 1.602

PH = 14 - pOH

= 14 - 1.60

= 12.40

The calculated pH is therefore 12.40

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What can be inferred from the excerpt? nonstandard forms of english can be as effective as the standard form of english. nonstandard forms of english limit a speaker’s ability to stand up for herself. nonstandard forms of english make communication difficult between cultures. nonstandard forms of english are used more by older adults than by younger adults.

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The statement 'nonstandard forms of English can be as effective as the standard form of English' can be extracted in the excerpt from "Mother Tongue".

What is a mother tongue?

A mother tongue refers to a special language spoken by society and adopted as its own by its habitants.

There are many countries around the world that adopted English as their mother tongue and expressions in such countries may be certainly effective.

Mother tongue makes also reference to the language which an individual speaks from his/her childhood.

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Answer: A

Explanation: on edge

What information is not included in a company's prospectus brainly

Answers

A company's prospectus is any legal document that provides information and full details of the company.

The information in a company's prospectus

The question is incomplete, so I will list the information is a company's prospectus, instead.

The information include:

The company's management and their experienceBrief summary of the company's backgroundThe years of company's establishmentCompany name The company's principalsetc...

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Answer:

the information that is not included in a company's prospectus is the company's guaranteed earning potential.

Explanation:

In a company's prospectus, its assets, net worth, and annual revenue are included in the document but not their guaranteed earning potential.

Is this excerpt from president obama’s speech an example of argument or persuasion? provide at least two reasons to support your answer. answer in complete sentences.

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The speech that was given by President Barack Obama is known to be an example of Persuasion speech.

What was the speech about?

Using the excerpt, the President is said to be making a kind of persuasion speech as he wants to convince the American people to convince the people to be more better citizens.

The use of persuasion is often common in speech when you want to alter the state of the mind of the people. This can be seen in this Obama's speech.

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Ad←→ is tangent to circle b at point c. what is the measure of ∠bca? 40º 50º 90º 180º circle b with radius b c. line tangent to chord c has points d a c in that order. segments are drawn from the center to each point

Answers

Answer:

90

Explanation:

I took the test for it

Answer:90 degrees

Explanation:

it looks like a 90 degree angle ☠️

Roosevelt’s primary purpose in this part of the speech is to the audience.

Answers

Answer:

to inspire

Explanation:

Roosevelt’s primary purpose in this part of the speech is to inspire the audience.

What is the ultimate purpose of Roosevelt?

The ultimate purpose of Roosevelt is to urge Congress and declare war on Japan. This is due to the fact that Congress did this almost immediately after Roosevelt's speech. The second and most important goal of Roosevelt is to convince Americans to support the war effort.

According to the context of this question, Roosevelt inspire the public to act and to move as one and be united. He is also encouraging patriotism in his people among the entire nation. He persuades the people of America to continue to conserve resources, work hard, and play a role in assisting the common cause.

Therefore, Roosevelt’s primary purpose in this part of the speech is to inspire the audience.

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Your question seems incomplete. The most probable complete question is as follows;

Roosevelt’s primary purpose in this part of the speech is to (blank) the audience.

inspire.desperate.motivate.dedicate.

Drag the labels to show how the glucose and hormone levels will change in each mouse after they are joined by parabiosis. labels may be used once, more than once, or not at all

Answers

The labels that will show how the glucose and hormone levels will change in each mouse after they are joined by parabiosis are:

Those of db/db are:

The glucose level: stays the same.The hormone level: decreases.

Those joined by parabiosis which are Wild type:

Glucose level: stays the sameHormone level: decreases

What is the use of parabiosis to evaluate hormone function?

Parabiosis is known to be a useful and effective tool to examine hormone function.

This is b because it allows the exchange of long-lived molecules (such as hormones) to take place between the two joined organism. Therefore, the glucose levels of each mouse can stay the same, but the hormone levels will be altered.

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The octet rule states that in chemical compounds atoms tend to have the electron configuration of a

Answers

The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons, and thus the electron configuration of a noble gas. An exception to an octet of electrons is in the case of the first noble gas, helium, which only has two valence electrons.

A security camera in a neighborhood bank is mounted

Answers

Answer:

To keep an eye on where you live... To keep your neighborhood safe...

Explanation:

I hope this helps you! :)

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A sales representative is paid a commission of N5 on every N100 sale he makes. If his commission for the week is N10,000.00, how much sales has he made Please help me . 8,10,11! Which u. S. State holds the record for the oldest living trees?. 3 X-5y= -3 3x-5y=11please show work if you wake up, you see sun rises. (if sentence) A bird flies up and then down again, approximately following theparabola y = -0.5x^2 + 15x. y measures height in feet.Approximately what is the highest height that the bird flew to? Which literary device helps add depth to characters by showing previous events? What is one difference between renewable and nonrenewable resources?Provide one example of a renewable energy source, and one example of a nonrenewable energy source.Use these sentence starters to help you:One difference between renewable and nonrenewable energy sources is _______________.One example of a renewable energy source is ___________. Idc about this question, someone answer the question before this plsss, but here, math problem for fun:Graph this and simplify it >:):4x - 8x + 6x^2 - 28x + 7y + (y - 4)^2 - 20y = (y + 5 - x)^2 Help a fella out :))))))) i need more help on these questions please pls solve the following math from trigonometry im confused i need helo How many moles of water (H20) are produced when 2 moles of KMnO, react with plenty of HCI? Show work if can will give most points :) !! You go to the Yellowbox to get 5 rentals for the weekend. Movies rent for $2 and video games rent for $3. You end up spending $13Be sure to answer EACH of the following parts below: Define your variables. Write a system of equations that describes the number of movies and video games rented. Solve the system. Show all of your steps..How many of each item did you rent? What is Limit of 4 Superscript x Baseline cosine (pi x) as x approaches negative 2?168StartFraction 1 Over 16 EndFractionStartFraction 1 Over 8 EndFraction A student knows the mass of one of the reactants of a chemical reaction and wants to calculate the mass of one of the products of the reaction. which process should the student follow? what features do paramecia and salamanders share? An older client presents to the emergency department with a 2-day history of cough, pain on inspiration, shortness of breath, and dyspnea. The client never had a pneumococcal vaccine. The client's chest x-ray shows density in both bases. The client has wheezing upon auscultation of both lungs. Would a bronchodilator be beneficial for this client HURRY!!Many of those charged with a crime, arrested, and awaiting trial are released after posting _____.A. probationB. a deed to their propertyC. bailiffsD. bail