The half-life of protactinium-226 is 2 minutes. If you started with 20 grams of pa-226, how much do you have after 8 minutes?.

Answers

Answer 1

Answer:

28.25

Explanation:


Related Questions

Which detective seems to have more clues about solving the case? bolsa sancho.

Answers

Answer:

Sancho

Explanation:

Took the test

Answer:

1 True 2 False 3a parrot 4while he was hiding out 5 Sancho

Explanation:

took the test got a 100

Why does the reactivity of metals increase from right to left.

Answers

The outer electron shell of all of the noble gases (Neon, Argon, etc) have a complete octet (except helium which only has and only needs two electrons to complete its valence shell) which makes them very stable and nonreactive. The metals on the left (Na, Li, etc) all contain just one electron in their outer shell which makes them unstable and they tend to form ionic bonds.

Note that the column of elements just to the left of the noble gases (the rightmost column save one), the halogens, is also highly reactive, because the halogens all only need a single elecron to form the "stable octet" in the outer shell.

Your automatic payment option pays bills of $23. 17, $55. 67, $2,345. 15, $575. 25 and $1. 15. How much was the mean payment?.

Answers

The mean of a set of numbers is the sum divided by the number of terms.

23.17+55.67+2345.15+575.25+1.15= 3000.9

3000.9/5= 600.078

round to $600.08 because money one goes to hundredth

Select all radical expressions that are equivalent to 347.

Answers

Answer:

(3√7)4

81−−√7

Explanation:

How does the first amendment protect religious freedom for american citizens? choose exactly two answers that are correct.

Answers

Answer:

It lets people practice their faith in their own way and

It prevents the government from establishing a national religion.

Explanation:

A spherical balloon is inflating with helium at a rate of. How fast is the​ balloon's radius increasing at the instant the radius is ​ft? how fast is the surface area​ increasing?.

Answers

Using implicit differentiation, and considering that the inflation rate is of 200 cubic feet per minute and the radius is of 5 feet, it is found that:

The radius is increasing at a rate of 0.6366 feet per minute.The surface area is changing at a rate of 80 feet squared per minute.

The volume of an sphere of radius r is given by:

[tex]V = \frac{4\pi r^3}{3}[/tex]

Applying implicit differentiation, the rate of change is given by:

[tex]\frac{dV}{dt} = 4\pi r^2\frac{dr}{dt}[/tex]

For this problem:

Inflation rate of 200 cubic feet per minute, hence [tex]\frac{dV}{dt} = 200[/tex]Radius is of 5 feet, hence [tex]r = 5[/tex]

Then:

[tex]\frac{dV}{dt} = 4\pi r^2\frac{dr}{dt}[/tex]

[tex]200 = 4\pi (5)^2\frac{dr}{dt}[/tex]

[tex]\frac{dr}{dt} = \frac{200}{100\pi}[/tex]

[tex]\frac{dr}{dt} = 0.6366[/tex]

The radius is increasing at a rate of 0.6366 feet per minute.

The surface area is:

[tex]S = 4\pi r^2[/tex]

Hence, the rate of change is:

[tex]\frac{dS}{dt} = 8\pi r\frac{dr}{dt}[/tex]

Hence:

[tex]\frac{dS}{dt} = 8\pi (5)(0.6366) = 80[/tex]

The surface area is changing at a rate of 80 feet squared per minute.

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4 t-shirts and a hat costs £31. 00 2 t-shirts and a hat costs £17. 0. How much does a t-shirt cost? how much does a hat cost?.

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Answer:

T-Shirt Cost = £7

Hat Cost = £3

Explanation:

Important Information:

4 t-shirts and a hat costs £31.00

2 t-shirts and a hat costs £17.00.

Here we assume t-shirt be x and hat be y.

Explanation/Solution:

Based on the above information, the calculation is as follows:

4x + y = 31

2x + y = 17

Now subtract equation 2 from 1

2x = 14

x = 7

So y is

4(7) + y = 31

28 + y = 31

y = 3

Therefore we can conclude that The t-shirt cost £7 and Hat cost £3.

Which of the following statements best supports the one gene-one enzyme hypothesis?.

Answers

The one gene–one enzyme hypothesis is a very common hypothesis on how genes acts. The statement that best supports the one gene-one enzyme hypothesis is a mutation in a single gene can result in a defective protein.

The one gene–one enzyme hypothesis was an hypothesis that came about through George Wells Beadle in the US.

In 1941, He gave the theory which states that each gene directly makes a single enzyme, which inturn affects an individual step that are also in a metabolic pathway.

He along with other researchers experimented with mutant fruit flies.

The full question is below

Which of the following statements supports the one gene-one enzyme hypothesis?

A) A mutation in a single gene can result in a defective protein.

B) Sickle-cell anemia results in normal hemoglobin.

C) Multiple antibody genes can code for different related proteins, depending on the splicing that takes place post-transcriptionally.

D) Alkaptonuria results when individuals lack multiple enzymes involved in the catalysis of homogentisic acid.

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West corp. Issued 25-year bonds two years ago at a coupon rate of 5. 3 percent. The bonds make semiannual payments. If these bonds currently sell for 105 percent of par value, what is the ytm?.

Answers

Answer:

america

Explanation:

because im black

During his party in chapter 3 which is an example of the gossip about gatsby.

Answers

Answer: During his party in chapter 3, one of the gossip about Gatsby is that he killed a man once

Explanation:

Answer:

that he attended oxford

Explanation:

A bat emits a sound at a frequency of 3. 00 × 104 hz as it approaches a wall. The bat detects beats such that the frequency of the echo is 900 hz higher than the frequency the bat is emitting. The speed of sound in air is 340 m/s. The speed of the bat is closest to.

Answers

Taking into account the Doppler efect, the speed of the bat is closest to 5.02 [tex]\frac{m}{s}[/tex].

The Doppler effect is defined as the apparent frequency change of a wave produced by the relative movement of the source with respect to its observer. In other words, this effect is the change in the perceived frequency of any wave motion when the sender and receiver, or observer, move relative to each other.

The following expression is considered the general case of the Doppler effect:

[tex]f1=f\frac{v+-vR}{v+-vE}[/tex]

Where:

f1, f: Frequency perceived by the receiver and frequency emitted by the issuer respectively. Its unit of measurement in the International System (S.I.) is the hertz (Hz), which is the inverse unit of the second (1 Hz = 1 s⁻¹) v: Velocity of propagation of the wave in the medium. It is constant and depends on the characteristics of the medium. In this case, the speed of sound in air is considered to be 340 m/s vR, vE: Speed ​​of the receiver and the sender respectively. Its unit of measure in the S.I. is the m/s ±, ∓: We will use the + sign:

In the numerator if the receiver approaches the sender

In the denominator if the sender moves away from the receiver

We will use the sign -:

In the numerator if the receiver moves away from the emitter

In the denominator if the sender approaches the receiver

In this case, a bat emits a sound at a frequency of 3.00×10⁴ Hz= 30,000 Hz as it approaches a wall.

The bat detects beats such that the frequency of the echo is 900 hz higher than the frequency the bat is emitting.

So, you know:

f1= 30,000 Hz + 900 Hz= 30,900 Hzf= 30,000 Hzv= 340 m/svE=vR= vbatReceiver approaches the sender

Replacing in the expression is considered the general case of the Doppler effect:

[tex]30900 Hz=30000 Hz\frac{340 \frac{m}{s} +vbat}{340\frac{m}{s} -vbat}[/tex]

Solving:

[tex]\frac{30900 Hz}{30000 Hz} =\frac{340 \frac{m}{s} +vbat}{340\frac{m}{s} -vbat}[/tex]

[tex]1.03=\frac{340 \frac{m}{s} +vbat}{340\frac{m}{s} -vbat}[/tex]

1.03×( 340[tex]\frac{m}{s}[/tex] -vbat)= 340 [tex]\frac{m}{s}[/tex] + vbat

1.03×340[tex]\frac{m}{s}[/tex] - 1.03×vbat= 340 [tex]\frac{m}{s}[/tex] + vbat

350.2[tex]\frac{m}{s}[/tex] - 1.03×vbat= 340 [tex]\frac{m}{s}[/tex] + vbat

350.2[tex]\frac{m}{s}[/tex] - 340 [tex]\frac{m}{s}[/tex]= vbat + 1.03×vbat

10.2 [tex]\frac{m}{s}[/tex]= 2.03×vbat

10.2 [tex]\frac{m}{s}[/tex]÷ 2.03 = vbat

5.02 [tex]\frac{m}{s}[/tex]= vbat

In summary, the speed of the bat is closest to 5.02 [tex]\frac{m}{s}[/tex].

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If cos(x) = Three-fourths and tan(x) < 0, what is cos(2x)?.

Answers

Recall the double angle identity for cosine,

cos(2x) = 2 cos²(x) - 1

Then

cos(2x) = 2 (3/4)² - 1 = 1/8

Answer:C

Explanation:

did it on edge

Ryan invests a sum of money in a savings account with a fixed annual interest rate of 4. 31.

Answers

The amount of his initial investment is $8361

The complete question says:

Ryan invests a sum of money in a savings account with a fixed annual interest rate of 4.31% compounded 12 times per year. After 10 years, the balance reaches $12,855.94. What was the amount of the initial investment?

The initial investment is the amount required to start a particular project,  and the amount of the initial investment can be calculated by using the compound interest formula:

[tex]\mathbf{A = P(1 + \dfrac{r}{n})^{nt}}[/tex]

where;

A = amountP = Principalr = interest rate n = number of months

[tex]\mathbf{12855.94 = P(1 + \dfrac{0.0431}{12})^{12 \times 10}}[/tex]

[tex]\mathbf{12855.94 = P(1 +0.003591666667)^{120}}[/tex]

[tex]\mathbf{12855.94 = P(1.53760)}[/tex]

[tex]\mathbf{P= \dfrac{12855.94}{(1.53760)} }[/tex]

P = $8361.043

P ≅ $8361

Therefore, we can conclude that the amount of the initial investment is $8361

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A boy exerts an average force of 65n when he lifts a box 1. 2m. How much work does he do?.

Answers

Answer:

78 Nm

You can multiply force (N) and distance (m).

According to the table, what is the total distance the hiker walked? 4 km 6 km 10 km 20 km.

Answers

Answer: 20 km

Explanation:

6 + 4 + 6 + 4 = 20

if the natural market forces are left to their own devices, will tourism result in income redistribution that works in favor of the poorer segments of the population?

Answers

Answer:

No

Explanation:

No, companies will most likely reduce benefits/wages to increase profit margins and increase revenue, resulting in increased share value and happier shareholders.

A cell accumulated damage to the majority of its nucleic acids. Is in unlikely to.

Answers

Answer:

Normally if a cell has accumulated DNA damage, it is unlikely to pass the G2 check point.

Explanation:

The cell cycle is regulated at three checkpoints to ensure that the cells are ready to proceed through the process of division. At each of these checkpoints, the cell waits to receive signals on whether or not it has carried out the function that should have been completed at the previous stage. The three key check points of the cell cycle are: the cell restriction or growth check point, the DNA synthesis checkpoint and the mitosis or the metaphase checkpoint.

What is the equation of the translated function, g(x), if f(x) = x2? g(x) = (x – 4)2 6 g(x) = (x 6)2 – 4 g(x) = (x – 6)2 – 4 g(x) = (x 4)2 6.

Answers

Answer:

d

Explanation: just took the test on edge

If there is more than one speaker, how should they be all noted?.

Answers

Answer:

By their names. If the names are not known you should mark them as speaker 1, speaker 2, speaker 3, etc.

Explanation:

According to the electron-cloud model of the atom an orbital is a.

Answers

Answer:

orbital is a axis where electron revolvs

The diagram shows 3 identical circles inside a rectangle.

Answers

Answer:

Explanation:

Diagram?

Which of the expressions below is equivalent to 4x^2/12x^2-4.

Answers

Answer:

(846_++=-06456 AND _089_)(

Explanation:

A charged capacitor is connected to an ideal inductor. At time t = 0, the charge on the capacitor is equal to 6. 00 μc. At time t = 2. 00 ms the charge on the capacitor is zero for the first time. What is the amplitude of the current at that same instant?.

Answers

Answer:

6.000000üc po

Explanation:

tes times i divede mo po at i plas mo po

Quis:

*Indonesian assignment*

Find the meanings of the following words using the Indonesian Dictionary
1. Effectiveness
2. Instrument
3. Generator
4. Distribution
5. Consumption
Work in a notebook or lat


pls help me bro :-)


those who are lazy must report :) Ok ^_^​

Answers

the effect to produce something desired a implement or a tool a machine that converts mechanical energy into electricity to share something among a number of people using up a resource is known as consumption

Gianna is going to throw a ball from the top floor.

Answers

what do you mean all I see is Gianna is going to throw a ball from the top floor

Answer:

Is there options?

Explanation:

Which law would you use to simplify the expression mc006-1. Jpg? quotient of powers power of a quotient product of powers power of a product.

Answers

Answer:

Law of transparency

Explanation:

The law that will be used in simplifying the option is a3¹⁰/3⁴ is the quotient of powers. The correct option is a.

What is the quotient of powers?

According to the Quotient of Powers Property, exponents are subtracted from powers when they are divided by the same base, provided the base is not equal to 0. Using variables, nanb=n(ab) n a n b = n (a b) is defined.

It is quicker and simpler to subtract the bases than to write down the multiplications and cancel. The denominator times the derivative of the numerator minus the numerator times the derivative of the denominator, all divided by the square of the denominator, is how the Quotient Rule defines the derivative of a quotient.

[tex]\dfrac{x^a}{x^b} = x^{( a - b)}[/tex]

[tex]\dfrac{3^{10}}{3^4} = 3 ^ {( 10 - 4)}\\\\\dfrac{3^{10}}{3^4} = 3^6[/tex]

Therefore, the correct option is a, the quotient of powers.

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The question is incomplete. Your most probably complete question is given below:

The equation is:

3^10/3^4

Based on the diagram, can point d be the centroid of triangle acf? explain. Yes, point d is the point of intersection of segments drawn from all three vertices. Yes, de is three-quarters of the length of the full segment. No, de should be longer than ad. No, the ratio between ad and de is 3:1.

Answers

Answer:

A is the correct answer

Explanation:

EDGE

A centroid in a triangle, is the point where all the medians meet.

now a peculiar thing about the centroid is that, it cuts all medians in a 2:1 ratio. So, if that's true, then the median AE, is being cut in two segments AD and DE and AD : DE are on a 2 : 1 ratio.

What is centroid?

In a triangle, the centroid is the point of intersection of the three medians, which are line segments joining each vertex to the midpoint of the opposite side.

The centroid divides each median into two segments, with the distance from the centroid to the vertex being twice the distance from the centroid to the midpoint of the opposite side.

Let M be the midpoint of side AB, N be the midpoint of side AC, and P be the midpoint of side BC. Then, we have:

CD = 2DP

CE = 2DN

We are also given that DE = 15. Since D is the centroid, we have:

AD = BD = CD/3

AE = CE/3

DC + DP = PC

CE + DN = NE

AD + AE = DE

Using these relationships, we can find CD and CE:

CD = 2DP = 2(PC - DC) = 2((AD + DP) - (AD/3)) = 2(2AD/3) = 4AD/3

CE = 2DN = 2(NE - CE) = 2((AE + DN) - (AE/3)) = 2(2AE/3) = 4AE/3

To find AD and AE, we can use the fact that AD + AE = DE and AD = BD:

AD + BD = DE

AD + (2AD/3) = 15

5AD/3 = 15

AD = 9

AE = DE - AD = 15 - 9 = 6

Substituting these values into the equations for CD and CE, we get:

CD = 4AD/3 = 4(9)/3 = 12

CE = 4AE/3 = 4(6)/3 = 8

Therefore, CD = 12 and CE = 8.

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Jonathon works for a u. S. Company that doesn't produce goods domestically, but instead buys them from other countries and resells them in the united states. Jonathon's company illustrates the concept of.

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Companies are known to have different areas at which they trade. Jonathon's company illustrates the concept of importing.

Importing  by a firm simply means that a company/firm often buys goods outside the country and then resells them domestically.

Importing is don by bringing products or services into a country with the aim to sale that have been produce in another country.

Some U.S. companies are often engage in buying of products overseas and shipping them into the U.S. for sale, or as part of a product that is being assembled in the U.S.

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Where are my smart friends?? i had $3. 0. My mom gave $10. 0. My dad gave $30. 0. My aunt and uncle gave me $100. 0. I had another $7. 0. How much did i have?.

Answers

Answer:

150$ you have as you have noticed

A hoop of radius 1. 0 m is placed in the first quadrant of an xy-coordinate system with its rim touching both the x-axis and the y-axis. What are the coordinates of its center of gravity?.

Answers

Answer:

(1,1) is the answer you're looking for.

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