answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Y_Kistochka
2 days ago
11

An old campfire is uncovered during an archaeological dig. Its charcoal is found to contain less than 1/1000 the normal amount o

f ^{14}\text{C} ​14 ​​ C. Estimate the minimum age of the charcoal, noting that
Mathematics
1 answer:
PIT_PIT [9.1K]2 days ago
5 0

During an archaeological excavation, an ancient campfire is uncovered. The charcoal is determined to have significantly less than 1/1000 of the standard amount of ^{14}\text{C} ​. Calculate the minimal age of the charcoal, taking into account that 2^{10} = 1024

Response:

57300 years

Step-by-step breakdown:

Using the relationship of half-life time against fraction, which can be expressed as:

\dfrac{N}{N_o} = (\dfrac{1}{2})^{\frac{t}{t_{1/2}}

In this context,

N indicates the current atom

represents the initial atomN_o

t signifies the time

denotes the half-lifet_{1/2}

Since the charcoal was found to contain less than 1/1000 of the typical amount of ^{14}\text{C} ​.

Thus;

\dfrac{N}{N_o} = \dfrac{1}{1000}

However; the objective is to estimate the minimum age of the charcoal while noting  2^{10} = 1024

this means 2^{10} = 1024, then:

\dfrac{1}{1000}> \dfrac{1}{1024}

\dfrac{1}{1000}> \dfrac{1}{2^{10}}

\dfrac{1}{1000}> (\dfrac{1}{2})^{10}

If

\dfrac{N}{N_o} = \dfrac{1}{1000}

Then

\dfrac{N}{N_o} > (\dfrac{1}{2})^{10}

Consequently, it can be estimated that the minimum time elapsed is 10 half-lives.

For ^{14}\text{C}, the standard half-life time is 5730 years

Thus, the estimation of the minimum age of the charcoal is  5730 years × 10

= 57300 years

You might be interested in
A comic book store is having a sale you can buy 20 comic books for $35. what is the cost of 8 comic books during the sale
Leona [9271]

Response:

$14

Step-by-step explanation:

35 divided by 20 equals 1.75

8 multiplied by 1.75 results in 14

4 0
2 days ago
Read 2 more answers
an auto transport truck holds 12 cars. A car dealer plans to bring in 1006 new cars in June and July. if an auto transport truck
tester [8842]

Divide 1006 by 12

1006 / 12 = 83.833

This results in 83 complete trucks

83 * 12 = 996

Hence, 10 cars will be in the final truck

5 0
17 days ago
Read 2 more answers
What is the midpoint of a line segment with the endpoints (-6, -3) and (9, -7)?
PIT_PIT [9121]
The midpoint of the line segment with endpoints (-6, -3) and (9, -7) is (1.5,-5).
5 0
13 days ago
Un globo vuela entre dos ciudades A y B, que distan entre sí 1.500 m. Los tripulantes del globo ven la ciudad A con un ángulo de
Inessa [9006]

Respuesta:

La altitud del globo por encima del nivel del suelo es de 449,6 metros.

Explicación paso a paso:

El enunciado no está completo. El texto completo es: "Un globo se desplaza entre las ciudades A y B, que se encuentran a 1.500 m de distancia. Los ocupantes del globo observan la ciudad A con un ángulo de depresión de 27°, mientras que, para la ciudad B, el ángulo es de 36°. ¿Cuál es la altura aproximada del globo con respecto al suelo?"

El diagrama que ilustra esta situación está en el archivo adjunto. Para calcular la altura del globo, se pueden emplear las funciones trigonométricas, siendo recomendable hacer uso de la función tangente para los ángulos de depresión mencionados:

Ciudad A

\tan 27^{\circ} = \frac{h}{1500\,m-x}

0,510 = \frac{h}{1500\,m-x}

Ciudad B

\tan 36^{\circ} = \frac{h}{x}

0,727 = \frac{h}{x}

Donde h y x representan la altura desde el suelo y la distancia horizontal desde la ciudad A.

Luego, se igualan las alturas en ambas ecuaciones para calcular la distancia horizontal del globo en relación a la ciudad A:

0,727\cdot x = 0,510\cdot (1500\,m-x)

1,237\cdot x = 765\,m

x = 618,432\,m

Por último, la altura del globo sobre el suelo se calcula como:

h = 0,727\cdot x

h = 0,727\cdot (618,432\,m)

h = 449,600\,m

La altura del globo respecto al nivel del suelo es 449,6 metros.

6 0
1 month ago
Six sophomores and 14 freshmen are competing for two alternate positions on the debate team. Which expression represents the pro
Svet_ta [9518]
<span>The likelihood of both selected students being sophomores is 6/20, which simplifies to 3/10.
The expression for the probability that both chosen students are sophomores is (6c1) (5c1) /(20c2) 

</span>
5 0
26 days ago
Read 2 more answers
Other questions:
  • The linear equation 3x – 11y = 10 has
    11·1 answer
  • PLEASE HELP!! WILL MARK BRAINLIEST AND THANK YOU!!!
    14·2 answers
  • A sample of 75 information systems managers had an average hourly income of $40.75 with a standard deviation of $7.00. The 95% c
    14·1 answer
  • The function c(x) = 0.5x+70 represents the cost c (in dollars) of renting a truck from a moving company, where x is the number o
    8·2 answers
  • Helena needs 3.5 cups of flour per loaf of bread and 2.5 cups of flour per batch of muffins. She also needs 0.75 cup of sugar pe
    8·2 answers
  • The weight of a population of yeast is given by a differentiable function y, where y(t) is measured in grams and t is measured i
    6·1 answer
  • Kelly bought Mason’s home for $255,500. Mason had prepaid the annual property taxes of $2,650. If closing costs are calculated o
    8·1 answer
  • Select the correct answer. Twenty students in Class A and 20 students in Class B were asked how many hours they took to prepare
    11·1 answer
  • Tiffany sells two kinds of homemade tomato sauce. A quart of her Tuscan sauce requires 6 tomatoes and 1 cup of oil. A quart of h
    14·2 answers
  • I thought of number J, and then subtracted half of it from 34.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!