A collector of rare items is negotiating with a museum. He wants to sell a spear he claims to have been
used to kill a mammoth over 11,000 years ago. A spear that size would have started with around 4g of
Carbon-14, and the museum tests show it now contains around 2g. How many half-lives have passed since the spear was carved?

Answers

Answer 1

Answer:

I'm not sure if you maybe forgot to add in some information but I can give you the equation you will need to solve this..! (just without the bit of infomration you might need)

[tex]2=4(\frac{1}{2})^{\frac{1100}{t}}[/tex]

In this case you'll be solving for t and I can help you with your first step, you'll divide 2 by 4, getting you to:

[tex]\frac{1}{2} =\frac{1}{2}^{\frac{1100}{t}[/tex]

Answer 2

Answer:

1 as 2g is half of 4g

Explanation: that means that the spear is closer to 6k years old


Related Questions

The horizontal acceleration of a projectile __
as its position changes.
A. Increases
B. Decreases
C. Is constant
D. Is zero

Answers

Answer: C, constant, you’re welcome

How much time does it take to change the momentum by 350 Ns with a 15 N force?

Answers

Do 350/50 for the answer


The Sankey diagram below shows the energy transfers in a computer. 100 J of energy are input. It is carried to the computer by
What one word completes the sentence?

Answers

A sentence contains a full stop at the end

what is the magnitude of the eletrostatic force on an electron by another electron when they are 0.10 meter apart?

Answers

Answer:

[tex]F=2.30\times 10^{-26}\ N[/tex]

Explanation:

The distance between two electrons, d = 0.10 m

We need to find the magnitude of the electrostatic force on an electron by another electron.

The electrostatic force between two charges is given by :

[tex]F=k\dfrac{q_1q_2}{d^2}[/tex]

Substitute all the values,

[tex]F=\dfrac{9\times 10^9\times (1.6\times 10^{-19})^2}{(0.1)^2}\\\\F=2.30\times 10^{-26}\ N[/tex]

So, the magnitude of the electrostatic force between two electrons is [tex]2.30\times 10^{-26}\ N[/tex].

It is a force imposed by one charge on another as a result of the field. The magnitude of the electrostatic force will be 2.30×10⁻²⁶N.

What is the electrostatic force?

It is a force imposed by one charge on another as a result of the field. The electrostatic force produced by one line charge on another line charge is inverse of the square of the radius.

The electrostatic force is determined by the charge potency of each charge as well as the separation distance between them.

The given data in the problem is;

q=q₁=q₂ is the electric charge = 1.6×10⁻¹⁹C

r is the distance between the two charge=0.10 m

The formula for the electrostatic force is given by;

[tex]\rm F=\frac{ Kq_1q_2}{r^2} \\\\ \rm F=\frac{ 9\times 10^9 \times(1.6\times 10^{-19})^2}{(0.1)^2}\\\\ \rm F =2.30 \times 10^{-26} \ N[/tex]

Hence the magnitude of the electrostatic force will be 2.30×10⁻²⁶N.

To learn more about the electrostatic force refer to the link;

https://brainly.com/question/9774180

What is the smallest, most basic level of organization in an animal or
plant?

Answers

Answer:

hhmmmmmhmmmm hmhmmmm hmmm yeah i got nothing

Explanation:

help fast plsss ! which statement is true for nuclear reactions but not for chemical reactions?

Answers

Answer:

B

Explanation: a chemical reaction is only the rearrangement of electrons where a nuclear reaction actually changes the elements and thus the nuclei

Answer:

The nuclei of the atoms are changed by the reaction.

Explanation:

Just took the test.

HELP I GIVE BRAINLIST

which of the following is a abiotic factor ?

A ) pH level of water
B ) Coral Reef
C ) fish
D ) seaweed

Answers

Answer:

it's A

Explanation:

it's A because the ph level of water is just the level of the water if it's acidic or just a base


2. Which of the following wavelength properties would require a stopwatch to measure?
A wavelength
B amplitud
C frequency
D height

Answers

Answer:

A. wavelength

Explanation:

The others are about sound and how high it is. That has nothing to do with time.

Question : Which of the following wavelength properties would require a stopwatch to measure ?

A - wavelength

B- amplitude

C- frequency

D- height

MY ANSWER : C- FREQUENCY

MWAHHH LOVE - HAVE A RESTFUL NIGHT !

When the net force on an object is zero, the object's motion will:

Answers

Explanation:

Newton's first law of motion that every object will continue in its state of rest or uniform motion in a straight line unless a resultant force acts on it.

this law means that if the resultant force is zero,

so the object will do either of those things.

hope it helps, if not, please report it so that someone else gets to try .

please vote if found helpful

Can someone help me answer this pls I’ll give brainliest

Answers

Answer: I think the answer is Non-foliated if it is wrong i am so sorry

don't forget to drop a heart.

Explanation:

HELP PLEASE!!!

Gravity helps us watch television, talk on the phone, and use the Intemet.
Explain whether this statement is true or false.
Support your answer with evidence from the text.

Answers

Answer:

Technically yes, it does help those objects not to float away, but that is false. gravity is not the factor that lets us watch tv, talk on the phone etc.

Gravity helps us watch television, talk on the phone, and use the Internet. This is true statement.

What is the process of  satellite orbiting?

The goal of satellites is to achieve balance. They rotate around the globe quickly enough to avoid being entirely drawn down into the planet's center of gravity, yet slowly enough to avoid drifting out into space.

When a satellite is travelling at the right speed, the earth's gravitational attraction is just strong enough to keep it in place. A satellite must move quicker to maintain orbit the nearer it is to the earth's surface. Additionally, satellites' orbits are circular or elliptical due to the continual pull of the curved surface of the planet.

Therefore, gravity plays a crucial role in our daily lives, whether it's keeping us anchored to the planet's surface or keeping the satellites we use to communicate and learn more about our environment in orbit.

Learn more about satellite here:

https://brainly.com/question/9266911

#SPJ2

the law of inertia states that an object in motion will stay in motion, and an object at rest will stay in rest unless acted upon by an unbalanced force which law of motion is this describing

Answers

Answer:

newton's first law of motion

Explanation:

this is because newton's first law of motion states that every object will continue in its state of rest or uniform motion in a straight line unless a resultant force acts on it so...

isn't this similar to the law of inertia?

yes it is

hope this helps

A. Ears
B. Air
C. Water
D. Rocks

Answers

Answer:

A Ears

Explanation:

hgvjjghingyjbvh

If 10 crests and 10 troughs pass through a point in 5 seconds. Calculate its time period and frequency?

Answers

Answer:

frequency = 5 /s

period = 0.5 s/

Explanation:

number of revolution = 10+10/2 = 20/2 = 10

frequency = n/t = 10/5 = 5 /s

period = t/n = 5/10 = 0.5s

How many seasons are there in a year

Answers

Answer:

There are 4

Explanation:

Four seasons
Summer winter autumn and spring

what improvement that can be made in a siphon so that the rate of liquid transfer is higher?​

Answers

Answer:

You could raise the height of the top of the siphon or make the size of the hose being used bigger.

Explanation:

I hope this helps.

If a light ray from a candle strikes a mirror at an angle of 40 degrees with the normal, at what angle will the ray reflect?

A. 20 degrees
B. 25 degrees
C. 40 degrees
D. 60 degrees
E. 80 degrees

Answers

B. 25 Degrees

kdjdjdxfxjdgkshd
shgdjsgsjshkshdjdg
isgdjdgdksgkdhskdg i needed more characters

Answer: 20

Explanation:

The speed of a wave is 70 m/s. If the wavelength of the wave is 0.4
meters, what is the frequency of the wave?

Answers

Answer:

dont know still in 7gd

Explanation:

Answer:

Leo no i dont ansver

Explanation:

ezgisu0613062011 http ()/_

What is the difference between a pure
substance, solution, and mixture?

Answers

 A pure substance cannot physically be separated, and is made out of one atom (or molecule). Unlike a mixture, however, which are made out of two or more atoms or molecules. A solution in itself is the example of a mixture. (The composition of a pure substance being fixed, and a mixture's being varying depending on which.) And a solution branching off from a mixture into being either homogeneous mixtures or heterogeneous mixtures.

srry it kinda turned into a paragraph lol, feel free to add or take away anything :)

A 2.75 kg block is pulled across a flat, frictionless floor with a 5.11 N force directed 53.8° above horizontal. What is the total force acting on the block? (total force = N)

Answers

Answer:

F = 3.01 N

Explanation:

Given that,

Mass of a block, m = 2.75 kg

Force applied to the block, F = 5.11 N

It is directed 53.8° above horizontal.

We need to find the total force acting on the block. The force acting on it is given by :

[tex]F=F\cos\theta\\\\F=5.11\times \cos53.8\\F=3.01\ N[/tex]

So, 3.01 N of force is acting on the block.

3.01 works as the right answer

Calculate acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds.

Answers

Answer:

acceleration = 0.013 m/s²

Explanation:

formula for acceleration is

a = (v-u) / t

a= (0.7-0.3) / 30

= 0.013

The acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²

Acceleration is defined as the change in velocity of a body with respect to time. Mathematically:

[tex]a=\frac{v-u}{t}[/tex]

v is the final speed = 0.7m/s

u is the initial speed = 0.3m/s

t is the time taken = 30seconds

Substitute the given values into the formula:

[tex]a=\frac{0.7-0.3}{30}\\a=\frac{0.4}{30}\\a = 0.0133m/s^2[/tex]

Hence the acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²

Learn more here: https://brainly.com/question/20982904

Explain the challenges in developing an accurate rating system for earthquakes. What kinds of variables are there?

Answers

Answer:

In turn, the main factors affecting earthquake shaking intensity are earthquake depth, proximity to the fault, the underlying soil, and building characteristics—particularly height. Let's take a look at the latter two (soil and buildings) and how they interact.

The challenge in developing an accurate rating system for earthquakes is due to complicated relationship between variables such as magnitude and intensity of earthquake.

Earthquakes are associated with magnitude and intensity.

The challenge in developing an accurate rating system for earthquake is due to complicated relationship and dependency between the magnitude and intensity of the earthquake.

Intensity of earthquake is the observed effects resulting from the earthquake such as; shaking of buildings, people etc. This intensity of the earthquake depends on the location of the observer with respect to earthquake epicenter.The magnitude of the earthquake relates to the amount of energy released during the earthquake.

Thus, the challenge in developing an accurate rating system for earthquakes is due to complicated relationship between variables such as magnitude and intensity of earthquake.

Learn more here:https://brainly.com/question/15619895

A- Lunar Eclipse

B- Neap Tide

C- Spring tide

D-Solar tide

Answers

A) Lunar eclipse babe

D Solar tide

Explanation:

Because d is closer to the sun

what is the economic system in the united states?
A. Capitalist economy
B. Stock Market economy
C. Global economy
D. Communist economy

Answers

Answer:

A. Capitalist economy

Explanation:

The United States is a capitalist economy. Hope this helps, thank you !!

What is the weight of a dog that has a mass of 47.0 kg?​

Answers

Answer:

while we often confuse mass with weight, 47 kg is 47 x 9.8 = 460.6 Newtons. 9.8 is acceleration of gravity in m/sec/sec

The electric field of a positively charged ball A contains a negatively charged small dust​

Answers

Answer:

Here is your ans pic

hope its helps you

Explanation:

pls make brainliest

tq

ILL GIVE BRAINLYyYYYyYYyyyyy
The best thermal insulators _____________________.


have free electrons.


are metals.


conduct heat well.


are gases.

Answers

Answer:

The best thermal insulators have free electrons

A person drops a ball off the top of a 10 story building. What statement below best describes the movement of the ball?

Answers

Most helpful Answer~

There are no options~

Anyway If the ball is of bad quality it will get deflated/ or strike out.

' The must reasonable thing that could happen is that the ball will bounce'

*Smile* :)  

What are the dangers of a thunderstorm and how do you stay safe during the thunderstorm?

Answers

Answer:

you get struck by lightning

Explanation:

hide in ur house

Answer: The dangers of thunderstorms is lightning, flash floods, and thunder.

To stay safe stay inside, do not take a shower/bath, stay away from waterfalls, and try not to touch anything metal.


40 Newtons
30 Newtons
20 Newtons
10 Newtons
Which statement is TRUE about the picture above?
A
The spheres have only weight but no mass.
B
The 40 Newton sphere has the greatest gravitational force.
The smaller the weight, the greater the gravitational force
D
Although the weights of the spheres are different, the gravitational forces
are the same
Sign out
04:04

Answers

Although the weight of the spears a different the gravitational forces are the same
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