1answer.
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
artcher [175]
3 years ago
13

What island country is off the east coast of Africa?

Geography
1 answer:
Sergio [31]3 years ago
4 0

The country is Madagascar

You might be interested in
Analysis of a rock sample that it contains 6.25% of its original uranium-235. How old is the rock? How do you know?
Andrews [41]

Answer:

The age of the rock = 2800.6 million years = 2.8 billion years.

A simple method of analysis similar to Carbon dating is used to obtain the required age of the rock. Radioactive substances decay according to first order reaction kinetics. So, plugging all the required parameters into the general equation for amount of substance left in a first order decay gives us the age of the rock.

Explanation:

Half life of Uranium-235 = 700 million years (from literature)

The decay of radioactive substances follow first order reaction kinetics.

The general equation is given as

A(t) = A₀ e⁻ᵏᵗ

A(t) = Amount of radioactive substance left after a particular time = 6.25%

A₀ = initial amount of radioactive substance = 100%

t = time that has passed since the beginning = age of the rock = ?

k = decay constant

The decay constant is related to the half life (T) through the relation,

k = (In 2)/T

k = (0.693/700) = 0.00099 /million years

A(t) = A₀ e⁻ᵏᵗ

6.25 = 100 e⁻ᵏᵗ

0.0625 = e⁻ᵏᵗ

In e⁻ᵏᵗ = In 0.0625 = -2.7726

-kt = - 2.7726

t = (2.7726/0.00099) = 2800.6 million years

t = 2.8 billion years.

Hope this Helps!!!

7 0
3 years ago
Explain the process of urbanization in ethiopia​
Montano1993 [528]

Answer:

Explanation:

The process of urbanization in ethiopia is a process of decentralizing development in the region of Ethiopia. The process is often described as the process of developing a new city in Ethiopia, but it is still the prime destination for many migrants.

See also: Ethiopia, urbanization

7 0
2 years ago
How much of the Amazon Rainforest is in Brazil? <br><br> A.) 60%<br> B.) 70%<br> C.) 75%<br> D.) 90%
brilliants [131]

Answer:

A

Explanation:

The majority of the forest is contained within Brazil, with 60% of the rainforest,  followed by Peru with 13%, Colombia with 10%.

7 0
3 years ago
Read 2 more answers
The _______ is the innermost layer of the Sun's atmosphere.
Greeley [361]
The innermost layer or the lower most layer of the Sun's atmosphere is called the photosphere. It is the visible surface of the sun that we are most familiar with. The sun is a ball of gas; however, the solid shape we see is actually just a layer which is about 100 km thick. The correct answer to this question is letter "C. Photosphere". 
4 0
3 years ago
A small area of sea partially enclosed by dry land.
s344n2d4d5 [400]

Answer:

I think the answer is beach

8 0
3 years ago
Read 2 more answers
Other questions:
  • AP HUMAN GEOGRAPHY
    11·2 answers
  • Archaeologists refer to the period of time before people invented writing systems as?
    15·1 answer
  • Which of the following cities is the leading industrial producer and financial center in South America? Answer La Paz, Bolivia B
    6·2 answers
  • What’s the approximate population of North and South America combined
    9·2 answers
  • Question 7
    13·1 answer
  • Desde o Século XV, a Europa se caracterizou pela forte emigração, povoando inúmeras áreas em todos os continentes. Nos últimos t
    7·2 answers
  • 3. Prince George, BC to Swift Current, Sask
    7·1 answer
  • From which line of longitude the South Africa calculate its time​
    11·1 answer
  • Write one paragraph (5-8 sentences) on your thoughts about whether it is better to consume local products or to consume global p
    12·2 answers
  • Which factor has the most influence on latin america climates
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!