How do you determine the half-life of a radioactive parent isotope based on a decay curve?

Answers

Answer 1
Answer:
If you have the curve on a graph, then it should be easy.

-- Pick any level on the y-axis, like a level that's marked with a
       horizontal grid line.
   Find the point on the graph where it crosses that level.
   From that point, look down on the x-axis and find the time at that point.

-- On the y-axis, find the level that's 1/2 of the first one.
   Find the point on the graph where it crosses this new level.
   From this new point, look down on the x-axis and find the time.
  
-- The time interval between the two points is the half-life of that isotope.


Related Questions

What was the nation of Yugoslavia first called?
A weak central government in Nigeria has trouble coping with _____.
What is the domain of the given function?{(3, –2), (6, 1), (–1, 4), (5, 9), (–4, 0)}{x | x = –4, –1, 3, 5, 6}{y | y = –2, 0, 1, 4, 9}{x | x = –4, –2, –1, 0, 1, 3, 4, 5, 6, 9}{y | y = –4, –2, –1, 0, 1, 3, 4, 5, 6, 9}
Compared to a light-colored rock with a smoothsurface, a dark-colored rock with a rough surface will (1) both absorb and reflect less insolation (2) both absorb and reflect more insolation (3) absorb less insolation and reflect more insolation (4) absorb more insolation and reflect less insolation
salah satu keuntungan besar yang menjadi modal utama pergerakan nasional sebagai akibat adanya politik etis adalah

Why is the music of the united states considered distinct and unique? because the us is a mix of many cultures and languages because the us has not had centuries for a musical tradition to evolve because the us embraced much of the music of the native americans and the african slaves because the us continues to evolve musically

Answers

The correct answer is - because the US is a mix of many cultures and languages.

Because the United States are a country where there's people from all over the world, which brought hundreds different cultures and languages with them, the music has evolved in a specific unique manner. In general, we can see in the United States's popular music the elements of the Celtic music which is mostly into the pop music, the country music that evolved as separate traditional music from the people living and working on farms, the Latino elements from the big Latino population, as well as the music types originated from the black population like the blues and jazz that were inspired by the hard life and slavery.

Answer:

because the US has not had centuries for a musical tradition to evolve

Explanation:

How are igneous rocks formed?

Answers

Igneous rocks form when a volcano erupts and the hot lava cools. Igneous rocks have many different textures. The texture is determined by how quickly the rocks cool. Those that form on or near the surface tend to cool rapidly, giving the rock a fine grain, such as basalt, the most common rock on the ocean floor. Those igneous rocks that form deep below the surface tend to cool more slowly and, as a result, tend to be tough with a coarse grain, such as granite.

They are formed through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive (volcanic) rocks.

Which of the following best contrasts the role that geography played in the development of civilizations in Mesopotamia and in Mesoamerica? A. People in Mesopotamia were able to farm along two rivers and use fertile soil; people in Mesoamerica had to rely more on rainwater for agriculture.B. People in Mesopotamia had to rely more on rainwater for agriculture; people in Mesoamerica were able to farm along two rivers and use fertile soil.
C. People in Mesopotamia had to rely on hunting and gathering because of the mountainous terrain; people in Mesoamerica were able to farm along two rivers and use fertile soil.
D. People in Mesopotamia had to rely more on rainwater for agriculture; people in Mesoamerica had to rely on hunting and gathering because of the mountainous terrain.

Answers

"People in Mesopotamia were able to farm along two rivers and use fertile soil; people in Mesoamerica had to rely more on rainwater for agriculture" is the one that best contrasts the role that geography played in the development of civilizations in Mesopotamia and in Mesoamerica. The correct option is option "A". 

The correct answer is - A. People in Mesopotamia were able to farm along two rivers and use fertile soil; People in Mesoamerica had to rely more on rainwater for agriculture.

Mesopotamia was founded along two big rivers, the Tigris River and the Euphrates River. Both of these rivers came down from the highlands north of Mesopotamia. These two rivers are in close proximity so when they were flooding they were creating a large space of very fertile soil by their annual depositions. This allowed the people from Mesopotamia to have sustainable agriculture and also gave them enough space and time so that they can develop as civilization.

The people from Mesoamerica didn't had the same luck, instead they were heavily reliant on the climate and how much and in which part of the year there will be rain. This caused them major problems because very often it happened that there's long droughts and their crops destroyed, which meant starvation. Because of this lots of cities and states had fallen and disappeared from the face of the Earth.

At divergent plate boundaries in the ocean, magma rises and melts because ofA. higher temperatures at the surface.
B. a decrease in pressure.
C. intrusive plutons at the boundary.
D. increased silica content of magma.

Answers

The correct answer for the question that is being presented above is this one: "B. a decrease in pressure." At divergent plate boundaries in the ocean, magma rises and melts because of a decrease in pressure. The magma rises and melts as the divergent plate boundaries in the ocean decreased in pressure.

If you see a very tall, rock feature that looks like a jagged, rectangular block sticking out of the ground, you're probably observing a _____.-lava dome
-geyser
-volcanic neck
-flood basalt plateau

Answers

If you see a very tall, rock feature that looks like a jagged, rectangular block sticking out of the ground, you're probably observing a volcanic neck. Also known as a lava neck or volcanic plug, a volcanic neck is formed when magma solidifies within a vent of an active volcano. This can harness great amounts of pressures which could lead to an explosive eruption.

What is the average orbital speed of mars ?

Answers

Answer:

24.07 orbital parameters

Explanation:

brainliest plzzzz