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raketka [301]
3 years ago
13

True or False: The amount of a radioactive element remaining in an object its measured. Based on the known half life of the elem

ent the amount remaining can be used to calculate how old the object is. HURRY!!!!!​
Biology
2 answers:
Oliga [24]3 years ago
7 0

Answer: FAISE

Explanation:

lions [1.4K]3 years ago
5 0

Answer:

True

Explanation:

All radioactive element have a specific property of reducing itself by half of its actual amount in a certain period of time.

Suppose, an element X has a half life of 3 years. This means that this element "X" will reduce its quantity by half after every three years.

Now , if a case in given in which it is specified that some "Y" grams of element "X" is found and the age of the substance in which this element "X" is found is to be determined.

Then by the under given relation the age of substance containing element X can be determined

N = N_0 * e^{-\alpha t}

Where "N" is the inital mass or atomic mass of X

N0 is the present mass of X

t is the age of substance

and \alpha is the decay constant i.e half life

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PLEASE BE QUICK!!!!! This scientist is using a computer model to predict the
julsineya [31]

Answer:

C

Explanation:

I would say C because it HAS to have valid data. Which is a limitation especially if you can't get that data.

5 0
2 years ago
The same agricultural practices are used in every country of the world.
makkiz [27]

Answer:

Well you already know the answer is false but I want to elaborate on this for other people who have the same / similar question.

The main source of meat, milk and eggs in most, if not all, countries are Factory-Farms, which are highly abusive, cruel industries that provide meat to around 99% of business I assume haha. A lot of businesses that claim to use "humane" practices of getting meat, dairy and eggs are not true, there is really no human way to get meat or dairy (you can humanely get eggs though factory farms don't) you can read more about this stuff on SentientMedia (graphic content warning)

Farms around the world though use different ways of harvesting (by hand, by machine etc.) planting, different kinds of crops, different ways of waters, what kind of land they plant their crops in.

Hope this helps

have a nice day((:

Explanation:

3 0
3 years ago
Read 2 more answers
How one rock can be transferred into either of the other rock type
mart [117]

Rocks can be classified in to three main groups - igneous, sedimentary and metamorphic. These three different rock types can be found in distinct areas of the UK.

Igneous rocks - these rocks are a result of volcanic activity in the past, when Britain was close to a plate boundary. Some of the igneous rocks are due to lava erupting at constructive plate boundaries. When the lava reached the surface, it cooled and solidified to form basalt rock. An example of this is the Giant's Causeway in Northern Ireland.

Other rocks are formed by hot molten magma beneath the Earth's surface cooling and solidifying as an intrusive rock under the ground, such as granite. This is later exposed as the rocks above are weathered and eroded at the Earth’s surface.

Sedimentary rocks – these are made up of small particles of sand and rock, which have been transported by the wind, rivers and ice and are usually deposited on lake or seabed. Over many millions of years, successive layers of sediments accumulate. These layers of sediments are compressed by the weight of the deposits above, into sedimentary rocks. These rocks form in layers, known as bedding planes.

When sand is compressed it forms sandstone. When mud is compressed it becomes clay. Limestone and chalk come from the remains of dead plant, animal and marine species and are rich in calcium carbonate and contain fossils. Many of these rocks were formed over 300 million years ago, in warm tropical seas during the carboniferous period. The existence of these rocks is evidence that Britain was at a different latitude compared to today. This suggests movement of continental areas of the globe, which is explained by the modern theory of plate tectonics.

Metamorphic rocks - these are rocks that have been changed in shape and form by intense heat and pressure at a plate boundary or along a fault line. These rocks start as either igneous or sedimentary rocks and are crystallised under the intense heat and pressure conditions to form rocks such as slates, schists, and marble. These rocks are very hard in nature and are often used as roof material.

short answer

The three main rock types are igneous, metamorphic and sedimentary. The three processes that change one rock to another are crystallization, metamorphism, and erosion and sedimentation. Any rock can transform into any other rock by passing through one or more of these processes. This creates the rock cycle.

3 0
2 years ago
Which chemical elements would you expect to find in abundance in a living cell?
Kazeer [188]
While living organisms contain a number of different elements, some elements are found in greater abundance in living organisms. These elements are oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus.
5 0
3 years ago
How might convection currents cause plate movement
Gnom [1K]

Answer: Mantles

Explanation: Mantles convection currents causes plate movement

7 0
3 years ago
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