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nadya68 [22]
3 years ago
9

Answer the question below:

Physics
2 answers:
OLga [1]3 years ago
8 0

Answer:

Its D

Explanation:

Bezzdna [24]3 years ago
6 0

Answer:

D) the decay rates of radioactive uranium and lead

Explanation:

As we know that when she found the substance it must have some fixed ratio of radioactive uranium and Lead in that substance.

Here since Uranium is radioactive substance so it will continuously convert into Lead and this ratio will change with time

So here we can say that the ratio of radioactive uranium and lead will depend on its decay rate

now to find the age of the substance we can find the present ratio of lead and uranium in that substance and then compare it with freshly prepared substance.

so by the formula

we can find the age of the sample

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We know that work= force x displacement along the direction of force
here force shoukd be equal to its self-weight.
thus, work= self-weight x displacement.
=mass x acceleration due to gravity x displacement.
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4 years ago
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How are the interference patterns for light through a double slit and light through a single slit similar yet different
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Answer: In double slit case, you need to understand superposition on waves emerging from dirrerent slit.

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3 years ago
20 kg rodsis on the edge of a 80 m high de What is the rodes gracional potencial energy?
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Answer:

Gpe = 15680 Joules

Explanation:

Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.

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G.P.E = mgh

Where;

G.P.E represents potential energy measured in Joules.

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h represents the height measured in meters.

Given the following data;

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3 years ago
What is speed in science ???
bazaltina [42]

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Distance per unit time

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Speed is the rate at which someone or something is able to move or operate.

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3 years ago
How many protons, electrons and nurturing does krypton have NEED HELP ASAP THANK YOU
Assoli18 [71]

Answer:

Krypton – Mass Number – Neutron Number – Kr 2020-11-21 by Nick Connor Krypton is a chemical element with atomic number 36 which means there are 36 protons and 36 electrons in the atomic structure. The chemical symbol for Krypton is Kr.

Atomic Number: 36

Element: Krypton

Element Category: Noble Gas

Symbol: Kr

Explanation:

8 0
2 years ago
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