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3 years ago

This woman is riding a bicycle down a hill at a constant speed and in a straight line.

Chemistry

1 answer:

Ksivusya [100]3 years ago

8 0

Answer:

what is your zoom email

teĺlllll

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What is frequency?

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2 years ago

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How can a short-term environmental change, such as a drought or a flood, affect organisms?

viktelen [127]

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it can affect things by drastically chagning the way that organisms opareate such as the eco systems, the health of the land the flood or drought is on and etc.

Explanation:

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2 years ago

If you observe a liquid turning into gas at 135 degrees Celsius what are you observing?

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Evaparation :) Have a gReat Day

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4 years ago

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If the half life of a radioactive isotope is 1 day, then how much of the original isotope remains at the end of two days?

ikadub [295]

$\huge{\color{magenta}{\fcolorbox{magenta}{black}{\huge{\color{white}{\fcolorbox{aqua}{black}{✿ᴀɴsᴡᴇʀ✿}}}}}}$

25%

Explanation:

In a half life of a radioactive isotope is 1 day,it means it loses its half mass each day

We a formula for N half life

$\sf { \frac{1}{2} }^{n}$

where n is the number of days

Here the isotope is kept for 2 days

so it's left over mass will be

$\sf { (\frac{1}{2}) }^{2} \\ \\ \\ \frac{1}{2} \times \frac{1}{2} \\ \\ \sf \frac{1}{4}$

It's left over mass 1/4th of the original mass

Now, we need to find it's percentage by multiplying with 100

$\sf \frac{1}{4} \times 100 \%\\ \\ \sf \cancel\frac{100}{4} \% \\ \\ \sf 25\%$

So 25% mass will be left after 2 day of half life radioactive isotope.

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2 years ago

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What type of virus hides out inside the host cell for a time before it becomes active

Wewaii [24]

A hidden virus hides out inside the host cell for a time before it becomes active. An example of this is a cold sore on your lip.

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3 years ago