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3 years ago

7

Write a letter to your friend telling him how you are keeping active with your studies at home due to the Coronavirus Pandemic o

utbreak

1 answer:

tangare [24]3 years ago

7 0

Answer:

HERPES CURE OR ANY DISEASES CONTACT_________________________ ROBINSONBUCLER ((G MAIL.)) COM ……………

Explanation:

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Which clue indicates that a speciation has occurred between two populations?

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I believe the answer is C

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3 years ago

An 80.0 kg hiker walks a distance of 400.0 m along a road that slopes 5.0 degrees upward, and then stops. What is the hiker's fi

lana66690 [7]

The height difference is found by
$\delta H=400sin(5 \°)=34.86m$
Then the change in potential energy is
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3 years ago

What can we say about microwaves<br> waves on the electromagnetic spectrum?

Elena L [17]

Answer:

Microwaves fall in the range of the EM spectrum between radio and infrared light.

Explanation:

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2 years ago

The mass of a radioactive substance follows a continuous exponential decay model, with a decay rate parameter of 1% per day. A s

Bumek [7]

Answer:

2,38kg

Explanation:

Mass in function of time can be found by the formula: $m_{(t)} =m_{0} e^{-kt}$ , where $m_{0}$ is the initial mass, t is the time and k is a constant.

Given that a sample decay 1% per day, that means that after first day you have 99% of mass.

$m_{(1)} =m_{0} e^{-k(1)}$ , but $m_{(1)}=\frac{99m_{0} }{100}$ , so we have $\frac{99m_{0} }{100}=m_{0}e^{-k}$ , then $k=-ln(\frac{99}{100})=0.01$

Now using k found we must to find $m_{(5)}$ .

$m_{(5)}=m_{0}e^{-(0.01)5}=2.5kge^{-0.05} =2.5x0.951=2.38kg$

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3 years ago

A toroid has a square cross section with the length of an edge equal to the radius of the inner surface. The ratio of the magnit

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Answer:

2

Explanation:

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3 years ago

Read 2 more answers