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3 years ago

ILL GIVE BRAINLIEST.

Physics

1 answer:

notka56 [123]3 years ago

8 0

55 m/s is the answer if nothing has changed it will come back the same speed it was thrown up. Have an amazing day!

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What is lignin and cellulose?

mariarad [96]

Hope this helps And here is the answer for you

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4 years ago

In proton beam therapy, a beam of high-energy protons is used to kill cancerous cells in a tumor. In one system, the beam, which

Thepotemich [5.8K]

The number of protons that strike the tumor each second is $1.75 \times 10^8$ protons.

Given the following data:

Energy of proton = $2.8 \times 10^{-11}$ Joules.

Current = 84 nA to A = $84 \times 10^{-9}$ Ampere.

Energy of total dose = $3.4 \times 10^{-3}$ Joules.

Scientific data:

Charge of proton = $1.602 \times 10^{-19}$ C.

To determine the number of protons that strike the tumor each second:

<h3>How to determine the number of protons.</h3>

Mathematically, the quantity of charge per unit time is given by this formula:

$Q =It=Ne\\\\N = \frac{Q}{e}$

Where:

N is the number of protons.

t is the time measured in seconds.

I is the current.

e is the charge of protons.

Substituting the parameters into the formula, we have;

$N=\frac{2.8 \times 10^{-11} }{1.602 \times 10^{-19}} \\\\N = 1.75 \times 10^{8}$ protons.

Read more on charges here: brainly.com/question/14372859

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3 years ago

Evaporation only occurs at the surface of a liquid

Veseljchak [2.6K]

yes

evaporation starts on the surface

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4 years ago

Which statement is true?

Stella [2.4K]

A ) Speed is a scalar quantity and velocity is a vector quantity.

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3 years ago

What would happen to global warming if there were fewer greenhouse gasses in the atmosphere

Bas_tet [7]

Greenhouse gases are considered as one of the main reasons behind global warming on our planet earth. The poisonous gases emitted by the industries, vehicles and other medium are increasing the rate of global warming. When these type of emissions are controlled, then the global warming is bound to reduce. It has been scientifically proved that on days when vehicles are less on the roads or on days when industries are closed, the greenhouse gases are emitted less and this results in lesser amount of pollution. This in turn definitely helps to reduce global warming.

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3 years ago