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defon
3 years ago
5

(will give brainliest to whoever is first and gives reason) A mass is spun in a circle with a frequency of 40Hz. What is the per

iod of its rotation?
Physics
1 answer:
Blizzard [7]3 years ago
4 0

Answer:

\huge\boxed{T = 0.025\ seconds}

Explanation:

<u>Given:</u>

Frequency = f = 40 Hz

<u>Required:</u>

Time period = T = ?

<u>Formula:</u>

\sf T = 1 / f

<u>Solution:</u>

T = 1 / 40

T = 0.025 seconds

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
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When the ratio of 2 variables is constant what can their relationship be described as
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We want to find how much charge is on the electrons in a nickel coin. Follow this method. A nickel coin has a mass of about 4.2
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Answer:

The number of atoms is N = 4.37*10^{22} \ atoms

Explanation:

From the question we are told that

                 The mass of coin  is m_n = 4.2g

                   Number of atom in one mole = n =6.02*10^{23} \ atoms

                   Molar mass of nickel M = 57.8g

Now the relation to obtain the number of atom in  the  nickel coin is

                        N = \frac{Mass \ of Nickel\ coin}{Molar \ mass\ of nickel }  * No\ of\atoms \ in \ \ one\  mole\ of\ nickel

                           = \frac{4.2}{57.8}* 6.02*10^{23}

                           =4.37 *10^{22} atoms

                 

     

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3 years ago
After asking a question, a scientist can form a(n) , which is an idea that may be proved or disproved by an experiment.
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Answer:

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6 0
3 years ago
Read 2 more answers
Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed o
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Answer:

\Delta \lambda=14.3\ nm

Explanation:

It is given that,

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Distance between the formed pattern and the grating, l = 2.3 m

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Let d is the slit width of the grating,

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d=\dfrac{1}{900\ cm}

d=1.11\times 10^{-5}\ m

For the first wavelength, the position of maxima is given by :

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For the other wavelength, the position of maxima is given by :

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So,

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\Delta \lambda=\dfrac{0.00298\times 1.11\times 10^{-5}}{2.3}

\Delta \lambda=1.43\times 10^{-8}\ m

or

\Delta \lambda=14.3\ nm

So, the difference between these wavelengths is 14.3 nm. Hence, this is the required solution.

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Which of the following is not a petroleum product
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