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nordsb [41]
3 years ago
8

Which force requires contact

Physics
2 answers:
guapka [62]3 years ago
6 0

Tension force? There ay be more than one, but that is all I can currently think of.

jekas [21]3 years ago
5 0
Gravity?????????? or maybe like any object
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Which of the following decreases with increasing atomic number in Group 2A?
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"Ionization energy" is the one among the following choices given in the question that <span>decreases with increasing atomic number in Group 2A. The correct option among all the options that are given in the question is the third option or option "C". I hope that the answer has helped you.</span>
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3 years ago
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An object attached to one end of a spring makes 20 vibrations in 10 seconds. Its angular frequency is: 0. 79 rad/s 1. 57 rad/s 2
morpeh [17]

Angular frequency in radian per second for 20 vibrations in 10 seconds is 12.6 rad/s

<h3>What is Angular frequency?</h3>

Angular frequency is the number of vibrations in radian per second.

The total number of vibrations n is 20 and the time taken for these vibrations is 10 s

The frequency of the vibrations will be

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2 years ago
Light of wavelength 436.1 nm falls on two slits spaced 0.31 mm apart. What is the required distance from the slits to the screen
kakasveta [241]

Answer:

The correct answer is "4.26 m".

Explanation:

Given:

Wavelength,

\lambda = 436.1 \ nm

or,

  =436.1\times 10^{-9} \ m

Distance,

d = 0.31 \ mm

or,

  =0.31\times 10^{-3} \ m

Distance between the 1st and 2nd dark fringes,

(y_2-y_1) = 6\times 10^{-3} \ m

As we know,

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or,

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By substituting the values, we get

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       =\frac{0.31\times 6\times 10^3}{436.1}

       =\frac{1860}{436.1}

       =4.26 \ m

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3 years ago
A person suffering from anaemia gets tired after a short walk​
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Answer:

yes

Explanation:

you will feel weary after shorter times

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SIZIF [17.4K]
If you put a penny in each light spot the penny that the light is shining on will recive the most energy.
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