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2 years ago

What is magnetic resonance ???

Physics

2 answers:

Lemur [1.5K]2 years ago

7 0

Answer:

feu vkdu qtg

gi.rls joi.n for study here i am also a girl here we study girl is allowed here boy are not allowed here we only study so co.me for study in me.et.ing gir.ls co.me for study here its boys disturb me.eting so boys not allowed girls is allowed i am also a girl its a safe me.et.ing

MrRa [10]2 years ago

4 0

Answer:

haajajjsjajajajaaaiiajaka

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Suppose that a planet were discovered between the sun and Mercury, with a circular orbit of radius equal to 2/3 of the average o

Musya8 [376]

Explanation:

It is given that,

A planet were discovered between the sun and Mercury, with a circular orbit of radius equal to 2/3 of the average orbit radius of Mercury.

Mass of the Sun, $M=1.99\times 10^{30}\ kg$

Radius of Mercury's orbit, $r=5.79\times 10^{10}\ m$

Radius of discovered planet, $R=\dfrac{2}{3}r$

$R=\dfrac{2}{3}\times 5.79\times 10^{10}\ m=3.86\times 10^{10}\ m$

Let T is the orbital period of such a planet. Using Kepler's third law of planetary motion as :

$T^2\propto R^3$

$T^2=\dfrac{4\pi^2R^3}{GM}$

$T^2=\dfrac{4\pi^2\times (3.86\times 10^{10})^3}{6.67\times 10^{-11}\times 1.99\times 10^{30}}$

$T=\sqrt{1.71\times 10^{13}}$

T = 4135214.625 s

T = 47.86 days

So, the orbital period of such a planet is 47.86 days. Hence, this is the required solution.

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2 years ago

Calculate the pressure on the ground from an 80 kg woman leaning on the back of one of her shoes with a 1cm diameter heel, and c

rodikova [14]

Answer:

Pressure of woman will be $99.87\times 10^5N/m^2$

Pressure of the elephant will be $1716560.50N/m^2$

Explanation:

We have given that mass of the woman m = 80 kg

Acceleration due to gravity $g=9.8m/sec^2$

Diameter of shoes = 1 cm =0.01 m

So radius $r=\frac{d}{2}=\frac{0.01}{2}=0.005m$

So area $A=\pi r^2=3.14\times 0.005^2=7.85\times 10^{-5}m^2$

We know that force is given F = mg

So $F=80\times 9.8=784N$

Now we know that pressure is given by $P=\frac{F}{A}=\frac{784}{7.85\times 10^{-5}}=99.87\times 10^5N/m^2$

Now mass of elephant m = 5500 kg

So force of elephant = 5500×9.8 = 53900 N

Diameter = 20 cm

So radius r = 10 cm

So area will be $A=3.14\times 0.1^2=0.0314m^2$

So pressure will be $P=\frac{53900}{0.0314}=1716560.50N/m^2$

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2 years ago

If you bring a charged object near an electrically neutral surface without allowing the object to touch the surface, the charges

Naddika [18.5K]

Heat or gasses you should insert a picture

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2 years ago

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A light-year is a measure of the astronomical distance that light traverses in a vacuum in 1 year. (a) how many kilometers does

const2013 [10]

<span>A light-year is the total distance that light can travel in 1 year. Since, We know the speed of light (c) in vacuum= 299792458 metres per second And, there are 365.25 days in an year, or t= (365.25*24*60*60) seconds Hence a light-year (d)=c*t =299792458Ă—365.25Ă—24Ă—60Ă—60 metres =9,460,730,472,580,800 metres â‰9.46073Ă—10^15 metres</span>

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2 years ago

According to the Universal Law of Gravitation, if the separation between two planets is increased by a factor of 8, how many tim

madam [21]

Answer:

weakens by 64 times

Explanation:

According to universal law of gravitation the force between two bodies is inversely proportional to square of their distance between them that F is inversely proportional to $r^2$

So if we increase the the distance between two planets by 8 times then the the mutual attraction between will be decrease by $8^2$ times

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3 years ago

What is magnetic resonance ???​

What is magnetic resonance ???