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3 years ago

HELP RIGHT NOW THE RIGHT ANSWER GETS BRAINLEST!!!

Physics

2 answers:

gregori [183]3 years ago

5 0

Answer:

Solar Flares: C

Prominences: A

Sun Spots: D

Convection: B

Explanation:

cupoosta [38]3 years ago

3 0

Solar Flares: C
Prominences: A
Sun Spots: D
Convection: B

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A shopping mall has a length of 200 m and a width of 75 m. What is the area of the mall?

sweet [91]

To find the area, we just need to multiply the length by the width. 200 x 75 = 15,000. The mall has an area of 15,000 sq. feet.

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3 years ago

When a potential difference of 12 V is applied to a wire 6.7 m long and 0.31 mm in diameter the result is an electric current of

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3 years ago

A disk of mass M and radius R rotates at angular velocity ω0. Another disk of mass M and radius r is dropped on top of the rotat

AleksandrR [38]

Answer:

$\omega = \frac{(R^2\omega_o}{(R^2 + r^2)}$

Explanation:

As we know that there is no external torque on the system of two disc

then the angular momentum of the system will remains conserved

So we will have

$L_i = L_f$

now we have

$L_i = (\frac{1}{2}MR^2)\omega_o$

also we have

$L_f = (\frac{1}{2}MR^2 + \frac{1}{2}Mr^2)\omega$

now from above equation we have

$(\frac{1}{2}MR^2)\omega_o = (\frac{1}{2}MR^2 + \frac{1}{2}Mr^2)\omega$

now we have

$\omega = \frac{MR^2\omega_o}{(MR^2 + Mr^2)}$

$\omega = \frac{(R^2\omega_o}{(R^2 + r^2)}$

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3 years ago

When decreasing electromagnetic radiation there is a(n)_______relationship between wavelength and frequency and the greater the

IceJOKER [234]

Answer:

Inverse proportion, greater

Explanation:

The relation between wavelength (λ) and frequency (ν) is given by

$\nu = \frac{c}{\lambda }$

Where $c$ speed of light in vacuum.

We can see from this equation that wavelength and frequency are related inversely.

Now,

$E= h \nu$

Where 'E' is energy of electromagnetic radiation and 'h' is Planck's constant.

We can see from this equation that greater frequency (ν) will give greater electromagnetic radiation (E). As they are directly proportional.

Hence,

When decreasing electromagnetic radiation there is a(n) Inverse proportion relationship between wavelength and frequency and the greater the frequency, the greater energy the electromagnetic radiation has

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3 years ago

The earth rotates once per day about its axis. where would you have to stand in order to have the smallest tangential speed?

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<span>The earth as a whole rotates with a fixed angular velocity. Therefore, you need to be at the rotation axis to have the smallest tangential speed. This would be at the north or south pole.</span>

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3 years ago