Plz help me and I will give u a brainliest in return

Physics

2 answers:

GalinKa [24]3 years ago

7 0

A galaxy is a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.

There are 100 billion galaxies

The Sun is just one of those 200 billion to 400 billion stars

vladimir1956 [14]3 years ago

4 0

A galaxy is a system of millions to billions of stars, and is held together by gravitational attraction. There are around 2 trillion galaxies.

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A distance between two consecutive troughs in a wave motion train produced in a string is 5 cm. Find speed of wave , if two comp

Alexxx [7]

Speed= (frequency) x (wavelength)

= (2 per second) x (5 cm) = <em><u>10 cm/sec .</u></em>

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3 years ago

Ishani and John now try a problem involving a charging capacitor. An uncharged capacitor with C = 6.81 μF and a resistor with R

DENIUS [597]

Answer:

$Q=81.72\times10^{-6}C$

$I=2.1\times10^{-5}A$

Explanation:

The maximum charge on the capacitor will be, at the end of the process, given by the formula (and for our values):

$Q=CV=(6.81\times10^{-6}F)(12V)=81.72\times10^{-6}C$

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5 0

2 years ago

Calculate the mass of -1.5C of electrons

algol13

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2 years ago

A solid cylinder with a mass of 2.72 kg and a radius of 0.083 m starts from rest at a height of 4.20 m and rolls down a 88.7 ◦ s

Bingel [31]

Explanation:

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