3 years ago

Astronomers estimate that a galaxy contains a. 100 stars. c. millions or billions of stars. b. 1 star. d. 100,000 stars.

1 answer:

3 0

C.

Galaxies are very big, with millions or billions of stars in them.

Hope this helps!

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tatiyna

Work done = force * distance
work done = 200 * 20
work done = 4000J

4 0

3 years ago

Nostrana [21]

260 miles.................

3 0

3 years ago

Arada [10]

I would say the last option, since with an increase in temperature, water molecules will speed up.

7 0

2 years ago

IceJOKER [234]

Answer:

0.72 Hz minimum frequency

Explanation:

When the damping is negligible,Amplitude is given as

$A = (F/m)/[\sqrt{(\omega ^{^{2}}-\omega _{o}^{2}})^2$

here $\omega _{o}^{2}= k/m$ = (6.30)/(0.135) = 46.67 N/m kg

$F / mA$ = 1.70/(0.135)(0.480) = 26.2 N/m kg

From the above equation , rearranging for ω,

$\omega ^{2}= \omega _{o}^{2}\pm F/m$

⇒ ω² =46.67 ± 26.2 = 72.87 or 20.47

⇒ ω = 8.53 or 4.52 rad/s

Frequency = f

ω=2 π f

⇒ f = ω / 2π = 8.53 /6.28 or 4.52 / 6.28 = 1.36 Hz or 0.72 Hz

The lower frequency is 0.72 Hz and higher is 1.36 Hz

8 0

3 years ago

sladkih [1.3K]

SURE HI

HI HOW R U

Hello

4 0

2 years ago