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3 years ago

5

The corona sends out a stream of charged particles called

1 answer:

zimovet [89]3 years ago

3 0

CMEs. Coronal mass ejections

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The Manhattan project produced the first

Yuri [45]

Answer:

D

Explanation:

4 0

3 years ago

World oil reserves amount to about 10,000 EJ, and humankind uses energy at the rate of roughly 18 TW. If all our energy came fro

Volgvan

Answer:

t=17.61 years.

Explanation:

Given that

Reserve of energy = 10,000 EJ

Energy used by human = 18 TW

We know that

$1\ E= 10^{18}$

$1\ T= 10^{12}$

So

$Reserve\ of\ energy = 10,000 \times10^{18} J$

$Reserve\ of\ energy = 10^{22} J$

$Energy\ used\ by\ human = 18 \times10^{12}\ W$

Lets t time after energy will be exhaust

So

$18 \times10^{12}\times t=10^{22}$

$t=\dfrac{10^{22}}{18 \times10^{12}}\ s$

$t=5.55\times 10^8 \ s$

We know that

1 year = 365 days

1 year = 365 x 24 hr

1 year = 365 x 24 x 3600 s

$1year =3.15\times 10^7\ s$

So

$t=\dfrac{5.55\times 10^8 }{3.15\times 10^7}$

t=17.61 years.

5 0

3 years ago

Is there Sound in space?

hodyreva [135]

No there is not sound in space

3 0

3 years ago

Read 2 more answers

I need 8&9 thank youuu please check the picture

qaws [65]

Answer:

8. B. we see comets when they approach the sun.

9. A. the sun's surface.

8 0

3 years ago

Who is the first astraunot in the world

never [62]

who is the first astraunot in the world

Answer:

<h2>Yuri Gagarin</h2>

Explanation:

full name: Yuri Alekseyevich Gagarin

Hope it helps:)

#CarryOnLearning

3 0

3 years ago

Read 2 more answers