3 years ago

What is the hottest layer in the Sun's atmosphere?

Physics

2 answers:

pychu [463]3 years ago

8 0

The hottest layer in the Sun's atmosphere is the core.

Allisa [31]3 years ago

3 0

It is chromosphere the hottest layer of sun's atmosphere

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a man is standing on the edge of a 20.0m high cliff. he throws a rock vertically with an initial velocity of 10.0m/s. how high d

marin [14]

Answer:5m

Explanation:a=-10m/s (since it moved upwards against gravity)

V=0

U=10m/s

v2=u2+2as

0= 100-20s

20s=100

s=5m

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4 years ago

He has 54 cds and every box has 9 cds.how many boxes are in 54 cds?

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Solution:
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3 years ago

An electric car has a battery that can hold 16 kwh of energy. if the battery is designed to operate at 340 v, how many coulombs

Zanzabum

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Explanation:

energy stored in the battery= 16 KWh= 16 (1000 W)(3600 s)= 5.76 x 10⁷ J

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You find a bag labeled "10 kg of lead-210". Its contents now weigh 1.25 kg. How many half-life periods have there been since the

zlopas [31]

Answer : The number of half-life periods will be, 3

Explanation : Given,

Initial amount of lead = 10 kg

Amount of lead after decay = 1.25 kg

Half-life = 22 years

Formula used :

$a=\frac{a_o}{2^n}$

where,

a = amount of reactant left after n-half lives

$a_o$ = Initial amount of the reactant

n = number of half lives

$t_{1/2}$ = half-life

Now put all the given values in the above formula, we get:

$1.25=\frac{10}{2^n}$

$2^n=8$

$2^n=2^3$

$n=3$

Thus, the number of half-life periods will be, 3

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4 years ago