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xxMikexx [17]
3 years ago
11

Mateo’s parents are thinking about investing money to help develop a new fusion power plant. Which issue is most important to co

nsider before making the investment?
a)Fusion has never been controlled, so how have they succeeded in doing it?
b)The fuel is quite limited, so have they discovered a more common fuel?
c)Fusion has been generating electricity for decades, so why build another fusion power plant?
d)Fusion requires high temperatures and pressures, so how have they reduced the energy cost for it?
Physics
2 answers:
Inessa [10]3 years ago
7 0
The answer is A because fusion has never been controlled in a non explosive manner. 
GrogVix [38]3 years ago
4 0
The answer is D i just took the test on e2020 hope this helps 
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lara [203]

Answer:

t = 0.325343 sec

Explanation:

given

mass of block(m) = 500 g

force constant  (k) = 25.0 N/m

we know simple harmonic motion equation as

y = A sin (ωt + Φ)

 where  Φ = sin^{-1} (-4/6)

so we get

Φ = - 0.729727656 rad  

and we know

\omega  = \sqrt{\frac{k}{m}

y = A sin (t\sqrt\frac{k}{m} - 0.729727656)

now substitute the values we get as

y = 0.06 m

0.06 = 0.06 sin (t\sqrt(\frac{25}{0.5}) - 0.729727656)

(t\frac{25}{0.5} - 0.729727656) = \frac{\pi}{2}

on solving these equation we get

t = 0.325343 sec

7 0
2 years ago
1 point
7nadin3 [17]

Answer:

Gravity

Explanation:

It is gravity because the sun's gravity pulls all the planets towards itself and keeps the planets in the sun's orbit

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abruzzese [7]

Answer:

Mass will be same on moon as on Earth but weight will be one-sixth of Earth.

Explanation:

Mass of a body doesn't depend on gravity. Mass is a constant quantity. So, mass on moon will be same as mass on Earth.

But, the weight of a body depends on gravity as weight is given as:

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Therefore, if g is acceleration due to gravity on Earth, then weight on Earth is, W_{E}=mg

Now, gravity on moon is one-sixth of Earth. So, g_{moon}=\frac{1}{6}g

Therefore, weight of the body on moon is, W_{moon}=mg_{moon}=m\times \frac{1}{6}g=\frac{1}{6}mg=\frac{1}{6}W_{E}

Therefore, a body has same mass both on moon and Earth but weight on moon is one-sixth of the weight on Earth.

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