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Masja [62]
3 years ago
15

Galileo’s most important contribution to astronomy was his

Physics
2 answers:
olchik [2.2K]3 years ago
6 0

The answer is D I just took the test.

ikadub [295]3 years ago
3 0

When Galileo got ahold of a little telescope ... no more than
a kid's toy today ... he soon turned it towards the night sky. 
The story says that he was the first one to do that.  Apparently
everyone else who had these things used them to look at their
neighbors' windows.  Anyway, When Galileo looked at Jupiter,
he saw four tiny dots.  As he watched them night after night, he
saw that the four dots always stayed with Jupiter, but got nearer
and farther from it.  He eventually realized that they were small
bodies in orbit around Jupiter.  And then ... because he was Galileo ...
he made the big intellectual jump:  He reasoned that if there were
smaller bodies in orbit around Jupiter, then Jupiter and the other
planets might also be in orbit around something, and not necessarily
around the Earth.  He understood this as evidence that the sun is
the center of the solar system.
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How much force is needed to push a 54kg sled that is accelerating 5 m/s^2
PtichkaEL [24]

Answer:

270 N

Explanation:

To find force you need to multiply mass (kg) times acceleration (m/s^2).

54*5=270

6 0
3 years ago
A certain nuclear power plant is capable of producing 1.2×10^9 W of electric power. During operation of the reactor, mass is con
alukav5142 [94]

Answer:

0.00016 kg

Explanation:  

Given:

Power = P = 1.2 × 10⁹ Watts

Power =  work done / Time

efficiency = 0.30

Input power = 1.2 × 10⁹ / 0.30 =  4  × 10⁹ W

Energy =  4  × 10⁹ x 60 x 60 = 1.44 x 10¹³ joules

E = m c² , where c is the speed of light and m is the mass.

⇒ mass = m = E / c²  = (1.44 x 10¹³) / (3 × 10⁸ )²

                                   = 0.00016 kg

6 0
4 years ago
Mr. hitch taught us about sedimentary, metamorphic, and igneous rocks. he described how they were formed, what they contain, and
Tems11 [23]
Mr. Hitch taught us about sedimentary, metamorphic, and igneous rocks. He described how they were formed, what they contain, and showed us samples of each. He is a good geologist. 

The missing word and answer is: geologist.
3 0
3 years ago
After the first solid grains formed in our solar system, these particles could then grow by the process of ____, the collision a
labwork [276]

Answer:

Accretion

Explanation:

Accretion is the process by which there is an accumulation of particles into a bigger object by attracting more mass by gravitational force into an accretion disk. This is one of the first steps in the formation of our solar system. There was a collapse of a gas cloud which resulted in most of the mass collecting in the center leading to the formation of the sun and the rest spread out forming the planets.

4 0
3 years ago
What is the meaning of s in heat energy?​
ValentinkaMS [17]

Answer:Specific heat is the amount of heat required to raise one gram of any substance one degree Celsius or Kelvin. The formula for specific heat is the amount of heat absorbed or released = mass x specific heat x change in temperature.

.

Explanation:

HOPE IT HELP

6 0
3 years ago
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