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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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The core of a certain reflected reactor consist of a cylinder 10 ft high 10 ft in diameter The measured maximum-to-average flux
Westkost [7]

Answer:

The maximum power density in the reactor is 37.562 KW/L.

Explanation:

Given that,

Height = 10 ft = 3.048 m

Diameter = 10 ft = 3.048 m

Flux = 1.5

Power = 835 MW

We need to calculate the volume of cylinder

Using formula of volume

V =\pi r^2 h

Put the value into the formula

V=\pi\times(1.524)^2\times 3.048

V= 22.23\m^3

V = 22.23\times10^{3}\ Liter

We need to calculate the maximum power density in the reactor

Using formula of power density

P=\dfrac{E}{V}

Where, P = power density

E = energy

V = volume

Put the value into the formula

P=\dfrac{835\times10^{6}}{22.23\times10^{3}}

P=37561.85 = 37.562\times KW/L

Hence, The maximum power density in the reactor is 37.562 KW/L.

6 0
3 years ago
PLEASE HELP ME!!!!!!!
melamori03 [73]

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6 0
3 years ago
Electromagnetic waves are ........... by shiny surfaces.
sleet_krkn [62]

Answer:

Electromagnetic waves are reflected

Explanation:

Reflection of light (and other forms of electromagnetic radiation) occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. ... This concept is often termed the Law of Reflection.

4 0
3 years ago
What is the equation for force
Basile [38]
The equation is F=ma :)
3 0
3 years ago
Read 2 more answers
Options: A.) 10 N B.) 15 N C.) 25 N D.) 35N
Lady_Fox [76]

Given:

F_gravity = 10 N

F_tension = 25 N

Let's find the net centripetal force exterted on the ball.

Apply the formula:

\sum ^{}_{}F_{\text{net}}=F_1+F_2=F_{centripetal}

From the given figure, the force acting towards the circular path will be positive, while the force which points directly away from the center is negative.

Hence, the tensional force is positive while the gravitational force is negative.

Thus, we have:

F_{\text{net}}=F_{\text{centripetal}}=F_{tension}-F_{gravity}=25N-10N=15N

Therefore, the net centripetal force exterted on the ball is 15 N.

ANSWER:

15 N

7 0
1 year ago
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