PHYSICS HIGH SCHOOL

A planet has twomoons.  The first moon has an orbital
period of 1.262 Earth days and an orbital radius of 2.346 x 104
km.  The second moon has an orbital
radius of 9.378 x 103 km. 
What is the orbital period of the second moon?  

Answers

Answer 1
Answer: Kepler's third law hypothesizes that for all the small bodies in orbit around the
same central body, the ratio of (orbital period squared) / (orbital radius cubed)
is the same number.

Moon #1:  (1.262 days)² / (2.346 x 10^4 km)³

Moon #2:  (orbital period)² / (9.378 x 10^3 km)³

If Kepler knew what he was talking about ... and Newton showed that he did ...
then these two fractions are equal, and may be written as a proportion.

Cross multiply the proportion:

(orbital period)² x (2.346 x 10^4)³ = (1.262 days)² x (9.378 x 10^3)³

Divide each side by (2.346 x 10^4)³:

(Orbital period)² = (1.262 days)² x (9.378 x 10^3 km)³ / (2.346 x 10^4 km)³

               =  0.1017 day²

Orbital period = 0.319 Earth day = about 7.6 hours.

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What is a scientific paradigm

Answers

a scientific paradigm is is a distinct set of concepts or thought patterns, including theories, research methods, postulates, and standards for what constitutes legitimate contributions to a field.

What symbol is used to represent internal energy in the first law of thermodynamics?A. Q
B. W
C. U
D. V

Answers

Answer:

\Delta U = Q - W

aka—^

(ΔU = Q − W)

The symbol for Internal Energy Change isΔU. It is the sum of all the microscopic energies such as: translational kinetic energy. vibrational and rotational kinetic energy.

Answer:

C. U

Explanation:

HOPE THAT HELPS :)

What is a lunar eclipse?

Answers

Moon eclipse is when the moon interposes between the sun and behind the Earth. The moon passes behind the Earth into its umbra and not viceversa! This is possible when the three of them are ALIGNED (in syzygy). In Romania, there was such eclipse that could be seen at an October night last year.
A lunar eclipse is basically when the earth passes between the moon and sun, causing the moon to appear darkened. Also, unlike the solar eclipse, the lunar eclipse occurs during the day.

Who was the first man in orbit? A. Neil Armstrong
B. Yuri Gagarin
C. John Glenn
D. Valentina Tereshkova

Answers

         Believe it or not, the Russians were the first ones in space! So actually yuri Gagarin was the first man in orbit. Hope this helped :D

Answer:

Yuri Gagarin

Explanation:

He was the first man in orbit

Plizz help meeee thanks and have a wonderful day ​

Answers

Answer:

This is a Upside down Glass of Water Experiment

Explanation:

Explanation:

if I interpret the graphic correctly, then there is a basin fully filled with water on the left, then a piece of paper of a piece of glass, where the paper is in contract with the water on the left, and some water is delivered to the right.

then i suspect this shows the capillary effect of very narrow channels of water. like in the very tiny spaces between the fibers of the paper. as long as the paper is in contact with the water on the left, and the level of water is there higher than on the right, the surface tension of water kind of propels itself further along these narrow channels in the paper and supported by gravity and air pressure it drops even into the other side.

A source from which organisms generally take elements is called a/an A. exchange pool.
B. food web.
C. reservoir.
D. biotic community.
answered|Score .8

Answers

 a source from which organisms generally take elements is called a food web
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