Someone please help on this one?

Answers

Answer 1

Answer:

so other scientists can see how spread out your data are

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An Earth satellite in orbit emits a radio signal of constant frequency. Compared to the emitted frequency, the frequency of the signal received by a stationary observer will appear to be:a) higher as the satellite approachesb) higher as the satellite moves awayc) lower as the satellite approachesd) unaffected by the satellite's motion
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Which "sphere" does an astronomer most directly study?a. biosphere
b. exosphere
c. geosphere
d. cryosphere E. atmosphere F. hydrosphere

Answers

I would choose B. exosphere. Astronomers study outer space, planets and ect.

Answer:

exosphere

Explanation:

exosphere is space

astronomy is space

Assumes matter is made of small particles in constant motion

Answers

Kinetic molecular Theory of Matter. This is the model or theory that you are looking for.

Which action is due to field forces?Select one of the options below as your answer: A. an apple falling from a tree B. a moving car stopping when the brakes are applied C. the rowing of a boat D. pushing a chair against the wall

Answers

Field force is when the force which you exert on prticular subject acts only on this subject, other subjects that sorround yours are not included, whereas the like gravity acts equally on everything. So the correct answer is D. pushing a chair against the wall.

Answer:

D. pushing a chair against the wall.

Explanation:

Which climate might one expect for Europe?a. temperate
b. polar
c. arctic
d. tropical

Answers

temperate.

polar and arctic are the same thing, so they're eliminated.

you're left with beach weather or normal weather. Europe is not a big beach, so I'd go with normal, temperate.

PLEASE HELP!! Use the information below to solve this problem: A note has a wavelength of 0.65551 m. If the speed of sound is 343.00 m/s, what pitch is this note? speed of sound in air: 343 m/s

A. 440.00 Hz
B. 493.88 Hz
C. 523.25 Hz
D. 587.33 Hz
E. 659.26 Hz
F. 698.46 Hz
G. 783.99 Hz

Answers

Answer:

Explanation:

Given that a note has a wavelength of 0.65551 m. If the speed of sound is 343.00 m/s, the pitch of the note is the same as the frequency.

Sound Velocity = product of frequency and wavelength.

Substitute wave speed and wavelength into the formula

343 = f × 0.65551

Make f the subject of formula

F = 343 / 0.65551

F = 523.58 Henz

Therefore, the pitch of the note is 523.52 Hz approximately

The correct answer is option C

How is energy related to the change of state represented by the model? a.atoms gain energy as a gas changes to a solid.
b.atoms gain energy as a gas changes to a liquid.
c.atoms lose energy as a gas changes to a solid.
d.atoms lose energy as a gas changes to a liquid.

Answers

I think the correct answer from the choices listed above is option C. The energy related to the change of state represented by the model would be that the atoms lose energy as a gas changes to a solid. Hope this answers the question. Have a nice day.

Answer:

option C

Explanation:

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