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Minchanka [31]
3 years ago
11

The orbital period of an object is 2 x 10^7 and its total radius is 4 x 10^4 m.

Physics
2 answers:
SVETLANKA909090 [29]3 years ago
7 0

Answer:

12566

Explanation:

Use formula: vt=2pir/t

Ostrovityanka [42]3 years ago
7 0

Answer:

12,566 not 12560 because edgenuity doesnt want you to round by the tenths only by the ones

Explanation:

Because 2* pi * 4x10^10 = 251327412400 (Dont round the pi to 3.14)

and divide it by 2x10^7

you get 12,566.37 which its 12,566 (and dont add punctuation, stated on the quiz)

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A big box of sausages (30 kg) are lifted from the ground to the top shelf of the freezer. If the box is lifted at a constant spe
morpeh [17]

Answer:

The work done by gravity moving the box up is -514.5 Joules.

Explanation:

The gravity acts in the direction of the displacement, which in this case is negative (ground - top shelf), and so the resulting work is negative. The work is calculated as:

W_g = mg\Delta h = 30kg\cdot 9.8\frac{m}{s^2}\cdot(0-1.75)m=-514.5J

The work done by gravity moving the box up is -514.5 Joules.


4 0
3 years ago
The most recent evidence supporting the theory of plate tectonics would include A) GPS monitoring of plate speeds and movements.
Whitepunk [10]

A) GPS monitoring of plate speeds and movements.

Explanation:

The most recent evidence supporting the theory of plate tectonics would be GPS monitoring of plate speeds and movements.

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  • Plate tectonics theory is the movement of the earth's lithosphere relative to one another.
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learn more:

Lithosphere brainly.com/question/9582362

#learnwithBrainly

5 0
3 years ago
Which kind of light is used to carry information through optical fibers?
ZanzabumX [31]
Red light would be commonly used due to the longer wavelength
3 0
3 years ago
A high speed train is traveling at a speed of 44.7 m/s when the engineer sounds the 415 Hz warning horn. The speed of sound is 3
il63 [147K]

Answer:

Explanation:

Speed of the source of sound = v = 44.7 m/s

Speed of sound = V = 343 m/s

a) Apparent  frequency as the train approaches = f =  [V /(V -v) ] × f

= [343 / (343 - 44.7) ] × 415  = 477.18 Hz

Wave length =  λ = v / f = 343 / 477.18 = 0.719 m

b) Frequency heard as the train leaves = f ' =  [V / ( V + v) ] f

                                                                     = [343 / { 343 + 44.7 ) ] x 415

                                                                      = 367.2 Hz

Wavelength when leaving = v / f = 343 / 367.2 = 0.934 m

8 0
3 years ago
Which statements does the Second Law of Thermodynamics support?
Mazyrski [523]
According to the second law of thermodynamics, 
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4 0
3 years ago
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