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notka56 [123]
3 years ago
9

Mars has an orbital period of 1.88 years. In two or more complete sentences, explain how to calculate the average distance from

Mars to the sun, and then calculate it.
Physics
1 answer:
Katyanochek1 [597]3 years ago
6 0
By Kepler`s 3rd Law:
The square of the orbital period of a planet is directly proportional to a cube of semi-major axis of its orbit:
T² = R³
T = 1.88
1.88² = R³
3.5344 = R³
R = ∛ 3.5344 = 1.524 A U
1 Astronomic Unit = 149,600,000 km ( or the distance: Earth to the Sun )
1.524 * 149,600,600 = 227,990,400 <span>km
The average distance from Mars to the Sun is 227,990,400 km.</span>
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3 years ago
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A 26-kg sled is on a snow-covered slope. The coefficients of friction between the sled’s runners and the snow are µs = 0.096 and µ
sweet-ann [11.9K]

Answer:

Explanation:

Given

mass of sled =26 kg

coefficient of static friction \mu _s=0.096

coefficient of kinetic friction \mu _k=0.072

In order to move sled from rest we need to provide a force greater than static friction which is given by

f_s=\mu mg=0.096\times 26\times 9.8=24.46 N

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f_k=\mu _kmg=0.072\times 26\times 9.8=18.34 N

therefore minimum force to keep moving sledge at constant velocity is 18.34 N

3 0
3 years ago
An instrument that measures air pressure using a partially evacuated chamber is called a(n ________ barometer.
Jet001 [13]
The appropriate response is the Aneroid barometer. This kind of gauge has an incompletely cleared chamber that progressions shape, packing as barometrical weight increments and growing as weight declines.

I hope the answer will help you. 
6 0
3 years ago
What are the wavelength ranges for the following? (a) the AM radio band (540–1600 kHz) maximum wavelength m minimum wavelength m
Pie

Answer:

Explanation:

a ) AM radio band (540–1600 kHz)

frequency = 540 kHz = 540 x 10³ Hz

wave length = velocity of light / frequency

= 3 x 10⁸ / 540 x 10³

= 555.55 m

frequency = 1600 kHz = 1600 x 10³ Hz

wave length = velocity of light / frequency

= 3 x 10⁸ / 1600 x 10³

= 187.5  m

maximum wavelength  =   555.55 m

minimum wavelength =  187.5 m

b )

AM radio band (88 - 108 MHz)

frequency = 88 MHz = 88 x 10⁶ Hz

wave length = velocity of light / frequency

= 3 x 10⁸ / 88 x 10⁶

= 3.41 m

frequency = 108 MHz = 108 x 10⁶ Hz

wave length = velocity of light / frequency

= 3 x 10⁸ / 108 x 10⁶

= 2.78  m

maximum wavelength  =   3.41 m

minimum wavelength =  2.78 m

3 0
3 years ago
Lightning can sometimes occur on hot and humid summer evenings when there are no thunderstorms.
mart [117]

Answer:

(B) False

Explanation:

No, it is not possible to have thunder without lightning. Thunder is a direct result of lightning.

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3 years ago
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