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jek_recluse [69]
3 years ago
7

Light travels from the sun to the earth, a distance of 144,000,000,000 meters, in 480 seconds. Calculate the approximate velocit

y of light in the direction it travels toward the earth.
A.) 69,120,000,000,000 m/s
B.) 69,120,000,000 m/s
C.) 300,000,000 m/s
D.) 300 m/s
Physics
1 answer:
mel-nik [20]3 years ago
5 0

Answer:

The answer is C.) 300,000,000 m/s

Explanation:

Light travels at a constant rate of 300,000,000 m/s. this can be determined by dividing the distance (144,000,000,000 meters) by the time (480 seconds). that's pretty fast. in fact, nothing can travel any faster than this. ever.

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The complete question in the attached figure
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Answer:

60kgm/s

Explanation:

Given parameters:

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Unknown:

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The impulse of the frisbee is the same as the change in momentum.

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What is the intensity of a sound with a measured intensity level of 84 db? (i0 = 10-12 w/m2)?
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The unit measurement for sound can be expressed in terms of intensity and in decibels. The intensity of sound is the measure of its power over unit area. The common unit of measurement is in decibels. This is commonly used in measuring the extent of noise. The conversion from intensity to the decibel unit is through logarithmic function. The formula is:

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Substituting the values to the equation,

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2 years ago
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The answer is Rh = 135 cm^3 and B = 0.05185 wh/m^2


Explanation:

Resitivity of silicon = 0.1

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Required to find out concentration of electron , we know that

Rh = up

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