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lutik1710 [3]
3 years ago
13

Which statements describe velocity and acceleration? Check all that apply. Velocity equals displacement divided by time. All vel

ocities are “instantaneous” and occur only at a point in time. Velocity and acceleration are calculated using the same variables. Acceleration equals change in velocity divided by time. Acceleration is always constant; it cannot vary. Average velocity can be found by using several velocities and their total time.
Physics
1 answer:
zzz [600]3 years ago
7 0

Answer:

Velocity equals displacement divided by time.

Acceleration equals change in velocity divided by time.

Average velocity can be found by using several velocities and their total time.

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What distance does light travel in water, glass, and diamond during the time that it travels 1.0 m in vacuum? The refractive ind
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Answer:

refractive index for water,glass,diamond are 0.752m, 0.667m, 0.413m respectively

Explanation:

refractive index (n) = \frac{velocity of light in air/vacuum}{velocity of light in substance}

velocity =\frac{distance}{time}

The time for travel is kept constant for all mediums.

refractive index (n) = \frac{\frac{distance in vacuum}{time} }{\frac{distance in medium}{time} }\\ \\=\frac{distance in vacuum}{distance in medium}

distance in medium = \frac{distance in vacuum}{refractive index of medium}

S_{medium}  = \frac{S_{vacuum} }{n_{medium} }

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S_{water} = \frac{1 }{1.33}

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For diamond, n= 2.42

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3 0
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if we ignore air resistance the mass of an object does not affect the rate at which it accelerate why?​
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Answer:

See explanation

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The acceleration due to gravity on an object is independent of the mass of the object. This is so because, the acceleration due to gravity depends only on the radius of the earth and the mass of the earth.

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