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3 years ago

How does friction affect the distance of an object?

Physics

1 answer:

stiv31 [10]3 years ago

4 0

It slows the object down so it cannot move well and evetually the object cannot be pushed and farther

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Colt1911 [192]

B

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8 0

3 years ago

When a bicycle coasts uphill, it moves slower and slower as it climbs. Why?

astra-53 [7]

Letter B because it is gaining more potential energy as it SLOWLY climbs up the hill.

the less motion the more potential energy there is

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3 years ago

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In a physics lab, light with a wavelength of 530 nm travels in air from a laser to a photocell in a time of 16.7 ns . When a sla

Harlamova29_29 [7]

Answer:

$\lambda'=78.086\ nm$

Explanation:

Given:

wavelength of light in the air, $\lambda=530\times 10^{-9}\ m$

time taken to travel from the source to the photocell via air, $t=16.7\ s$

time taken to reach the photocell via air and glass slab, $t'=21.3\times 10^{-9}\ s$

thickness of the glass slab, $x=0.87\ m$

Now we have the relation for time:

$\rm time=\frac{distance}{speed}$

hence,

$t=\frac{d}{c}$

c= speed of light in air

$16.7\times 10^{-9}=\frac{d}{3\times 10^8}$

$d=16.7\times 10^{-9}\times 3\times 10^8$

$d=5.01\ m$

For the case when glass slab is inserted between the path of light:

$\frac{(d-x)}{c} +\frac{x}{v} =t'$ (since light travel with the speed c only in the air)

here:

v = speed of light in the glass

$\frac{(5.01-0.87)}{3\times 10^8} +\frac{0.87}{v} =21.3\times 10^{-9}$

$v=4.42\times 10^7\ m.s^{-1}$

Using Snell's law:

$\frac{\lambda}{\lambda'} =\frac{c}{v}$

$\frac{530}{\lambda'} =\frac{3\times 10^8}{4.42\times 10^7}$

$\lambda'=78.086\ nm$

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3 years ago

How long dose long term alcohol abuse affect the liver?

Luda [366]

█ Question █

How can long term alcohol abuse affect the liver?

█ Answer █

Cirrhosis is liver damage from people who do alcohol abuse. The liver will be affected this way. The answer is letter B.

Hope that helps! ★ If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia

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2 years ago

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What are some of the physical benefits to be derived from aerobic

VladimirAG [237]

Some of the benefits are increased heart muscles, increase in blood flow, and reduced body fat

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3 years ago