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g100num [7]
4 years ago
11

A student is working in a lab to determine how time affects impulse. The student keeps the force the same in each trial but chan

ges the impact time. Some data is shown.

Physics
2 answers:
notsponge [240]4 years ago
8 0

Answer:

Trail 3

Explanation:

As we know by Newton's II law that rate of change in momentum is always net force applied on the object.

Here we know that

F = \frac{\Delta P}{\Delta t}

now we also know that change in momentum is known as impulse

so here impulse and force relation is given as

impulse = F\Delta t

so here in order to find the greatest impulse we need to find the product of force and time to be the maximum as per above formula

so we have

trail 1

impulse = 500 (0.25) = 125 Ns

trial 2

impulse = 500(0.15) = 75 Ns

trial 3

impulse = 500(0.45) = 225 Ns

trial 4

impulse = 500(0.33) = 165 Ns

so out of the four trials maximum impulse is for trial 3

pishuonlain [190]4 years ago
4 0

yea some data is shown what is the question dude

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A ray of light crosses a boundary between two transparent materials. The medium the ray enters has a larger optical density. Whi
Tpy6a [65]

Answer:

The wavelength of the light decreases as it enters into the medium with the greater optical density.

The frequency of the light remains constant as it transitions between materials.

Explanation:

- When a ray of light crosses a boundary between two different materials, it undergoes refraction: the ray changes direction, and it also changes speed, according to the relationship:

v=\frac{c}{n}

where v is the speed of the ray of light in the material, c is the speed of light in a vacuum, n is the index of refraction of the material, which is larger for a medium with larger optical density. So, from the equation, we see that the larger the optical density, the smaller the speed of the wave.

- The frequency of the light does not depend on the properties of the medium, so it remains unchanged: therefore the statement

The frequency of the light remains constant as it transitions between materials.

is correct.

- Moreover, the wavelength of the ray of light is related to the speed and the frequency by the equation

\lambda=\frac{v}{f}

where v is the speed and f the frequency. Since we have seen that v decreases and f remains constant, this means that the wavelength decreases as well, so the statement

The wavelength of the light decreases as it enters into the medium with the greater optical density.

is also correct.

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3 years ago
I need help for a review sheet
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4 years ago
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Explanation:

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Ngan has a weight of 314.5 N on Mars and a weight 833.0 N on Earth. What is Ngan's mass on Earth?
mr_godi [17]

Ngan's mass on earth is 85kg.

Ngan has a weight on Mars = 14.5 N

Ngan’s weight on Earth = 833.0 N

Ngan’s mass on Earth = ?

<span>Fg,earth = mg(earth)</span>

<span>M = Fg,earth </span><span>/ g(earth)</span>

<span>M = 833.0 N / 9.8 m/s2</span>

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3 years ago
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nikitadnepr [17]

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3 years ago
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