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3 years ago

What is the index of refraction of the glass?

Physics

1 answer:

Serggg [28]3 years ago

4 0

You don't need to do any calculations, you are already given that n=1.5
n is index of refraction. it's 1.5

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How facts differ from theroies?

frez [133]

Answer:

Facts and theories are two different things. In the scientific method, there is a clear distinction between facts, which can be observed and/or measured, and theories, which are scientists' explanations and interpretations of the facts.

Explanation:

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4 years ago

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Pete is driving down a highway and sees a brown sign. All of the brown signs

pychu [463]

Answer:

Explanation:

He was using visual clues to read the signs.

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3 years ago

I notice the wheels on my bicycle spin in a circular motion as I am pedaling. I know that the

kherson [118]

Answer:

Acceleration, a = 750m/s²

Explanation:

Given the following data;

Radius, r = 0.31m

Velocity, v = 15m/s

To find the centripetal acceleration;

$Acceleration, a = \frac {v^{2}}{r}$

Substituting into the equation, we have;

$Acceleration, a = \frac {15^{2}}{0.31}$

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6 0

3 years ago

22= 1/2 9.8 t^2

djverab [1.8K]

Answer:

5790 i dony kiow

Explanation:

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3 years ago

(II) A 0.72-m-diameter solid sphere can be rotated about an axis through its center by a torque of 10.8 m • N which accelerates

kozerog [31]

Answer:

$m = 23.3 kg$

Explanation:

As we know that it will have constant torque on it

so the acceleration of the ball will be constant so here we can say that we can use kinematics equation

$\theta = \omega_i t + \frac{1}{2}\alpha t^2$

$160(2\pi) = 0 + \frac{1}{2}\alpha (15^2)$

$320 \pi = 112.5 \alpha$

so we have

$\alpha = \frac{320\pi}{112.5}$

$\alpha = 8.94 rad/s^2$

now we know that

$\tau = I \alpha$

$10.8 = I(8.94)$

$I = 1.21 kg m^2$

so we know that

$I = \frac{2}{5}mR^2$

here we know that

diameter = 0.72 m

so radius (R) = 0.36 m

$\frac{2}{5}m(0.36^2) = 1.21$

$m = 23.3 kg$

8 0

3 years ago