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2 years ago

Which of the following choices describes the type of image formed by a plane mirror?

Physics

2 answers:

Aleks04 [339]2 years ago

8 0

Virtual upright and the same size

gizmo_the_mogwai [7]2 years ago

3 0

Answer:

Virtual, Upright and the same size

Explanation:

As we know for plane mirror we have

$d_i = -d_0$

image distance is same as that of object distance but on opposite side of the mirror.

now for the magnification we have

$m = -\frac{d_i}{d_0}$

$m = +1$

since magnification is positive so it must be virtual and upright image and since the magnitude of magnification is exactly 1 so it must be of same size as that of object size

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A laser beam enters a 12.0 cm thick glass window at an angle of 33.0° from the normal. The index of refraction of the glass is 1

Alenkinab [10]

Answer:

The time is 0.563 ns.

Explanation:

Given that,

Index of refraction of glass = 1.41

Distance = 12.0 cm

Angle = 33.0°

We need to calculate the refraction angle

Using Snell's law

$n_{1}\sin\theta=n_{r}\sin\theta$

put the value into the formula

$1\times\sin33=1.41\sin\theta$

$\sin\theta=\dfrac{1\times\sin33}{1.41}$

$\theta=22.71^{\circ}$

We need to calculate the velocity of beam in glass

Using formula of velocity

$v=\dfrac{c}{n}$

Put the value into the formula

$v=\dfrac{3\times10^{8}}{1.41}$

$v=2.13\times10^{8}\ m/s$

We need to calculate the time

Using formula of distance

$v=\dfrac{d}{t}$

$t=\dfrac{12.0\times10^{-2}}{2.13\times10^{8}}$

$t=5.63\times10^{-10}\ sec$

$t=0.563\times10^{-9}\ sec$

$t=0.563\ ns$

Hence, The time is 0.563 ns.

6 0

2 years ago

Choose the element that has a smaller atomic radius :scandium or selenium

nikdorinn [45]

Choose the element that has a smaller atomic radius :scandium

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2 years ago

1. What do you think determines the type of traits you inherit?

Ainat [17]

Answer: How dominant one persons genes are.

Explanation:

The more dominant a trait is, the more likely someone will inherit them.

6 0

2 years ago

Recommend An architect wants to design a conference room that

nordsb [41]

Answer:

Install sound absorbers such as foam or acoustical panels

Explanation:

They could install some sound absorbers such as foam or acoustical panels in the walls, floors, and ceiling of the conference room.

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Bingel [31]

The buoyant force won't change.

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