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2 years ago

1. Order the materials from smallest refractive index to largest refractive index.

Physics

1 answer:

slavikrds [6]2 years ago

3 0

Air = 1

Water = 1.33

Glass = 1.52

Quartz = 1.46

Diamond = 2.42

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A block of mass m slides with a speed vo on a frictionless surface and collides with another mass M which is initially at rest.

Rudik [331]

To solve this problem we will apply the concepts related to the conservation of momentum. Momentum can be defined as the product between mass and velocity. We will depart to facilitate the understanding of the demonstration, considering the initial and final momentum separately, but for conservation, they will be later matched. Thus we will obtain the value of the mass. Our values will be defined as

$m_1 = m$

$m_2 = M$

$v_{1i} =v_0$

$v_{2i} = 0$

Initial momentum will be

$P_i = m_iv_{1i}+m_2v_{2i}$

$P_i = mv_0$

After collision

$v_{1f} = v_{2f} = \frac{v_0}{3}$

Final momentum

$P_f = (m_1+m_2)(\frac{v_0}{3})$

$P_f = (m+M)(\frac{v_0}{3})$

From conservation of momentum

$P_f = P_i$

Replacing,

$(m+M)(\frac{v_0}{3})=mv_0$

$(m+M)\frac{1}{3} = m$

$m+M=3m$

$M=3m-m$

$M=2m$

3 0

3 years ago

What is a therapuetic modality in psychology?

noname [10]

Answer:

There are several modalities, or methods, of treatment: individual therapy, group therapy, couples therapy, and family therapy

Explanation:

4 0

2 years ago

Read 2 more answers

If the sun suddenly ceased to shine, how long would it take earth to become dark? you will have to look up the speed of light in

sleet_krkn [62]

We are 8 light minutes from the sun. That means two things, we see the sun as it was 8 minutes ago, and we WOULD continue to see the sun for 8 minutes after it disappeared.

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3 years ago

Town A lies 15 km north of town B. Town C lies 10 km west of town A. A small plane flies directly from town B to town C. What is

ZanzabumX [31]

Answer:

the correct answer is b

Explanation:

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3 years ago

A sinusoidal sound wave moves through a medium and is described by the displacement wave function

ZanzabumX [31]

By applying the wave equation we know that the maximum speed of the element's oscillatory motion is 1716 micrometer / s.

We need to know about wave equations to solve this problem. The displacement of the wave on the y-axis can be explained by the wave equation

y = A cos (kx - ωt)

where y is y-axis displacement, A is amplitude, k is wave number, x is x-axis displacement, ω is angular speed and t is time.

the wavenumber and angular speed of the wave equation can be determined respectively by

k = 2π / λ

ω = 2πf

where k is the wavenumber, λ is wavelength and f is frequency.

From the question above, we know that:

y = 2.00cos (15.7x - 858t)

v = dy / dt

v = d(2.00cos (15.7x - 858t)) / dt

v = -858 x (-2.00sin(15.7x - 858t))

v = 1716 sin(15.7x - 858t) micrometer/s

maximum velocity can be reached when (sinθ = 1), hence

v = 1716 sin(15.7x - 858t)

v = 1716 x 1

v = 1716 micrometer / s

For more on wave equation on: brainly.com/question/25699025

#SPJ

4 0

1 year ago