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Wewaii [24]
2 years ago
7

An object of length 3.00 cm is inside a plastic block with index of refraction 1.40. If the object is viewed from directly above

, what is the length of its image?
Physics
1 answer:
Lilit [14]2 years ago
3 0
  • The length of its image = -3cm

Given,

length of object, h_o = 3 cm

We know, for flat refracting surface,  

Image distance = object distance

So,

magnification is = -1

length of the image,

h_i = magnification * h_o\\\\h_i = -1 * 3 \\\\h_i = -3cm

Here, negative sign means inverted image.

For more information on refraction, visit

brainly.com/question/14760207?referrer=searchResults

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The type of force measured by grocery store spring scale is
alexandr402 [8]

Answer:

Weight

Explanation:

The spring balance is used to measure weight of an object.

8 0
2 years ago
In a certain chemical process, a lab technician supplies 292 J of heat to a system. At the same time, 68.0 J of work are done on
vekshin1

Answer:

The increase in the internal energy of the system is 360 Joules.

Explanation:

Given that,

Heat supplied to a system, Q = 292 J

Work done on the system by its surroundings, W = 68 J

We need to find the increase in the internal energy of the system. It can be given by first law of thermodynamics. It is given by :

dE=dQ+dW\\\\dE=292\ J+68\ J\\\\dE=360\ J

So, the increase in the internal energy of the system is 360 Joules. Hence, this is the required solution.

3 0
2 years ago
Can someone give me some tips of how to study. I have already tried writing everything in my lesson but it doesn't seem to work
larisa [96]
Highlighter, color coding sections that go together, flash cards, relaxing with someone while they read out questions ( this will help with testing anxiety too). If you get distracted easily use games to study or small sayings instead of the usual white and black sheet of paper.
3 0
2 years ago
By how much do the critical angles for red (660 nm) and violet (410 nm) light differ in a diamond surrounded by air?
Stella [2.4K]

the critical angle for red light in diamond is 24.51°

critical angle for violet light in diamond is 24.01°.

given:

wavelength of red light λr =660nm

wavelength of violet light λv =410nm

refractive index for air=1

as the refractive index of red and violet colour in diamond is

Refractive index of red color nr= 2.407

Refractive index of violet color nv= 2.451

as it is mentioned that angle is critical angle,thus θr =90°

so,from Snell's law

n1sinθc=n2 sin 90°

Here,

n1 is the refractive index for incident medium

n2 is the refractive index for refractive medium

θc is the critical angle after which light starts reflecting internally

The critical angle for red light is here,n1=2.407, n2=1

n1sinθc=n2 sin 90°

2.407×sin θc=1×1

sin θc =(1/2.407)

θc=sin-1 0.415

θc=24.51°

Thus,the critical angle for red light in diamond is 24.51°

The critical angle for violet light is,

here,n1=2.451,n2=1

n1sinθc=n2 sin 90°

2.407×sin θc=1×1

sin θc= (1/2.451)

θc=sin-1 0.407

=24.01°

Thus,the critical angle for violet light in diamond is 24.01°.

learn more about Snell's law from here: brainly.com/question/2273464

#SPJ4

3 0
1 year ago
A magnet in the form of a cylindrical rod has a length of 5.51 cm and a diameter of 0.865 cm. It has a uniform magnetization of
andriy [413]

Answer:

Magnetic dipole moment will be15.51\times 10^{-3}J/T

Explanation:

We have given length of the cylinder , that is h = 5.51 cm = 0.051 m

And diameter of the cylinder d = 0.865 cm

So radius r=\frac{d}{2}=\frac{0.865}{2}=0.4325cm=0.4325\times 10^{-2}m

So volume of cylinder V=\pi r^2h=3.14\times (0.4325\times 10^{-2})^2\times 0.051=3\times 10^{-6}m^3

It is given there is uniform magnetization of M=5.17\times 10^3A/m

We have to fond the dipole moment

Dipole moment is equal to \mu =MV, here M is magnetization and V is volume

So \mu =MV=5.17\times 10^3\times 3\times 10^{-6}=15.51\times 10^{-3}J/T

5 0
3 years ago
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