1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lapatulllka [165]
3 years ago
6

Why quantity refractive index dooesn't have unit

Physics
2 answers:
ASHA 777 [7]3 years ago
5 0
Refractive Index is a ratio of two similar physical quantity which is dimension less
refractive index = sin I / sin r

therefore it doesn't have a unit.
LenaWriter [7]3 years ago
4 0

Refractive index is expressed as a ratio of speed of light in vacuum relative to the speed of considered medium. As it is a ratio and the units m/s or km/h cancel out each other. Therefore, the qauntity refractive index does not have any unit. I hope it will be helpful to you. Thank you

You might be interested in
How to find the total displacement of an object ?
OLga [1]

Answer:

it can be calculated by measuring the final distance away from a point, and then subtracting the initial distance

8 0
3 years ago
The mass of an electron is _______. What is it?
SOVA2 [1]
If a mass of a neutron is 1 the electron mass is 0.00054386734 and it's charge is negative. Hope this helps! ;)
5 0
3 years ago
An electric motor consumes 8.40 kJ of electrical energy in 1.00 min. Part A If one-third of this energy goes into heat and other
Salsk061 [2.6K]

Answer:

The torque is 0.31 Nm.

Explanation:

Electrical energy, E = 8400 J

time, t = 1 min

Angular speed, w = 2900 rpm = 303.53 rad/s

efficiency = 2/3 of input power

The toque is given by  

P =\tau  w\\\\\frac{2}{3}\times \frac{E}{t}=\tau w\\\\\frac{2}{3}\times \frac{8400}{60}=\tau \times 303.53\\\\\tau =0.31 Nm

3 0
3 years ago
A portable x-ray unit has a step-up transformer. The 120 V input is transformed to the 100 kV output needed by the x-ray tube. T
slega [8]

Answer:

 N_s\approx41667 \hspace{3}lo ops

Explanation:

In an ideal transformer, the ratio of the voltages is proportional to the ratio of the number of turns of the windings. In this way:

\frac{V_p}{V_s} =\frac{N_p}{N_s} \\\\Where:\\\\V_p=Primary\hspace{3} Voltage\\V_s=V_p=Secondary\hspace{3} Voltage\\N_p=Number\hspace{3} of\hspace{3} Primary\hspace{3} Windings\\N_s=Number\hspace{3} of\hspace{3} Secondary\hspace{3} Windings

In this case:

V_p=120V\\V_s=100kV=100000V\\N_p=50

Therefore, using the previous equation and the data provided, let's solve for N_s :

N_s=\frac{N_p V_s}{V_p} =\frac{(50)(100000)}{120} =\frac{125000}{3} \approx41667\hspace{3}loo ps

Hence, the number of loops in the secondary is approximately 41667.

3 0
3 years ago
1. What force is needed to accelerate the stone of
Leokris [45]

Answer:

i think its a

Explanation:

and next is 4

6 0
2 years ago
Other questions:
  • Two moving objects collide and move apart on paths 90 degrees apart. The total momentum after the collision is _______ the total
    12·1 answer
  • Which is true about refraction from one material into a second material with a greater index of refraction when the incident ang
    5·1 answer
  • Match Newton's laws with their descriptions. 1. Every applied force is opposed by an equal force. 2 .A force must be applied to
    11·1 answer
  • Explain, briefly, what the electrical field inside a microwave oven does to heat food.
    11·1 answer
  • A space vehicle approaches a space station in orbit. The intent of the engineers is to have the vehicle slowly approach, reducin
    15·1 answer
  • Ok these are my last points say hi if u want brainliest
    14·2 answers
  • In an experiment the mass of a calorimeter is 36.35 g . Express in micrometer ,millimetre and kg.
    7·1 answer
  • The bumper cars crash into each other and stop. Explain why both bumper cars stop after the crash. [4marks]
    9·1 answer
  • Two men are standing on a frictionless ice surface holding opposite ends of a rope. One man (mass = 80 kg) pulls on the rope wit
    12·1 answer
  • The radius of a planet is 2400 km, and the acceleration due to gravity at its surface is 3.6 m/s2.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!