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
kipiarov [429]
3 years ago
14

How was the speed of light determined

Physics
2 answers:
goblinko [34]3 years ago
5 0
Presently, the speed of light in a vacuum is defined to be exactly 299,792,458 m/s (approximately 186,282 miles per second). . An early experiment to measure the speed of light was conducted by Ole Romer, a Danish physicist, in 1676. Using a telescope, Ole observed the motions of Jupiter and one of its moons, Io
klemol [59]3 years ago
3 0

<u>Answer:</u>

Speed of light = 3 * 10 ^8 m / s. Speed is related to the distance and time and so its unit is in meters and seconds. The speed of light value mentioned above is the value calculated in vacuum or air with the help of lasers.

But when it comes to water, refractive index has to be taken into account.The speed of light is faster in vacuum than other mediums.

You might be interested in
I need help on this question!
Mashutka [201]

Explanation:

click the link you can get answer of the question

3 0
3 years ago
To make a given sound seem twice as loud, how should a musician change the intensity of the sound?
Serhud [2]

Answer:

C. Quadruple the intensity

Explanation:

The intensity of the sound is proportional to square of amplitude of the sound.

I ∝ A²

\frac{I_1}{A_1^2} = \frac{I_2}{A_2^2}\\\\I_2 = \frac{I_1A_2^2}{A_1^2}

When the given sound is twice loud as the initial value, then the new amplitude is twice the former.

A₂ = 2A₁

I_2 = \frac{I_1A_2^2}{A_1^2} \\\\I_2 = \frac{I_1(2A_1)^2}{A_1^2} \\\\I_2 = \frac{4I_1A_1^2}{A_1^2}\\\\ I_2 = 4I_1

Thus, to make a given sound seem twice as loud, the musician should Quadruple the intensity

3 0
3 years ago
Describe how cool and warm air move in the atmosphere.
Anna [14]

Answer:

it is cool and warm

Explanation:

5 0
3 years ago
What is the apparent magnitude of the brightest star in the Big Dipper?
alex41 [277]
The magnitude of Alioth ( the brightest star in the big dipper ) is 1.76 and it is about 81 light years distant from Earth. 
4 0
3 years ago
Read 2 more answers
What is the acceleration of a ball traveling horizontally with an initial velocity of 20 meters/second and, 2.0 seconds later, a
Alex777 [14]

Answer: d. 5 m/s^2

Explanation:

Acceleration is the change in velocity in a given time.

a = (30-20)/2 = 5

7 0
3 years ago
Read 2 more answers
Other questions:
  • A bug is on the rim of a disk of diameter 9 in that moves from rest to an angular speed of 76 rev/min in 6.5 s. what is the tang
    8·1 answer
  • Which test was conducted on the skin found under the victim’s nails
    8·2 answers
  • A simple pendulum consists of a point mass suspended by a weightless, rigid wire in a uniform gravitation field. Which of the fo
    6·1 answer
  • an empty paint tin of diameterv0.150m and height0.120m has amass of 0.22 kg it is filled with paint to within 7mm of the top its
    15·1 answer
  • Power describes the
    5·2 answers
  • Potential energy can be converted into kinetic energy, a good example of this is when a pole-vaulter bends the pole during a lea
    6·2 answers
  • Which image illustrates refraction?
    13·1 answer
  • What force is necessary to accelerate 32kg object by 2 m/s
    9·1 answer
  • ) The magnitude of scalar product of two unit vectors perpendicular to each other is ​
    7·1 answer
  • Projectile effects are a hazard in __________________. magnetic resonance imaging (MRI) fields pediatric units emesis stations o
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!