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torisob [31]
3 years ago
13

The device that is made up of many single slits that diffract light and form a diffraction pattern , is called

Physics
2 answers:
Sergeeva-Olga [200]3 years ago
7 0

Gọi là máy quang phổ kế

aniked [119]3 years ago
4 0

That's a diffraction grating.

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The rate at which light energy is radiated from a source is measured in which of the following units?
Tamiku [17]
The correct answer is A. Lumen

This is the so called energy of light measurement. Other mentioned measurements are used for different things such as measuring light over an area of space or similar.
6 0
3 years ago
Place a small object on the number line below at the position marked zero. Draw a circle around the object. Mark the center of t
Murrr4er [49]
Can you post a picture of the whole thing please
6 0
3 years ago
What is the answer for this please
RoseWind [281]

Answer:

NEil bohr

Explanation:

option number 1

7 0
3 years ago
A small bulb is rated at 7.5 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity α = 0.
alisha [4.7K]

To solve this problem we will apply the concepts related to resistance as a function of temperature, product of the relationship between the squared voltage and the power. Mathematically this is,

R = \frac{v^2}{P}

Here,

R = Resistance (At function of temperature)

v = Voltage

P = Power

Then we have,

R at 140°C (7 times room temperature),

R(140\°C) = \frac{125^2}{7.5}

R(140\°C) = 2083.33\Omega

The relationship between normal temperature and increased temperature would then be given by,

R(140\°C) = R(20\°C)(1 +\alpha (\Delta T))

R(140\°C) = R(20\°C)(1+(4.5*10^{-3})(140-20))

R(20\°C) = \frac{2083.33}{1.54}

R(20\°C) = 1352.81\Omega

Therefore the correct value of the group of answer is 1350

5 0
3 years ago
How much brighter is a Sun-like star than the reflected light from a planet orbiting around it?
zloy xaker [14]

Answer:

E) a billion times brighter

Explanation:

  • <u>The sun is a star, which is about billion times brighter as the reflected light from any planet orbiting around it. </u>
  • The brightness is based on its composition and its position from the planet. The sun happens to be the brightest star on the Earth's sky which is about 13 billion times brighter than the next brightest star.
8 0
3 years ago
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