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
MArishka [77]
3 years ago
12

A light beam which is amplified into a strong concetrated beam of light is known as A) a laser. B) a transistor. C) a microwave

oven. D) a light emitting diode.
Physics
2 answers:
valentina_108 [34]3 years ago
5 0

Answer:

The answer is (A)!

Explanation:

murzikaleks [220]3 years ago
4 0

The correct answer is A. a <em>Laser</em>.

You might be interested in
The octet rule states that in chemical compounds atoms tend to have
Marrrta [24]

Answer:

In chemical compounds, atoms tends to have the electron configuration of a noble gas.

Explanation:

The noble gases are unreactive because of their electron configurations. This noble gas neon has the electron configuration of 1s22s22p6 . It has a full outer shell and cannot incorporate any more electrons into the valence shell.

The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons and thus the electron configuration of a noble gas. An exception to an octet of electrons is in the case of the first noble gas, helium, which only has two valence electrons.

4 0
3 years ago
Read 2 more answers
Ice that formed thousands of years ago is often found to contain tiny bubbles of gas. this gas came from __________. ice that fo
motikmotik
Atmosphere

Atmospheric gas from prehistoric eras is found trapped in glaciers in the form of bubbles. These gas bubbles are the basis of studying ice cores as they provide us with accurate estimates of the conditions of past climates. The bubbles allow us to determine the composition of atmospheric air, such as the carbon dioxide and methane concentrations, as well as allow us to determine air temperatures in the past.
8 0
3 years ago
Assuming that Albertine's mass is 60.0 kg , for what value of μk, the coefficient of kinetic friction between the chair and the
makvit [3.9K]

Answer:

\mu_k=0.101

Explanation:

It is given that,

Mass of Albertine, m = 60 kg

It can be assumed, the spring constant of the spring, k = 95 N/m

Compression in the spring, x = 5 m

A glass sits 19.8 m from her outstretched foot, h = 19.8 m

When she just reach the glass without knocking it over, a force of friction will also act on it. Using the conservation of energy for the spring mass system such that,

\dfrac{1}{2}kx^2=\mu_k mgh

\mu_k=\dfrac{kx^2}{2mgh}

\mu_k=\dfrac{95\times (5)^2}{2\times 60\times 9.8\times 19.8}

\mu_k=0.101

So, the coefficient of kinetic friction between the chair and the waxed floor is 0.101. Hence, this is the required solution.

3 0
3 years ago
U1=20 m/s turn it to km/h
notka56 [123]
It is 72 km/h
I hope it helps
7 0
3 years ago
When lamps with wattages greater than the rating of the luminaire are installed, a fire could occur because the luminaire is bei
sergejj [24]

Answer:

true

Explanation:

Yes, it is true.

As the wattage is more than the prescribed wattage, it becomes overheated.

6 0
3 years ago
Other questions:
  • PLEASE help me!!! ASAP!! Ill mark you as brainliest!!!!
    9·1 answer
  • What is the main difference between the atmospheres of Jupiter and Neptune?
    12·2 answers
  • Objects that conduct electricity poorly are called
    5·2 answers
  • A frog leaping upward off his lily pad instead of continuing on in a straight line . Which law is it ?
    15·2 answers
  • Which bone is located in the thigh or upper hind limb, articulating at the hip or knee?
    9·1 answer
  • What is the main difference between analog anddigital technology?a. Digital technology reproduces sound more faithfullythan anal
    13·1 answer
  • "175 years" is a measurement of a _____ quantity ?
    14·1 answer
  • Please help!
    7·2 answers
  • A thundercloud has an electric charge of 48.8 C near the top of the cloud and –41.7 C near the bottom of the cloud. The magnitud
    11·1 answer
  • Which of the following is a correct<br> definition of the word "contingencies"?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!