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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>.

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Answer:

Explanation:

mass of the girl m₁ = 47.3 kg

mass of the plank m₂ = 162 kg

velocity of the girl with respect to surface = v₁

velocity of plank with respect to surface = v₂

v₁+ v₂ = 1.36

v₂ = 1.36 - v₁

applying conservation of momentum law to girl and plank.

m₁v₁ = m₂v₂

47.3 x v₁ = 162 x ( 1.36 - v₁ )

47.3 v₁ = 220.32 - 162v₁

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v₁ = 1.05 m /s

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Answer:

The answer is the 3rd option!

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If 5 mm of rain falls in a 100 m2 field, what volume of rain, in m3, fell in the field?
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The volume of rain that fells in the field is simply given by the area of the field, which is

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4 years ago
A nonmechanical water meter could utilize the Hall effect by applying a magnetic field across a metal pipe and measuring the Hal
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Answer:

The velocity is  v =2.455 \  m/s

Explanation:

From the question we are told that  

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    The magnetic field is  B  =  0.575 \  T

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