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Evgesh-ka [11]
2 years ago
15

In the design of an optical fibre, what

Physics
2 answers:
MakcuM [25]2 years ago
7 0

Answer:

silica glass

Explanation:

denpristay [2]2 years ago
4 0

Hey there! I'll try to provide you with my best answer.

Answer: pure glass (SiO2), plastic, or a combination of both is most suitable for the  design of the core. Even so in cladding. The use of one or the other material will be determined by such factors as quality and economics.

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57. Estimate Potential Energy A boulder with a
Oksanka [162]

Answer: 4.9 x 10^6 joules

Explanation:

Given that:

mass of boulder (m) = 2,500 kg

Height of ledge above canyon floor (h) = 200 m

Gravita-tional potential energy of the boulder (GPE) = ?

Since potential energy is the energy possessed by a body at rest, and it depends on the mass of the object (m), gravitational acceleration (g), and height (h).

GPE = mgh

GPE = 2500kg x 9.8m/s2 x 200m

GPE = 4900000J

Place result in standard form

GPE = 4.9 x 10^6J

Thus, the gravita-tional potential energy of the boulder-Earth system relative to the canyon floor is 4.9 x 10^6 joules

3 0
3 years ago
What is the momentum of an 80 kg runner moving at the speed of 2.5 m/s? Use the
Vladimir79 [104]

Answer:

200 kgm/s

Explanation:

momentum = mass x velocity

8 0
2 years ago
If all of the forces acting on an object balance so that the net force is zero, then
nadya68 [22]
The answer is (A) the object must be at rest.

When all of the forces acting on an object balance, the net force is zero and hence the object will not move.

Yes, the direction might also change under some special circumstances. 
6 0
3 years ago
The mini-refrigerator fire was most likely caused by what type of wiring?
Nimfa-mama [501]

Answer: The copper wiring most likely caused the mini-refrigerator fire.

Explanation: A mini-refrigerator may have one or more evaporator fan motors. These motors have copper wiring. In some situation these copper wires gets overheated. It may result to the firing of the mini-refrigerator.

Therefore, the mini-refrigerator fire was most likely caused by copper wiring.

7 0
3 years ago
Box A has two moles of gas at a temperature of 400 K. Box B has one mole of gas at a temperature of 800 K. Which of the two gas
mina [271]
B I think if not sorry
8 0
3 years ago
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