Physics Unit 2

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What is the density of a material?
Substances mass per unit volume
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What is elasticity?
Solid that can regain shape after being deformed or distorted
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What is meant by tensile?
deformation that stretches
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What is meant by Compressive?
Deformation that compresses
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Why do diamonds sparkle?
Split white light into colour spectrum; high refractive index; light ray reflected many times before emerging
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Why is the core narrow in optical fibres?
Narrow to prevent multipath dispersion
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What is the cladding used for?
To prevent damage to the optical fibre and because TIR takes place at cladding boundary
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Why does refraction occur?
different speed of light in each substance
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What is Newtons fist law?
Objects either stay at rest or remain in uniform motion unless acted upon by a force
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What is Newtons 2nd law?
resultant force = mass x acceleration
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What is power?
rate of energy transfer
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What is efficiency?
amount of useful energy produced
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Other cards in this set

Card 2

Front

What is elasticity?

Back

Solid that can regain shape after being deformed or distorted

Card 3

Front

What is meant by tensile?

Back

Preview of the front of card 3

Card 4

Front

What is meant by Compressive?

Back

Preview of the front of card 4

Card 5

Front

Why do diamonds sparkle?

Back

Preview of the front of card 5
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