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Physics > Measurements & Their Errors > Flashcards

Measurements & Their Errors Flashcards

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1
Q

What is the SI Unit for Time?

A

Seconds (s)

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2
Q

What is the SI Unit for Electricity?

A

Amperes (A)

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3
Q

What is the SI Unit for Length?

A

Metres (m)

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4
Q

What is the SI Unit for Amount of Substance?

A

Moles (mol)

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5
Q

What is the SI Unit for Luminous Intensity?

A

Candela (cd)

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6
Q

What is the SI Unit for Temperature?

A

Kelvin (K) - 1 Degree Celsius = 274.15K

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7
Q

What is the SI Unit for Mass?

A

Kilograms (kg)

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8
Q

What is the Derived Unit of Force

A

kgms^-2

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9
Q

What is the prefix for Tera (T)

A

10^12

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10
Q

What is the prefix for Giga (G)

A

10^9

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11
Q

What is the prefix for Mega (M)

A

10^6

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12
Q

What is the prefix for Kilo (K)

A

10^3

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13
Q

What is the prefix for Centi (c)

A

10^-2

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14
Q

What is the prefix for Micro (µ)

A

10^-6

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15
Q

What is the prefix for Nano (n)

A

10^-9

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16
Q

What is the prefix for Pico (p)

A

10^-12

17
Q

What is the prefix for Femto (f)

A

10^-15

18
Q

Define Precision

A

Precise measurements are ones in which there is very little spread about the mean
value.

19
Q

Define Repeatability

A

A measurement is repeatable if the original experimenter repeats the investigation using same method and equipment and obtains the same results.

20
Q

Define Reproducibility

A

A measurement is reproducible if the investigation is repeated by another person, or by using different equipment or techniques, and the same results are obtained.

21
Q

Define Resolution

A

This is the smallest change in the quantity being measured (input) of a measuring instrument that gives a perceptible change in the reading.

22
Q

Define Accuracy

A

A measurement result is considered accurate if it is judged to be close to the true value.

Physics (8 decks)

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