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Physics > 1 .Working As A Physicst > Flashcards

1 .Working As A Physicst Flashcards

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1
Q

What does SI stand for

A

Standard international

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2
Q

Give unit and Symbol for Length

A

Metre m

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3
Q

Give unit and symbol for mass

A

Kilogram kg

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4
Q

Give unit and symbol of time

A

Seconds s

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5
Q

Give unit and symbol for electric current

A

Ampere A

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6
Q

Give unit and symbol for thermodynamic temperature

A

Kelvin K

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7
Q

Give unite and symbol for amount of a substance

A

Mole mol

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8
Q

Give unit and symbol for luminous intensity

A

Candela cd

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9
Q

What is absolute zero in kelvin

A

0k

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10
Q

Derived Units are combinations of what

A

Base units

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11
Q

Definition of error

A

Measure of how far away from the true value a reading is.

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12
Q

Definition of random error

A

Measurements vary to unpredictable circumstances.They can’t be corrected.

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13
Q

Definition of precision

A

How close measurements are to each other and the mean.

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14
Q

Definition of accuracy

A

How close a measurement is to the true value.

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15
Q

Definition of repeatable

A

The original experimenter repeats the investigation using same equipment and method to get same results.

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16
Q

Definition of valid

A

Your results give you information about what you set to investigate.

17
Q

Definition of Resolution

A

Smallest change in a quantity being measured that gives a perceptible change in the reading

18
Q

How long is human reaction time

A

0.2s

19
Q

Derived units for velocity

A

M/s or ms^-1

20
Q

Derived units for acceleration

A

Ms^-2

21
Q

Derived units for work done(same as joule)

A

Kgm^2/s^2

22
Q

Derived units for force

A

Kgms^-2

23
Q

Derived units for power

A

Kg m^2 s^-2

24
Q

Derived units for frequency

A

S^-1

25
Q

Derived units for charge

A

As

26
Q

Derived units for voltage

A

Kg m^2 s^-3 A^-2

Physics (8 decks)

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