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GCE O level Pure Physics 6091 > 1) Physical Quantities and Units > Flashcards

1) Physical Quantities and Units Flashcards

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1
Q

All physical quantities consist of __________ and ___________.

A

magnitude and unit

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2
Q

What are the 5 base quantities?

A

mass, length, time, current, temperature

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3
Q

What is the SI unit of mass?

A

kilogram (kg)

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4
Q

What is the SI unit of length?

A

meter (m)

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5
Q

What is the SI unit of time?

A

second (s)

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6
Q

What is the SI unit of current?

A

ampere (A)

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7
Q

What is the SI unit of temperature?

A

kelvin (K)

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8
Q

What is the SI unit of speed?

A

meters per second (m/s)

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9
Q

What is the SI unit of acceleration?

A

meters per square second (m/s2)

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10
Q

What is the SI unit of density?

A

kilogram per cubic meter (kg/m3)

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11
Q

What is a scalar quantity?

A

A quantity with only magnitude.

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12
Q

What is a vector quantity?

A

A quantity with both magnitude and direction.

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13
Q

Convert 0.001 m to mm.

A

1 mm

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14
Q

Convert 300 g to kg.

A

0.3 kg

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15
Q

Convert 0.00001 m to µm.

A

10 µm

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16
Q

Convert 200 000 W to MW.

A

0.2 MW

17
Q

Convert 20 000 000 J to GJ.

A

0.02 GJ

18
Q

Give one example of a vector quantity.

A

Any of the following is correct:
velocity, acceleration, force, displacement, weight.

19
Q

Give one example of a scalar quantity.

A

Any of the following is correct:
speed, distance, time, mass, current, voltage, resistance etc.

20
Q

Read the micrometer screwgauge reading. (Include the units)

A

3.09 mm

21
Q

Read the micrometer screwgauge reading. (Include units)

A

6.84 mm

22
Q

Read the vernier caliper reading. (Include units)

A

10.02 cm

23
Q

Read the vernier caliper reading. (Include units)

A

3.36 cm

24
Q

What is the zero error?

A

-0.06 cm

25
Q

What is the zero error?

A

+0.03 cm

GCE O level Pure Physics 6091 (18 decks)

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