2.1 Physical Quantities, Units and Measurements Flashcards Preview

Physics AS Rafa > 2.1 Physical Quantities, Units and Measurements > Flashcards

Flashcards in 2.1 Physical Quantities, Units and Measurements Deck (25)
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1
Q

Force

A

kgms-2

2
Q

Work done

A

kgm2s-2

3
Q

Power (derived units)

A

Kgm2s-3

4
Q

Voltage (derived units)

A

Kgm2s-3A-1

5
Q

Resistance (derived units)

A

Kgm2s-3A-2

6
Q

Pressure (derived units)

A

Kgm-1s-2

7
Q

Resistivity

A

Kgm3s-3A-2

8
Q

Tera standard form

A

12

9
Q

Giga standard form

A

9

10
Q

Mega standard form

A

6

11
Q

Kilo standard form

A

3

12
Q

Centi standard form

A

-2

13
Q

Milli standard form

A

-3

14
Q

Micro standard form

A

-6

15
Q

Nano standard form

A

-9

16
Q

Pico standard form

A

-12

17
Q

Define accuracy.

A

How close the mean value is to the true value.

18
Q

Define precision.

A

How close together the repeat values are.

19
Q

What is resolution?

A

The smallest change it can read.

20
Q

What is homogeneous?

A

Same for each quantity in equation

21
Q

Estimate of power used by one person in a day

A

1 kW

22
Q

Estimate power of toaster

A

1200W

23
Q

Estimate power of microwave

A

1500W

24
Q

Estimate power of air conditioner

A

5000 W

25
Q

Estimate power of oven

A

3000W