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

Force

kgms-2

2

Work done

kgm2s-2

3

Power (derived units)

Kgm2s-3

4

Voltage (derived units)

Kgm2s-3A-1

5

Resistance (derived units)

Kgm2s-3A-2

6

Pressure (derived units)

Kgm-1s-2

7

Resistivity

Kgm3s-3A-2

8

Tera standard form

12

9

Giga standard form

9

10

Mega standard form

6

11

Kilo standard form

3

12

Centi standard form

-2

13

Milli standard form

-3

14

Micro standard form

-6

15

Nano standard form

-9

16

Pico standard form

-12

17

Define accuracy.

How close the mean value is to the true value.

18

Define precision.

How close together the repeat values are.

19

What is resolution?

The smallest change it can read.

20

What is homogeneous?

Same for each quantity in equation

21

Estimate of power used by one person in a day

1 kW

22

Estimate power of toaster

1200W

23

Estimate power of microwave

1500W

24

Estimate power of air conditioner

5000 W

25

Estimate power of oven

3000W