Topic 1 - Physical Quantities and Units Flashcards
1
Q
Mass of an apple
A
50-500g
2
Q
Pressure due to depth of 10m of water
A
5x10^4 - 5 x 10^5 Pa
3
Q
Density of gas
A
0.5 - 0.7 kgm^-3
4
Q
Density of oil
A
700 - 900 kg m^-3
5
Q
Density of water
A
1000 kg m^-3
6
Q
Number of joules of energy in 1 kwh
A
(3-4) x 10^6 J
1000 W x 60 x 60
7
Q
Frequency of audible sound
A
20 - 20k Hz
8
Q
Thickness of a sheet of paper
A
0.05 - 0.15 mm
9
Q
Human reaction time
A
0.1 - 0.2 s
10
Q
Speed of sound in air
A
300 - 330 ms^-1
