physical quantities to memorize

Height of human adult

1 - 2 m

Thickness of paper

0.1 mm

Mass of adult

70 kg

Room temp

20 deg. C

Mass of apple

~300 g

Mass of:

• Pen

• Protractor

• 30 cm ruler

• 1 Litre of water

• Cellphone

• Scientific calculator

• 15 g

• 10 g

• 50 g

• 1 kg

• 100 g

• 100 g

Mass of car

2000 kg

Diameter of atom

10^-10 m

Wavelength UV light

10 nm (x10^-9)

Distance between earth and sun

1.5 ×10^11 m

Seconds in a day

90,000 s

Power of a light bulb

60 W

Atmospheric pressure

10^5 Pa

Mass of hydrogen atom

10^-27 kg

Speed of sound in

• air

• water

• metals

• 340 m/s

• 1500 m/s

• 5000 m/s

Density of

• air

• water

• oil

• mercury

• 10 kg/m3

• 1000 kg/m3

• 800 kg/m3

• 13600 kg/m3

Diameter and mass of human hair

0.1 mm, 0.3 mg

Typical volume in cm3 of human head

2500 cm3

speed of athlete in 100 m + avg Ke

10 m/s, 4000J

green light wavelength

500 nm