Express 0.084 as powers of ten with one figure before the decimal point .
8.4 Χ 102
8.4 Χ 103
8.4 Χ 10-2
8.4 Χ 10-3
How many millimeter are there in 0.5 cm ?
5 mm
0.005 mm
50 mm
0.05 mm
The force needed to cause unit extension ie , 1 m is called
Extension
Stretching force
Force constant
Stretching
What is the mass of 5 m3 of cement of density 3000 kg / m3 ?
150 kg
1500 kg
15000 kg
15 kg
Magnetic force is an example of
Contact force
Action-at-a-distance force
Gravitational force
Mass per unit volume of a substance is called
Work
Weight
Density
Write as power of ten ;
7 Χ 10-5
7 Χ 10-6
7 Χ 105
7 Χ 106
The S.I. unit of length is
Km (Kilometre )
m ( metre )
cm ( cent i metre)
mm ( milli metre)
The simplest type enables a length to be measured to 0.01 cm is
Common meter scale
Micro meter screw gauge
Vernier scale
Simple pendulum
What is the force constant of a spring which is stretched 2mm by a force of 4N?
2 Χ 10-3
2 Χ 103
4 Χ 10-3
4 Χ 103