Question

S AND MEASUREMENT
EXERCISES
Note : In stating numerical answers, take care of significant figures.
2.1 Fill in the blanks
(a) The volume of a cube of side 1 cm is equal to .....m
(b) The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm is equal to
...(mm)
(c) A vehicle moving with a speed of 18 km h-covers....m in ls
(d) The relative density of lead is 11.3. Its density is ....g cm or ....kg mº
2.2 Fill in the blanks by suitable conversion of units
(a) 1 kg mº sº = ....gems
(b) 1 m = ..... 4
(c) 3.0 m s = .... km h 2
(d) G= 6.67 x 10-1 Nm (kg) = .... (cm) s g.
2.3 A calorie is a unit of heat (energy in transit) and it equals about 4.2 J where IJ =
1 kg ms. Suppose we employ a system of units in which the unit of mass equals a
kg, the unit of length equals ßm, the unit of time is ys. Show that a calorie has a
magnitude 4.2 -12 ya in terms of the new units.​

Answer 1

Answer:

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