Physical Quantities, Units & Measurement
QUESTIONS
1 Name the base quantities and identify their Sl units. What are the
convenient ways of writing very large and very small quantities?
2 Rewrite the following quantities using suitable prefixes.
(a) 5 000 000 J
(d) 485 000 N
(e) 0.000 007 m
(b) 48 000 g
(c) 0.0009 s
3 Rewrite the following
(a) 760 mm in m
(b)
4.5 us in s
7.2 km in mm
(c) 3.2 x 10¹ m in km
2.5 ms in us
How many bytes of memory space are there in an 80 GB hard disk?
measurements in the units suggested.
(d)
10-¹ cm in mm
(e)
(f)question 2