chap 1 physical quantities, units and measurements

Cards (23)

what is tera ?
10 ^ 12
what is giga ?
10 ^ 9
what is mega ?
10 ^ 6
what is kilo ?
10 ^ 3
what it deci ?
10 ^ -1
what is centi ?
10 ^ -2
what is milli ?
10 ^ -3
what is micro ?
10 ^ -6
what is nano ?
10 ^ -9
what is the accuracy of measuring tape ?
0.1 cm
what is the accuracy of metre rule ?
0.1 cm
what is the accuracy of digital calipers ?
0.001 cm
what is the accuracy of digital micrometer screw gauge ?
0.0001 cm
why do we usually tale readings on stopwatches to the nearest one decimal place ?
to account for human reaction time that may occur
what are scalar quantities ?
physical quantities that have only magnitude
what are vector quantities ?
physical quantities that have both magnitude and direction
what is the radius of a proton ?
10 ^ -15 m
what is the radius of an atom ?
10 ^ -10 m
what is the average width of a strand of hair ?
10 ^ -4 m
what is the height of a human ?
10 ^ 0 m
what is the height of mount everest ?
10 ^ 4 m
what is the radius of the earth ?
10 ^ 7 m
what is the radius of the sun ?
10 ^ 9 m