S.I. units and prefixes

Question 1

what is giga, G

Answer 1

x10^9
billion

Question 2

what is mega, M

Answer 2

x10^6
million

Question 3

what is kilo k

Answer 3

x10^3
thousand

Question 4

what is deci d

Answer 4

x10^ -1
tenth

Question 5

what is micro (mu)

Answer 5

x10^-6
millionth

Question 6

what is nano, n

Answer 6

x10^-9
billionth

Question 7

what is tera, T

Answer 7

10^12
trillion

Question 8

what is pico, p

Answer 8

10^ -12
trillionth

Question 9

what is femto, f

Answer 9

10^ -15
quadrillionth

Question 10

what is milli, m

Answer 10

10^ -3
thousandth

Question 11

what are SI units

Answer 11

fundamental units of physical quantities

Question 12

what 1 eV in J

Answer 12

1eV = 1.6x10^-19 J

Question 13

what is a random error?

Answer 13

an error that affects precision and cannot be completelt removed, it causes differences in measurements

Question 14

what is a systematic error

Answer 14

an error that affects accuracy and occurs due to faults in equipment or experimental method,
causing the result to be too large/small by the same amount eactime

Question 15

3 ways to reduce random error

Answer 15

take at least 3 repeats and find mean
use computer or data loger
use higher resolutioon equiptment

Question 16

what is a casue of parallax error

Answer 16

reading ascale at a differetm angle each time
to correct this you should red scales at eye level

Question 17

what is estimation?

Answer 17

a skill physicists must use in order to approximate the values of physical quantities in order to make comparisons, or to check if a vale they’ve calculated is reasonable

Question 18

what is the nearest order of magnitude of 8.8x10^-21

Answer 18

10^-20

Question 19

how many error bars should a line of best fit go through

Answer 19

all of them

Question 20

what are the fundamental units?

Answer 20

kg, m, s, mol, K, A