Unit A

Question 1

SI Units Length, Mass, Time

Answer 1

Length: Meter
Mass: kg
Time: seconds

Question 2

CGS Units- length, mass time

Answer 2

Length: cm
mass: gram
time: seconds

Question 3

British engineering units- length, mass, time

Answer 3

length: foot
mass: slug
time: seconds

Question 4

tera (T)

Answer 4

10^12

Question 5

Giga (G)

Answer 5

10^9

Question 6

Mega (M)

Answer 6

10^6

Question 7

Kilo (k)

Answer 7

10^3

Question 8

centi (c)

Answer 8

10^-2

Question 9

milli (m)

Answer 9

10^-3

Question 10

micro(u)

Answer 10

10^-6

Question 11

nano(n)

Answer 11

10^-9

Question 12

pico(p)

Answer 12

10^-12

Question 13

4 quarts- gallon

Answer 13

1 gallon

Question 14

5280 feet= mile

Answer 14

1 mile

Question 15

2000 pounds- ton

Answer 15

1 ton

Question 16

how many weeks in a year

Answer 16

52

Question 17

Accuracy

Answer 17

degree of closeness of a measured value to it’s true value

Question 18

precision

Answer 18

how close a date set is to one another

Question 19

Precision of a measurement through significant figures

Answer 19

smallest division + a decimal place
spring scale- tens place

Question 20

Scalar quantity

Answer 20

measurements with magnitude (number but not direction

Question 21

Tail to Head method

Answer 21

tail of the second vector to the head of the previous vector
R= tail to first vector to head of last vector

Question 22

what is Ax when the vector is due east or west

Answer 22

cos

Question 23

what is Ay when the vector is due east or west

Answer 23

sin

Question 24

what is Ax when the vector is due north or south

Answer 24

sin

Question 25

what is Ay when the vector is due north or south

Answer 25

cos