Physics

Question 1

All non-zero digits are significant. Therefore the number 36.9 m has _____ significant digits.

Answer 1

3 Significant digits

Question 2

Zeros between non-zero digits are significant. Therefore, the number 80,007 has _____ significant digits.

Answer 2

5 significant digits

Question 3

Zeros at the beginning of a number are not significant. Therefore the number 0.009 cm has ____ significant digits.

Answer 3

1 significant digit

Question 4

Zeros at the beginning of a number are not significant. Therefore the number 0.0503 cm has ____ significant digits

Answer 4

3 significant digits

Question 5

Zeros at the end of a number after a decimal point are significant. Therefore the number 73.80 cm has ____ significant digits

Answer 5

4 significant digits

Question 6

Zeros at the end of a number without an explicit decimal point are not significant. Therefore the number 850 km has ____ significant digits

Answer 6

2 significant digits

Question 7

Exact numbers have ________ significant digits. This would include objects that can be counted and conversion factors.

Answer 7

infinite

Question 8

What is the rule for adding and subtracting with significant figures?

Answer 8

The answer should have the same number of decimal places as the number with the least decimal places.

Question 9

What is the rule for multiplying and dividing with significant figures?

Answer 9

When multiplying/dividing the answer should have the same number of significant figures as the number with the least number of significant figures.

Question 10

What is the sum of: 2.67 cm + 17.4 cm with the correct number of significant figures?

Answer 10

20.07 = 20.1 cm

Question 11

What is the sum of: 1.21 cm + 4.11cm + 3.3 cm with the correct number of significant figures?

Answer 11

8.62 = 8.6 cm

Question 12

Find the difference: 534.750 m - 217.4 m with the correct number of significant figures?

Answer 12

317.350 m = 317.4 m

Question 13

What is the product of: 1002.4 cm x 1.7 cm with the correct number of significant figures?

Answer 13

1.7 x 10^3 cm

Question 14

How many significant digits are in the number 40,020 m?

Answer 14

4

Question 15

How many significant digits are in the number 730.7 cm?

Answer 15

4

Question 16

How many significant digits are in the number 0.0620?

Answer 16

3

Question 17

What number is represented by:
3.6 x 10^3?

Answer 17

3600

Question 18

What number is represented by:
8.3 x 10^4?

Answer 18

83000

Question 19

Convert 62,000 to scientific notation

Answer 19

6.2 x 10^4

Question 20

What number is represented by:
3.6 x 10^-3?

Answer 20

0.0036

Question 21

Convert 0.00019 to scientific notation.

Answer 21

1.9 x 10^-4

Question 22

What is Distance?

Answer 22

The total length of a path travelled

Question 23

What is Displacement?

Answer 23

Change in position. Length of the line between starting position & final position

Question 24

What is Scalar?

Answer 24

A quantity that includes a Magnitude (size) & Unit

Question 25

What is Vector?

Answer 25

A quantity that includes a Magnitude (size) & Direction