Homework Sheet

Name ______Period ______

CHAPTER 1 HOMEWORK SHEET 1. How many significant figures do each of the following numbers have: a. 142 b. 81.60 c. 7.63 d. 0.03 e. 0.0086 f. 3236 g. 8.70 x 103

2. Multiply 2.079 x 102m by 0.072 x 10-1, taking into account significant figures.

3. Add 7.2 x 103s + 8.3 x 104s + 0.09 x 106 s.

4. Express the following using the metric prefixes of Table 1-4: a. 106 volts b. 10-6 meters c. 5 x 103 days d. 8 x 102 bucks e. 8 x 10-9 pieces

5. Write the following as full (decimal) numbers with standard (base) SI units: a. 86.6 mm b. 35 V c. 860 mg d. 600 ps e. 12.5 fm f. 250 GV

6. Determine your height in meters.

7. The Sun, on average, is 93 Million miles from the Earth. How many meters is this? Express (a) using powers of ten, and (b) using a metric prefix. Name ______Period ______

8. Express the following sum with the correct number of significant figures: 1.00 m + 142.5 cm + 1.24x105m.

9. (a) How many seconds are there in 1.00 year? (b) How many nanoseconds are there in 1.00 year? (c) How many years are there in 1.00 second?

10. What are the area, and the approximate uncertainty, of a circle of radius 2.8 x 104 cm?

11. What is the percent uncertainty in the volume of a spherical beach ball whose radius is r = 3.86  00.08 m? (Reminder - Volume of a sphere = 4/3r3)