Period_____ Name______
Chapter 1 Homework Sheet #1
Significantly Scientific
You must always show all of your work
1. Solve the following for v (i.e. v = xy/z ).
a. s = vt
b. t =
c. a =
d.
2. Solve the equations for s
a. v2 = 2as
b. v2 = 2sd
c. s2 = 2av
Express the following numbers in scientific notation:
3. a. 5800
b. 450 000
c. 60 000
d. 86 000 000 000
4.a. 0.000 58
b. 0.000 000 45
c. 0.0036
d. 0.004
Find the value of each of the following problems (answers must use scientific notation).
5. a. (2x104)(4x108) 6. a.6x108
2x104
b. (3x104)(2x106)b.6x108 2x10-4
c. (6x10-4)(5x10-8) c.6x10-8 2x104
d. (2.5x10-7)(2.5x1016)d.6x10-8
2x10-4
Period_____ Name______
Chapter 1 Homework Sheet #2
Significantly Scientific
You must always show all your work.
1. Convert each of the following length measurements to its equivalent in meters – you must use the method used in lecture and all answers must be in scientific notation.
a. 54 inches
b. 76.2 feet
c. 2.1 miles
d. 0.123 miles
e. 1000 feet
f. 523 inches
g. 510 miles
2 Convert the following length measurements to its equivalent in meters. You must use the method used in lecture and all answers must be in scientific notation.
a. 1.1 nm
b. 76.2 pm
c. 2.1 Gm
d. 1.23 Mm
e. 110 mm
f. 52.3 km
g. 510 µm
3. Complete the conversion below. You must use the method used in lecture and all answers must include the proper units.
a. 4.3 X 10-7 m = ? nm
b. 5.57 x 10-5 m = ? µm
c. 3.34 x 10-1 m = ? cm
d. 3.34 x 10-1 m = ? mm
e. 1.6 x 105 m = ? km
f.3.82 x 108 m = ? Mm
g. 1.50 x 1011 m = ? Gm
4. (TB Ch.1 # 3 - TB stands for textbook, See questions found at the end of the chapter) What is meant by the term scientific method?
5. (TB Ch.1 # 4) Is a scientific fact something that is absolute and unchanging? Explain.
6. (TB Ch.1 # 5) Scientific theories undergo change. Is this a strength or a weakness of science? Explain.
7. (TB Ch.1 # 6) What does it mean to say that if a hypothesis is scientific, then there must be a means of proving it wrong?
8. (TB Ch.1 # 7) How do science and technology differ?
9. (TB Ch.1 # 11) Why does science tend to be a “self-correcting” way of knowing about things?
Period_____ Name______
Chapter 1 Homework Sheet #3
Significantly Scientific
Note - You must always show all your work (use the format developed in class), use significant digits and don’t forget the units.
1. Convert the following to MKS units (MKS mean that all distance units must be in meters, mass units in kilograms, time units in seconds, speed units in meters/second, etc.):
a. 45 mi/h
b. 32 ft/s
c. 120 km/h
d. 186 000 mi/s
Answer the following questions in scientific notation (use significant digits) and labeled with the proper unit.
2. An object is found to have a length of 3.44 x104 meters. Express this length in micrometers?
3. How many milligrams are there in 0.822 grams?
4. Calculate the number of kilograms in 7.66 x 105 grams?
5. How many centimeters are there in 1.733 x 105 meters (m)?
6. How many kilometers are there in 4.261 x 104 m
7. How many significant figures are there in the following numbers?
a) 2 ______e) 4.01 x 103 ______
b) 20 ______f) 4.010 x 105 ______
c) 200. ______g) 0.0001 ______
d) 200.0______h) 0.00506 ______
For each of the following, write the scale reading with your uncertainty, then the number of significant figures in the reading.
Reading SF’s
8.
9.
10.
11.
12.
13.
14.
15.
Figure 5
16. ______From figure 5 estimate the value of v when t = 0 (don’t forget the uncertainty).
17. ______From figure 5 estimate the value of t when v = 0 (don’t forget the uncertainty).
18. 114.21 x 3041 x 0.042 x 349.5 = In the left blank record the value of the indicated calculation as given by your calculator. In the right blank express the answer to the appropriate number of significant figures.
19. Tommy let a marble roll down the hill outside his house. He released it from the same place 4 times and recorded the following times. Express the average time using the correct number of significant digits.
time (s)
11.543
11.551
11.539
11.544Answer: ______
20. Express the width of the piece of paper, to the correct number of significant figures, measured with the meter stick below (don’t forget the uncertainty).
______
1
Period_____ Name______
Chapter 1 Homework Sheet #4
Significantly Scientific
You must always show all of your work
1. Solve the following for r (i.e. r = xy/z ).
a. m = rb
b. b =
c. k =
d.
2. Solve the equations for c
a. b2 = 2ac
b. b2 = 2cd
c. c2 = 2ab
3. Solve the equation for w
a. 6w+2m=p
b. = 6z
c.=
4. Solve the equation for x
a. x2+2a-5b=c2
b. =
c. =4y
Period_____ Name______
Chapter 1 Homework Sheet #5
I had a crazy dream that I weighed less than a thousandth of a gram. I was like, 0mg!
Convert from the units on the left to the units on the right. Show work for credit.
1.5.7 x 10-2 mcm
2.2.4 x 10-3 kgg
3. 3.3 x 103 mmm
4.4.7 x 10-7 gg
5.5.41 x 104 mmcm
6.1.09 x 103 kgMg
7.8.77 x 102 mgg
8.9.18 x 1010 mmkm
9.7.1 x 103 nss
10.10.5 mins
11.1.5 x 104 sdays
12.2.2 yrsmin
13.1.0 x 109 syrs
14.10.0 mkm
shr
15.15.0 cmm
mins
16. A human hair is approximately 50 μm in diameter. Express this diameter in meters.
17.A hydrogen atom has a diameter of about 10 nm.
a. Express this diameter in meters.
- Express this diameter in millimeters.
- Express this diameter in micrometers.
18. The distance between the sun and Earth is about 1.5 x 1011 m.
a. Express this distance in kilometers.
19. The average mass of an automobile in the United States is about 1.440 x 106 grams. Express this mass in kilograms.
20. The photo radar cameras on Loop 101 are set at 122 km/hr. Convert this speed to m/s. (1.000 mile = 1609m)
1. 5.7 cm 2. 2.4 g3. 3.3 m4. 0.47μg5. 5410 cm 6. 1.09 Mg
7. 8.77 x 105 μg8. 9.18 x 104 km9. 7.1 μs10. 630. s11. 0.17 days12. 1.2 x 106 min
13. 32 years14. 36.0 km/hr15. 9.00 m/s16. 5 x 10-5 m17. a. 1 x 10-8 m b. 1 x 10-5 mm
c. 1 x 10-2 μm18. a. 1.5 x 108 km 19. 1.440 x 103 kg
20. 33.9 m/s
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