burgin (lcb626) – HW01 – markert – (56480)
1
This
printout
should
have
21
questions.
Multiplechoice questions may continue on
the next column or page – find all choices
before answering.
001
(part 1 of 4) 10.0 points
How many significant figures are in 65
.
8
±
0
.
2
m?
1.
5
2.
1
3.
2
4.
3
correct
5.
4
6.
None of these
7.
6
Explanation:
Addition or subtraction of values measured
in tenths of a meter are to be rounded to the
nearest tenth of a meter.
002
(part 2 of 4) 10.0 points
How many significant figures are in 2
.
567
×
10
18
s?
1.
3
2.
1
3.
5
4.
4
correct
5.
2
6.
None of these
7.
6
Explanation:
Every digit in scientific notation is signifi
cant.
003
(part 3 of 4) 10.0 points
How many significant figures are in 2
.
43
×
10
10
kg?
1.
6
2.
5
3.
3
correct
4.
2
5.
4
6.
1
7.
None of these
Explanation:
Every digit in scientific notation is signifi
cant.
004
(part 4 of 4) 10.0 points
How many significant figures are in 0
.
0059
mm?
1.
1
2.
2
correct
3.
3
4.
5
5.
4
6.
None of these
7.
6
Explanation:
The first nonzero digit is the first signifi
cant digit.
005
10.0 points
Convert an acceleration of 3
.
1 mi
/
h
/
s to m
/
s
2
.
Correct answer: 1
.
38553 m
/
s
2
.
Explanation:
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
burgin (lcb626) – HW01 – markert – (56480)
2
Let :
a
= 3
.
1 mi
/
h
/
s
.
a
=
3
.
1 mi
h
·
s
·
1
.
609 km
1 mi
·
1000 m
1 km
·
1 h
3600 s
=
1
.
38553 m
/
s
2
.
006
(part 1 of 2) 10.0 points
The elevators in the John Hancock building
in Chicago move 678 ft in 36 s.
What is their speed?
Correct answer: 5
.
7404 m
/
s.
Explanation:
v
=
678 ft
36 s
parenleftbigg
12 in
1 ft
parenrightbiggparenleftbigg
2
.
54 cm
1 in
parenrightbigg
×
parenleftbigg
1 m
100 cm
parenrightbigg
=
5
.
7404 m
/
s
.
This is the end of the preview.
Sign up
to
access the rest of the document.
 Fall '08
 Swinney
 Acceleration, Velocity, Correct Answer, Orders of magnitude, Miles per hour

Click to edit the document details