1.
The standard of length is based on:
A.
the distance from the north pole to the equator along a meridian passing through Paris
B.
wavelength of light emitted by Hg
198
C.
wavelength of light emitted by Kr
86
D.
a precision meter stick in Paris
E.
the speed of light
2.
The SI base unit for mass is:
A.
gram
B.
pound
C.
kilogram
D.
ounce
E.
kilopound
3.
5.0 X 10
4
X 3.0 X 10
–
6
=
A.
1.5 X 10
–
3
B.
1.5 X 10
–
1
C.
1.5 X 10
1
D.
1.5 X 10
3
E.
1.5 X 10
5
4.
The number of significant figures in 0.00150 is:
A.
2
B.
3
C.
4
D.
5
E.
6
5.
3.2 X 2.7 =
A.
9
B.
8
C.
8.6
D.
8.64
E.
8.640
6.
During a short interval of time the velocity
v
in m/s of an automobile is given by
v
=
at
2
+
bt
3
, where the time
t
is in seconds. The units of
a
and
b
are respectively:
A.
m
×
s
2
; m
×
s
4
B.
s
3
/m; s
4
/m
C.
m/s
2
; m/s
3
D.
m/s
3
; m/s
4
E.
m/s
4
; m/s
5
7.
Suppose
A
=
B
n
C
m
, where
A
has dimensions LT,
B
has dimensions L
2
T
–
1
, and
C
has dimensions LT
2
. Then the exponents
n
and
m
have the values:
A.
2/3; 1/3
B.
2; 3
C.
4/5; –1/5
D.
1/5; 3/5
E.
1/2; 1/2
8.
A gram is:
A.
10
–
6
kg
B.
10
–
3
kg
C.
1 kg
D.
10
3
kg
E.
10
6
kg
9.
Which of the following is closest to your mass?
A.
0.06 kg
B.
0.6 kg
C.
6 kg
D.
60 kg
E.
600 kg
10.
The number of significant figures in 15.0 is:
A.
1
B.
2
C.
3
D.
4
E.
5
11.
A sphere with a radius of 1.7 cm has a volume of:
A.
2.1 X 10
–
5
m
3
B.
9.1 X 10
–
4
m
3
C.
3.6 X 10
–
3
m
3
D.
0.11 m
3
E.
21 m
3
12.
Suppose
A
=
BC
, where
A
has the dimensions L/M and
C
has the dimensions L/T. Then
B
has dimension:
A.
T/M
B.
L
2
/TM
C.
TM/L
2
D.
L
2
T/M
E.
M/L
2
T
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