When three vectors are added graphically and form a closed triangle, the largest enclosed angle
between any two of the vectors cannot be greater than
60°.
90°.
180°.
No maximum exists. - ANS_180
A circle has an area of 3.0 m2. A second circle has double the radius of the first. The area of the second
circle is ____ times that of the first.
0.8
2.0
4.0
6.0 - ANS_4.0
Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth
of a millimeter digit. If you are measuring an object with length between 6 and 7 cm, how many
significant figures will result if you only use the part of the meter stick between the 1-cm and 9-cm
positions?
2
3
4
5
more than 5 - ANS_3
, Which formula is dimensionally consistent with an expression yielding a value for velocity? (a is
acceleration, x is distance, and t is time)
v/t2
vx2
v2/t
at - ANS_at
When we subtract a velocity vector from another velocity vector, the result is
another velocity.
an acceleration.
a displacement.
a scalar. - ANS_Another velocity
Approximately how many water molecules are in a lake with a volume of 12 100 km3? A water molecule
measures approximately 2.75 × 10¯10 m in length.
2E+15
5E+22
4E+14
6E+41 - ANS_6E+41
Multiplying a 2-significant-figure number by a 4-significant-figure number and then dividing the product
by a seven-significant-figure number yields a number with how many significant figures?
6/7
1
2
13
between any two of the vectors cannot be greater than
60°.
90°.
180°.
No maximum exists. - ANS_180
A circle has an area of 3.0 m2. A second circle has double the radius of the first. The area of the second
circle is ____ times that of the first.
0.8
2.0
4.0
6.0 - ANS_4.0
Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth
of a millimeter digit. If you are measuring an object with length between 6 and 7 cm, how many
significant figures will result if you only use the part of the meter stick between the 1-cm and 9-cm
positions?
2
3
4
5
more than 5 - ANS_3
, Which formula is dimensionally consistent with an expression yielding a value for velocity? (a is
acceleration, x is distance, and t is time)
v/t2
vx2
v2/t
at - ANS_at
When we subtract a velocity vector from another velocity vector, the result is
another velocity.
an acceleration.
a displacement.
a scalar. - ANS_Another velocity
Approximately how many water molecules are in a lake with a volume of 12 100 km3? A water molecule
measures approximately 2.75 × 10¯10 m in length.
2E+15
5E+22
4E+14
6E+41 - ANS_6E+41
Multiplying a 2-significant-figure number by a 4-significant-figure number and then dividing the product
by a seven-significant-figure number yields a number with how many significant figures?
6/7
1
2
13
