The siren of a fire engine is heard when the fire engine is traveling in three different situations: A, toward the listener at 30 km / h ; B, toward the listener at 50 km / h ; and C, away from the listener at 20 km / h . Rank the pitches heard, from highest to lowest
The siren of a fire engine is heard when the fire engine is traveling in three different situations: A, toward the listener at 30 km / h ; B, toward the listener at 50 km / h ; and C, away from the listener at 20 km / h . Rank the pitches heard, from highest to lowest
The siren of a fire engine is heard when the fire engine is traveling in three different situations: A, toward the listener at
30
km
/
h
; B, toward the listener at
50
km
/
h
; and C, away from the listener at
20
km
/
h
. Rank the pitches heard, from highest to lowest
Rank the six combinations of electric charges on the basis of the electric force acting on 91. Define forces pointing to the right as positive and forces pointing to the left as negative.
Rank in increasing order by placing the most negative on the left and the most positive on the right. To rank items as equivalent, overlap them.
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[most negative
91 = +1nC
92 = +1nC
91 = -1nC
93 = +1nC
92- +1nC
93 = +1nC
-1nC
92- -1nC
93- -1nC
91= +1nC
92 = +1nC
93=-1nC
91
+1nC
92=-1nC
93=-1nC
91 = +1nC
2 = −1nC
93 = +1nC
The correct ranking cannot be determined.
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most positive
Part A
Find the x-component of the electric field at the origin, point O.
Express your answer in newtons per coulomb to three significant figures, keeping in mind that an x component that points to the right is positive.
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Eoz =
Η ΑΣΦ
?
N/C
Submit
Part B
Now, assume that charge q2 is negative; q2 = -6 nC, as shown in (Figure 2). What is the x-component of the net electric field at the origin, point O?
Express your answer in newtons per coulomb to three significant figures, keeping in mind that an x component that points to the right is positive.
▸ View Available Hint(s)
Eoz=
Η ΑΣΦ
?
N/C
1. A charge of -25 μC is distributed uniformly throughout a spherical volume of radius 11.5 cm.
Determine the electric field due to this charge at a distance of (a) 2 cm, (b) 4.6 cm, and (c) 25 cm from
the center of the sphere.
(a) =
=
(b) E =
(c)Ẻ =
=
NC NC NC
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