Two speakers that are 10.0 m apart produce in-phase sound waves of frequency 170.0 Hz in a room where the speed of sound is 340.0 m/s. A microphone is placed midway between the speakers. (a) What is the wavelength of the sound waves? (b) Does the microphone detect a minimum or a maximum sound intensity at the midpoint? (c) What does the microphone detect if it is moved 0.5 m to the right of the midpoint? (d) What does it detect if it is moved 1 m to the left of the midpoint?
Two speakers that are 10.0 m apart produce in-phase sound waves of frequency 170.0 Hz in a room where the speed of sound is 340.0 m/s. A microphone is placed midway between the speakers. (a) What is the wavelength of the sound waves? (b) Does the microphone detect a minimum or a maximum sound intensity at the midpoint? (c) What does the microphone detect if it is moved 0.5 m to the right of the midpoint? (d) What does it detect if it is moved 1 m to the left of the midpoint?
Two speakers that are 10.0 m apart produce in-phase sound waves of frequency 170.0 Hz in a room where the speed of sound is 340.0 m/s. A microphone is placed midway between the speakers. (a) What is the wavelength of the sound waves? (b) Does the microphone detect a minimum or a maximum sound intensity at the midpoint? (c) What does the microphone detect if it is moved 0.5 m to the right of the midpoint? (d) What does it detect if it is moved 1 m to the left of the midpoint?
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
1.
A long silver rod of radius 3.5 cm has a charge of -3.9
ис
on its surface. Here ŕ is a unit vector
ст
directed perpendicularly away from the axis of the rod as shown in the figure.
(a) Find the electric field at a point 5 cm from the center of the rod (an outside point).
E =
N
C
(b) Find the electric field at a point 1.8 cm from the center of the rod (an inside point)
E=0
Think & Prepare
N
C
1. Is there a symmetry in the charge distribution? What kind of symmetry?
2. The problem gives the charge per unit length 1. How do you figure out the surface charge density σ
from a?
1. Determine the electric flux through each surface whose cross-section is shown below.
55
S₂
-29
S5
SA
S3
+ 9
Enter your answer in terms of q and ε
Φ
(a) s₁
(b) s₂
=
-29
(C) Φ
զ
Ερ
(d) SA
=
(e) $5
(f) Sa
$6
=
II
✓
-29
S6
+39
Chapter 26 Solutions
College Physics Volume 1 (Chs. 1-16); Mastering Physics with Pearson eText -- ValuePack Access Card -- for College Physics (10th Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
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