Question

1A: **How long is a wavelength of infrasound with a
frequency of 2 Hz?**

_________m

1B: **What frequency would you need to produce a sound
wave in room-temperature air with a wavelength of 7
m?**

__________Hz

1C: **Radio waves travel at the speed of light, which is
3.00 ? 10 ^{8} m/s. What is the wavelength for a FM station
broadcasting at 102.1 MHz (the prefix M is "mega" and means
10^{6})?**

__________m

1D: **The musical note "middle C" has a frequency of
262Hz. What is its period of vibration?**

__________s

1E: **A racecar moves around a circular track an average
of once every 2 minutes and 42 seconds. What is the frequency of
the motion?**

__________Hz

Answer #1

An FM radio station broadcasts electromagnetic radiation at a
frequency of 101.7 MHz. The wavelength of this radiation is
________ m.

1. Microwave radiation has wavelengths from 1.0×10-3 to 1.0 m,
whereas the wavelength region for infrared radiation is 1.0×10-6 to
1.0×10-3 m. We can say that: (higher than, lower than, or the
same)
1. The frequency of microwave radiation is infrared
radiation.
2. The speed of microwave radiation is infrared radiation.
2.Infrared radiation has frequencies from 3.0×1011 to 3.0×1014
Hz, whereas the frequency region for microwave radiation is 3.0×108
to 3.0×1011 Hz. (higher than, lower than, or the same) We...

1.The wavelength of a particular color of red
light is 665 nm.
The energy of this wavelength of light is kJ/photon.
(109 nm = 1 m)
2. A local FM radio station broadcasts at an energy of
6.15×10-29 kJ/photon.
Calculate the frequency at which it is broadcasting.
Frequency = MHz
(1 MHz = 106 sec -1)
3. A local AM radio station broadcasts at a frequency of
712 KHz.
Calculate the energy of the frequency at which it is
broadcasting....

FM radio station KRTH in Los Angeles broadcasts on an assigned
frequency of 101 MHz with a power of 50,000 W.
(a) What is the wavelength of the radio waves produced by this
station?
(b) Estimate the average intensity of the wave at a distance of
44.4 km from the radio transmitting antenna. Assume for the purpose
of this estimate that the antenna radiates equally in all
directions, so that the intensity is constant over a hemisphere
centered on the...

1A) Calculate the velocity of a wave that has a
frequency of 4.6 MHz and a wavelength of 650 nm.
a) 2x106 m/s
b) 2.99 m/s
c) 3x108 m/s
d) 4.6x107 m/s
1B) At what temperature is most matter ionized into a
plasma?
a) 4500 degrees C
b) 100,000 degrees C
c) 13,000 degrees C
d) 6000 degrees C
1C) A physics instructor is trapped in the arctic (-40
degrees C). He has an inside temperature of 33 degrees C,...

What
is the wavelength used by a radio station that broadcasts at a
frequency of 920 kHz? (c = 3.00 × 108 m/s) when water has an index
refraction of 1.33

1a. Derive a formula for the wavelength of a standing wave on a
fixed string at both ends in terms of the number of antinodes, n,
and the length of the string.
1b. For an aluminum rod, when a wave is set up in the rod, do
you expect the ends of the rod to allow vibrations or not? Are they
considered open or closed for displacement?
1c. Draw schematic pictures of the two longest wavelengths that
could fit on...

(1A) A vertical spring with a spring constant of 8 N/m and
damping constant of 0.05 kg/s has a 2 kg mass suspended from it. A
harmonic driving force given by F = 2 cos(1.5 t ) is applied to the
mass. What is the natural angular frequency of oscillation of the
mass? What is the amplitude of the oscillations at steady state?
Does this amplitude decrease with time due to the damping? Why or
why not?
(1B) Two traveling...

1a) How many mL of (7.03x10^-1) M HCOOH would it take
to reach the equivalence point in the titration of (4.200x10^1) mL
of (4.070x10^-1) M KOH?
1b)What is the pH at exactly 1/2 of the volume
required to reach the equivalence point in the titration of
(4.810x10^1) mL of (4.050x10^-1) M HCNwith (6.87x10^-1) M
KOH?
1c)What is the pH at 0.00 mL of titrant in the titration of 50.00
mL of 0.400 M B (a generic base with Kb =...

chapter 24 part 2
1. What is the frequency of a 17.7 m wavelength radio
wave? Give your answe in MHz.
2. A 2.34 m diameter university communications
satellite dish receives TV signals that have a maximum electric
field strength (for one channel) of 7.51 μV/m. What is the power
received by the dish in 10-13 W?
3. A radio antenna can pick up wavelengths between 2.6
μm and 57.2 μm. How much of the frequency spectrum in (in
1013 Hz) does...

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