The Dopplershift ofultrasonic waves can measure the speed of blood in anartery. If thefrequency of the stationary source is 100 kHz andthe reflectedsound has a Doppler shift of 200 Hz, what is theblood flow speed?(The speed of sound inside the body is 1 500m/s.)

a. 1.0 m/s

b. 1.5 m/s

c. 2.2 m/s

d. 3.3 m/s

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Nestor RutherfordLv2

20 Jun 2019

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Physics Help.Please someone help me!!?

Physics Help.Please someone help me!!?
***Assume that the speed of sound in air is 343 m/s, at 20C,UNLESSOTHERWISE NOTED.***

1.While fishing from a boat anchored offshore, you seeanotherfishing boat between your boat and the shore. The other boatsoundsa 510 Hz horn as it heads toward the shore at a speed of 18m/s
a) If your fishing boat is stationary, what is the frequency ofthesound waves from the horn that reach you?
b) If your fishing boat now heads out to sea at a speed of 15m/s,what is the frequency of the sound waves from the horn thatreachyou?

2. A species of bar navigates by emitting short bursts ofsoundwaves that have a frequency range that peaks at 58.0kHz.
a) If a bat is flying at 4.0 m/s toward a stationary object, whatisthe frequency of the sound waves reaching the object?
b) What is the frequency of the reflected sound waves detectedbythe bat?
c) What is the difference between the frequency of the soundwavesemitted by the bat and the frequency of the sound wavesdetected bythe bat if the bat is flying at 4.0 m/s and the objectis a mothapproaching at 1.0 m/s?

**If you can only solve one, that perfect. I just want to knowhowto do do problems similar to this, so I can understand how todothis in my future...

a. Audible wavelengths.The range of audible frequencies is fromabout 20.0 Hz to 2.00Ã104 Hz. What is range of the wavelengths ofaudible sound in air?

b. Visible light. The range of visible light extends from 400 nm to700 nm. What is the range of visible frequencies of light?

c.Brain surgery. Surgeons can remove brain tumors by using acavitron ultrasonic surgical aspirator, which produces sound wavesof frequency 23.0 kHz. What is the wavelength of these waves inair?

d.Sound in the body. What would be the wavelength of the sound inpart C in bodily fluids in which the speed of sound is 1480 m/s,but the frequency is unchanged?

Please solve this as early as possible.

(1). Light waves are electromagnetic waves that traval at 3. 00 x 10^8 m/s. The aye Is most sensitive to light having a wavelength of 5. 50 x 10^-7m. {a} Find the frequency of this light wave Hz =

Find the frequency of this light wave (HZ)
and its period(S).

2.The distance between two successive minima of a transverse wave is 3.00 m. Five full crest Intervals of the wave pass given point along the direction of travel every

14.2 s.

(a) Find the frequency of the wave Hz

(b} Find the wave speed m/s
3.
A harmonic wave bs traveling slong a repe It is observed that the oscillator that generates the wave completes 36.0 vibrations In 35.0 s Also, a given maximum travels 430 cm along the rope in 9.0 s What Is the wavelength in cm ?
4.
A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a Frequency of

8.54 x 10^4 Hz, and if the speed of sound in air is 343 m/s, what is the smallest Insect a bat can detect in mm ?
5. A cork on the surface of 5 pond bobs up and down two times per second an Hippies having a wavelength of 9.50 cm .If the cork is 11.5 m fram shore, how long does it take a tipple passing the cork to reach the shore ?
( )S.

6. Ocean waves are traveling te the east at 4. 7 m/s with a distance of 19 m between crests. (a) With what frequency do the waves hit the front of a boat when the boat Is at anchor?
( ) HZ

(b) With what frequency do the waves hit the front of a boat when the boat Is moving westward at 1.5 m/s?
( ) HZ

A circus performer stretches s tightrope between two towers. He strikes ane end of the rope and sends a wave atong it toward the other tower He notes that It takes the

wave 0. 840 s to reach the opposite tower, 20.0 m away If s 1.00-m length of the rope has a mass of 0.260 kg, find the tension In the tightrope .
( ) N ?.

8. Transverse waves with a speed of 52. 0 m/s are to be produced on a stretched string A 5 .20-m length of string with a total mass of 0.0600 kg Is used.

{a) What is the required tension in the string?
( )N
(b} Calculate the wave speed in the string if the tension Is 8. 00 N.
( )m/s . ?

9.A wave of amplitude 0 .53 m interferes with a second wave of amplitude 0 .19 m traveling in the same direction.

(a) What Is the largest resultant amplitude that can occur, and under what conditions will this maximum arise?

( ) m

1.The two waves interfere destructively,

2.The two waves interfere constructively.

(b) What is the smallest resultant amplitude that cah occur, and under what conditions will this minimum arise?
( ) m

1.The two waves interfere destructively

2.The two waves interfere constructively

10.

A certain tuning fork vibrates at a frequency of 161 Hz while each tip of Its two prongs has an amplitude of 0. 724 mm .

(a) What ts the per od of this motlon?
( )ms .

(b) Find the wavelength of the sound produced by the vibrating fork taking the speed of sound in alr to be 343 m/s.
( ) m .