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November 23, 2014

Search: What will be the beat frequency heard when the two strings are played together?

Number of results: 43,393

physic
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 110 Hz has two strings at this frequency. If one string slips from its normal tension of 550 N to 520.00 N, what beat frequency is heard ...
June 1, 2011 by sisca

Physics
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 110 Hz has two strings at this frequency. If one string slips from its normal tension of 610 N to 542.00 N, what beat frequency is heard ...
March 29, 2014 by Jen

Physics
In one of the original Doppler experiments, one tuba was played on a moving platform car at a frequency of 75 Hz, and a second identical one was played on the same tone while at rest in the railway station. What beat frequency was heard if the train approached the station at a...
February 11, 2010 by Anonymous

Physics(Please help)
The two strings have the same tension and mass per unit length, but they differ in length by 0.54 cm. The waves on the shorter string propagate with a speed of 41.7 m/s, and the fundamental frequency of the shorter string is 227 Hz. Determine the beat frequency produced by the...
June 22, 2012 by Hannah

More Frequency - Physics
A guitar player plucks two strings simultaneously. One string is tuned to a (fundamental) frequency of 381 Hz. It is found that beats are audible, with a beat frequency of 5.54 Hz. What are possible values for the frequency of the other string? (Answer the larger frequency ...
November 29, 2010 by Rachel

Physics
Standing waves are set up on two strings fixed at each end, as shown in the drawing. The two strings have the same tension and mass per unit length, but they differ in length by 0.55 cm. The waves on the shorter string propagate with a speed of 41.8 m/s, and the fundamental ...
November 30, 2009 by Daniel

physics
.Two automobiles are equipped with the same single-frequency horn. When one is at rest and the other is moving toward an observer at 14 m/s, a beat frequency of 5.1 Hz is heard. What is the frequency the horns emit? Assume T = 20C.
April 9, 2012 by Anonymous

Physics
Ultrasound reflected from an oncoming bloodstream that is moving at 30 cm/s is mixed with the original frequency of 1.3 MHz to produce beats. What is the beat frequency? (Velocity of sound in blood = 1540 m/s.) Beat frequency = Hz HELP: This problem involves two Doppler shifts...
December 9, 2010 by Angel

Physics
A guitar string has a tension of 100 N and is supposed to have a frequency of 110 Hz. When a standard tone of that value is sounded while the string is plucked, a beat frequency of 2 Hz is heard. The peg holding the string is loosened (decreasing the tension) and the beat ...
February 3, 2013 by Ryan

physics
Two strings are adjusted to vibrate at exactly 224 Hz. Then the tension in one string is increased slightly. Afterward, three beats per second are heard when the strings vibrate at the same time. What is the new frequency of the string that was tightened? (in Hz)
August 7, 2012 by Caitlin

Physics
Two out-of-tune flutes play the same note. One produces a tone that has a frequency of 242 Hz, while the other produces 288 Hz. When a tuning fork is sounded together with the 242-Hz tone, a beat frequency of 26.0 Hz is produced. When the same tuning fork is sounded together ...
March 3, 2013 by Tim

waves and sound
1-A tunning fork has a frequency of 440Hz. The string of a violin and this tuning fork, when sounded together, produce a beat frequency of iHz. From these two pieces of information alone, is it possible to determine the exact frequency of the violin string?... I feel like this...
May 17, 2009 by Cynthia

Physics
When two tuning forks are stuck simultaneously, 3 beats per second are heard. The frequency of one fork is 510 Hz. A piece of wax is placed on the 510 Hz fork to lower its frequency slightly. If the beat frequency is increased, what is the correct frequency for the second fork...
May 15, 2013 by dallas

physics
A certain dog whistle operates at 23.5 kHz, while another (brand X) operates at an unknown frequency. If neither whistle can be heard by humans when played separately, but a shrill whine of frequency 9200 Hz occurs when they are played simultaneously, estimate the operating ...
April 23, 2012 by Drew

Physics
A certain dog whistle operates at 23.5 kHz, while another (brand X) operates at an unknown frequency. If neither whistle can be heard by humans when played separately, but a shrill whine of frequency 9200 Hz occurs when they are played simultaneously, estimate the operating ...
April 23, 2012 by Zach

Physics
One closed pipe organ has a length of 2.5 m. The frequency of the note is 34.3 Hz. When a second pipe is played at the same time, a 1.7 Hz beat note is heard. By how much is the second pipe too long? Would you have to use the frequency of the second pipe to find the length of ...
December 6, 2007 by Einstein

Physics
Two identical violin strings, when i tune and stretched with the same tension, have a fundamental frequency of 440Hz. One of the strings is retuned by adjusting the tension. When both strings are pluckes simultaneously, after one has been retuned, 1.5 beats per second are ...
March 29, 2008 by Amanda

physics
When a guitar string is sounded along with a 440Hz tuning fork, a beat frequency of 5Hz is heard. When the same string is sounded along with a 43Hz tuning fork, the beat frequency is 9Hz. What is the frequency of the string??.. The first thing i thought of doing was putting ...
May 17, 2009 by help:(

Physics HW ...HELP!!
Two identical guitar strings are stretched with the same tension between supports that are not the same distance apart. The fundamental frequency of the higher-pitched string is 400Hz, and the speed of transverse waves in both wires is 200 m/s. How much longer is the lower-...
December 12, 2012 by Anonymous

Physics please help me
Two identical guitar strings are stretched with the same tension between supports that are not the same distance apart. The fundamental frequency of the higher-pitched string is 400Hz, and the speed of transverse waves in both wires is 200 m/s. How much longer is the lower-...
December 12, 2012 by Anonymous

physics
Two pipes, equal in length, are each open at one end. Each has a fundamental frequency of 475 Hz at 297 K. In one pipe the air temperature is increased to 304 K. If the two pipes are sounded together, what beat frequency results?
December 7, 2012 by Emily

Physics- PLEASE HELP
Two pipes of equal length are each open at one end. Each has a fundamental frequency of 715 Hz at 300 K. In one pipe the air temperature is increased to 313 K. If the two pipes are sounded together, what beat frequency results?
December 5, 2012 by Tia

physics
A piano tuner hears one beat every 2.8 s when trying to adjust two strings, one of which is sounding 440 Hz, so that they sound the same tone. How far off in frequency is the other string?
February 10, 2010 by DJ

Physics- Please Help, soooo lost!
Two pipes of equal length are each open at one end. Each has a fundamental frequency of 715 Hz at 300 K. In one pipe the air temperature is increased to 313 K. If the two pipes are sounded together, what beat frequency results?
December 4, 2012 by Mary

physics..please help me due in a couple of mins.!!
Two identical guitar strings are stretched with the same tension between supports that are not the same distance apart. The fundamental frequency of the higher-pitched string is 400Hz, and the speed of transverse waves in both wires is 200 m/s. How much longer is the lower-...
December 12, 2012 by Kathy

Physics
Two cars have identical horns, each emitting a frequency of f= 395 hz. One of the cars is moving with a speed of 12 m/s toward a bystander waiting at a corner, and the other car is parked. The speed of sound is 343 m/s. what is the beat frequency heard by the bystander?
July 23, 2012 by hayley

physics
Two instruments are playing musical note "A" (440 Hz). A beatnote with a frequency of 2.5 Hz is heard. Assuming that one instrument is playing the correct pitch, what is the frequency of the pitch played by the second instrument?
February 1, 2011 by laila

Physics
Piano tuners tune pianos by listening to the beats between the harmonics of two different strings. When properly tuned, the note A should have the frequency 440 Hz} and the note E should be at 659 Hz}. The tuner can determine this by listening to the beats between the third ...
November 8, 2009 by AP

physics
An observer rides with a moving sound source directly toward a large vertical wall. The vehicle has a constant speed of 10m/s and the source has a frequency of 150Hz. What beat frequency is heard by the observer as a result of the combination of the direct and reflected sounds?
January 16, 2013 by Offiong

Physics waves
I am stuck with both of these questions. Thanks in advanced! 1. If one tone has a frequency of 110 Hz and another tone is played near it with a tone of 113 Hz, the beat frequency is ___ Hz 2. A standing wave has 3 nodes in a string 20 m long. The wavelength of this wave is __ ...
April 20, 2014 by Liz

College Physics
Finally, your friend's twin engine jet airplane lands. As it stands on the runway, you hear the sound of the engines getting louder and softer, rhythmically once every 2.3 s. The average frequency you hear is 3650 Hz. What are the differences between the average frequency and ...
December 10, 2010 by Anonymous

physics
A police car, whose siren has a natural frequency of 620Hz, moves away from a wall and towards a stationary observer at a speed of 30km/h. What is the beat frequency perceived by the observer? If the observer stands between the car and the wall, what beat frequency does he ...
October 9, 2013 by David

physics - doppler effect
Two identical tuning forks can oscillate at 329.6 Hz. A person is located somewhere on the line between them. The speed of sound in the air is 343 m/s. Calculate the beat frequency as measured by this individual under the following conditions. (a) the listener is standing ...
April 21, 2007 by COFFEE

Physics
Two ships in a heavy fog are blowing their horns, both of which produce sound with a frequency of 165.0 Hz One ship is at rest; the other moves on a straight line that passes through the one at rest. If people on the stationary ship hear a beat frequency of 3.5 Hz, what is the...
November 22, 2011 by Cooper

Physics: Sound Waves
Two organ pipes, open at one end but closed at the other, are each. 1.14 m long. One is now lengthened by 2.00 cm. Find the frequency of the beat they produce when playing together in their fundamental.
July 16, 2010 by Brianna

physics
wave speed: the violin is a four stringed instrument tuned so that the ratio of the frequencies of adjacent strings is 3:2. (This is the ratio when taken as high frequency to lower frequency.) If the diameter of E string (the highest frequency) on a violin is 0.25 mm, find the...
December 3, 2012 by zoe

Physics
4 kg mass is placed on the smooth horizontal tabke.two light inextansible strings are connected to it and two masse 2kg and 5kg are attached to the free ends of the strings. Find the accelaration of each objects and the tension of the strings
February 8, 2013 by Anonymous

Physics
Physics Question Finally, your friend's twin engine jet airplane lands. As it stands on the runway, you hear the sound of the engines getting louder and softer, rhythmically once every 2.3 s. The average frequency you hear is 3650 Hz. What are the differences between the ...
December 6, 2010 by CollegeKid

physics
a 1.29 kg ball is connected by means of two massless strings to a vertical, rotating rod. The strings are tied to the rod and are taut. The tension in the upper string is 38 N. The length of both strings is 1.70m and the distance between the strings on the rod is 1.7.
November 20, 2011 by K

Physics
The beat frequency is 8Hz. What is f2 if f1 is 350Hz? F2=350Hz +/- 8Hz = 342Hz or 358Hz. If the beat frequency increases at 340Hz then it means that f2 must be 358Hz. Why??
June 3, 2013 by Crystal

physics
A 0.0150 kg, 2.09 m long wire is fixed at both ends and vibrates in its simplest mode under a tension of 214 N. When a tuning fork is placed near the wire, a beat frequency of 5.20 Hz is heard. What are the possible frequencies of the tuning fork? I solved for speed using ...
November 26, 2009 by Anonymous

physics
A ball of mass m = 500g moves around a vertical axis with an angular speed . It is attached to two strings of length: the upper a = 30 cm and the lower b = 40 cm.Both strings are taut and perpendicular to each other. Each of the strings beaks if the tension exceeds 12.6 N. ...
December 9, 2008 by jamie

Physics
Two eagles fly directly toward one another, the first at 13 m/s and the second at 21 m/s. Both screech, the first emitting a frequency of 3200 Hz and the second, a frequency of 3800 Hz. What frequencies do they hear if the speed of sound is 345 m/s? (Tip: keep 4 significant ...
December 6, 2010 by Cindy

Physics
In the absence of a nearby metal object, the two inductances (LA and LB) in a heterodyne metal detector are the same, and the resonant frequencies of the two oscillator circuits have the same value of 510.0 kHz. When the search coil (inductor B) is brought near a buried metal ...
March 21, 2013 by Elizabeth

Physics
In the absence of a nearby metal object, the two inductances (LA and LB) in a heterodyne metal detector are the same, and the resonant frequencies of the two oscillator circuits have the same value of 580.0 kHz. When the search coil (inductor B) is brought near a buried metal ...
April 11, 2013 by Anonymous

Math
On an EKG strip a nurse determines that a patient's heart is beating 5 times every 4.5 seconds. Calculate the time for each heart beat. I don't really understand what the question is asking for? Is it looking for how often the beats will occur (4.5/5)= 0.9 seconds??? Or is it ...
September 12, 2014 by RIC

physical
Two identical half-open pipes each have a fundamental frequency of 450 Hz. What percentage change in the length of one of the pipes will cause a beat frequency of 13.0 Hz when they are sounded simultaneously? Assume the speed of sound in air is 342 m/s.
July 16, 2012 by itufizik

physics
An object of weight 50 N is suspended vertically by two strings. The strings are of the same lenght and the angle between them is 60 degree. Draw a free body diagram of the forces acting on the object. Calculate the tension in the strings.
March 15, 2014 by waslat

Physics
Question: Two strings at different lengths and linear densities are joined together. They are stretched so that the tension in each string is 190.0 N. The free ends are fixed in place. Find the lowest frequency that permits standing waves in both strings with a node at the ...
July 11, 2011 by Tina

Physics
Youve purchased two identical violin strings. You install one of the strings in a conventional violin; the other string you stretch between two posts, each attached to rigid concrete pillar in the open air. Both strings are made of the same materials, have the same length and...
July 10, 2013 by Anonymous

physics
A car traveling at 24.3 m/s honks its horn as it directly approaches the side of a large building. The horn produces a long sustained note of frequency f0 = 213 Hz. The sound is reflected off the building back to the car's driver. The sound wave from the original note and that...
April 1, 2011 by jean

physics
A car traveling at 22.1 m/s honks its horn as it directly approaches the side of a large building. The horn produces a long sustained note of frequency f0 = 235 Hz. The sound is reflected off the building back to the car's driver. The sound wave from the original note and that...
April 2, 2011 by help me

physics
Two balls have the same mass of 3.085 kg and identical charges of 21.0 C. They hang from the ceiling on strings of identical length as shown in the figure. If the angle with respect to the vertical of the strings is 22.0, what is the length of the strings
October 14, 2011 by emine

Math
Three blue and five red balloons are each tied to a string and the strings are held together. If one of the strings is selected at random, determine the odds in favor of the balloon being red.
April 16, 2011 by Valerie

M1, Physics
Two hooks A and B are fixed to a ceiling, where AB is 2.5 m. A small object of mass 3 kg is suspended from A and B by two light inextensible strings so that it is 2 m from A and 1.3 m from B. calculate the tension in strings
March 24, 2012 by John

pfysics
Two balls have the same mass of 0.525 kg and identical charges of 13.0 μC. They hang from the ceiling on strings of identical length as shown in the figure. If the angle with respect to the vertical of the strings is 22.0, what is the length of the strings?
October 15, 2011 by onder

physical
You are playing a note that has a fundamental frequency of 440.00 Hz on a guitar string of length 59.1 cm. At the same time, your friend plays a fundamental note on an open organ pipe, and 4.0 beats per seconds are heard. The mass per unit length of the string is 1.93 g/m. ...
April 18, 2014 by mican

physics
A bat moving with a speed of 3.55 m/s and emitting sound of 34.0 kHz approaches a moth at rest on a tree trunk. What frequency is heard by the moth? Calculate the frequency heard by the moth when the speed of the bat is 5.55 m/s.
March 11, 2014 by utl

physics
Two cars, one in front of the other, are traveling down the highway at 25 m/s. The car behind sounds its horn, which has a frequency of 500 Hz. What is the frequency heard by the driver of the lead car? (vsound = 340 m/s). I have the answer but I just don't know how to get it...
July 12, 2010 by Katie

physics
Two trains are moving in opposite diections on parallel tracks and are appoaching a station. Horns on both trains are producing sound of frequency of 500Hz. One train is approaching at 32m/sec. What is the speed of the other train if an observer at the station hears a beat ...
May 7, 2013 by reddy22

physical
You are playing a note that has a fundamental frequency of 466.16 Hz on a guitar string of length 59.9 cm. At the same time, your friend plays a fundamental note on an open organ pipe, and 4.0 beats per seconds are heard. The mass per unit length of the string is 1.85 g/m. ...
July 16, 2012 by itufizik

english editing (the rest))
"Yes I did" the turtle said. They went on arguing, and arguing the rabbit lost his mind; He got a stick, and start beating the turtles back shell. Break the shell all up. That is why the turtle has spots all over him. The Turtle was all beat up, broken back, and laying down ...
November 30, 2011 by Anonymous

music
Can a beat be shown and not heard? I need to be able to demonstrate.
August 28, 2012 by Kam

physics
A doubly tethered model airplane of mass 1.0 kg is attached to a vertical rod by two very light strings that are 2.0 each in length. the airplane and the the strings rotate in a horizontal circleabout the rod with both the strings remaining taut.The attachment points of the ...
October 30, 2007 by Sam

PHYSICS
Two waves with different periods are described mathematically by: y3 = (7.0 m)cos[ 2kt/(3.0 ms) - k/2 ] y4 = (2.0 m)cos[ 2kt/(3.1 ms) V 3k/2] What is the beat frequency for these two waves?
April 11, 2011 by James

Physics
Two waves with different periods are described mathematically by: y1 = (7.0 m)cos[ 2kt/(3.0 ms)-k/2 ] y2 = (2.0 m)cos[ 2kt/(3.1 ms)-3k/2] What is the beat frequency for these two waves?
April 13, 2011 by James

physics
Two identical mandolin strings under 200 N of tension are sounding tones with frequencies of 577 Hz. The peg of one string slips slightly, and the tension in it drops to 190 N. How many beats per second are heard?
April 21, 2008 by Chris Adison

physics
Two identical mandolin strings under 200 N of tension are sounding tones with frequencies of 577 Hz. The peg of one string slips slightly, and the tension in it drops to 190 N. How many beats per second are heard?
April 21, 2008 by Chris Adison

physical
You are traveling in a car toward a hill at a speed of 42.1 mph. The car's horn emits sound waves of frequency 251 Hz, which move with a speed of 343 m/s. a) Determine the frequency with which the waves strike the hill. b) What is the frequency of the reflected sound waves you...
July 16, 2012 by itufizik

physics
You are traveling in a car toward a hill at a speed of 40.8 mph. The car's horn emits sound waves of frequency 243 Hz, which move with a speed of 340 m/s.The frequency with which the waves strike the hill is 254.7Hz and the frequency of the reflected sound waves you hear 271.2...
March 31, 2012 by sara

math
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them. One of the trains moves at 30.0 m/s, and the observer hears a beat frequency of 3.6 beats per second. What is the speed of ...
April 2, 2013 by lucy

Physics
A mobile consists of two very lightweight rods of length l = 0.400 m connected to each other and the ceiling by vertical strings. (Neglect the masses of the rods and strings.) Three objects are suspended by strings from the rods. The masses of objects 1 and 3 are m1 = 5.90 kg ...
June 22, 2012 by Luca

particular tense was chosen
Why a particular tense was chosen for each of the following statements. Select the best answer. A. Jack has known Mike for about a year. 1. Use the present perfect when the exact time of a past repeated action isn't important 2. Use the past perfect to show the sequence of two...
June 11, 2013 by Jim Collum

physics help pleased
Two trains on separate tracks move toward one another. Train 1 has a speed of 125 km/h and train 2 a speed of 100.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1? (Assume the speed of sound is 345 m/s.)
January 28, 2011 by julie

phy
At a factory, a noon whistle is sounding with a frequency of 484 Hz. As a car traveling at 77 km/h approaches the factory, the driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the change in frequency ff − fi...
April 12, 2013 by kira

Physics
Two Train whistles, A and B each have a frequency of 408Hz. A is stationary and B is moving toward the right (away from A) at a speed of 35.0m/s. A listener is between the two whistles and is moving toward the right at a speed of 15.0m/s. What is the frequency from A and B as ...
April 25, 2014 by tre

physics
A body of mass m is suspended by two strings (right strings equals an angle a with horizontal and left an angle B with vertical. Dra the figure.
April 21, 2014 by rupesh

Physics
An open organ pipe of length 0.744411 m and a closed one of length 1.10545 m are sounded together. What beat frequency is generated by the first overtone of the closed pipe with the fundamental of the open pipe? The speed of sound is 340 m/s. Answer in units of Hz
May 15, 2013 by chris

physics--please help
how do you find beat frequency?
March 30, 2012 by sara

physics--please help
You are traveling in a car toward a hill at a speed of 40.8 mph. The car's horn emits sound waves of frequency 243 Hz, which move with a speed of 340 m/s.The frequency with which the waves strike the hill is 254.7Hz and the frequency of the reflected sound waves you hear 271.2...
April 1, 2012 by sara

physics--please help
You are traveling in a car toward a hill at a speed of 40.8 mph. The car's horn emits sound waves of frequency 243 Hz, which move with a speed of 340 m/s.The frequency with which the waves strike the hill is 254.7Hz and the frequency of the reflected sound waves you hear 271.2...
April 1, 2012 by sara

physics
Three blocks of masses M1=26kg,M2=38kg and M3=41kg are connected by 2 strings over 2 pulleys.Friction is negligible. 1. Determine the magnitude of acceleration and 2. the magnitude of the tension in each of two strings
October 24, 2011 by rajesh

physics
A 4.00-kg object is attached to a vertical rod by two strings. The object rotates in a horizontal circle at constant speed 6.00 m/s. What is the tension in the upper string and the lower string. Well your missing information here, in order to compute the centripetal force you ...
October 9, 2006 by Jazz

Computer Science
Given three Strings, str1, str2 and str3, return the longest String. If all three Strings have the same length, return "same". There will not be a tie between two longest Strings. longestString("apple", "banana", "pear") → "banana" longestString("one", "two", "three") &#...
October 30, 2012 by S

physics
Two sounds, one of 200 Hz and one of 194 Hz occur at the same time. What beat frequency do you hear? Show your calculations I'm not looking for someone to do my homework for me. I just don't know what formula to use to figure it out.
January 25, 2012 by Bethany

Physics
Two violin players tuning their instruments together hear 8 beats in 2 s. What is the frequency difference between the two violins
May 5, 2010 by Anonymous

Physics
Two trains with 112-Hz horns approach one another. The slower of the two trains has a speed of 26 m/s. What is the speed of the faster train if an observer standing near the tracks between the trains hears a beat frequency of 4.7 Hz? (Express your answer to the nearest 0.1 m/s...
April 24, 2013 by Valerie

Physics
A Doppler blood flow meter emits ultrasound at a frequency of 5.0 MHz. What is the beat frequency between the emitted waves and the waves reflected from blood cells moving away from the emitter at 0.15m/s? Assume that v_sound=1540m/s in blood.
November 7, 2009 by N.

Physics
At a factory, a noon whistle is sounding with a frequency of 480 Hz. As a car traveling at 85 km/h approaches the factory, the driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the change in frequency ff − fi...
April 17, 2012 by Armany

Physics
Please someone help me I'm desperate!!!! Two steel guitar strings have the same length. String A has a diameter of 0.59 mm and is under 420.0 N of tension. String B has a diameter of 1.3 mm and is under a tension of 840.0N . Find the ratio of the wave speeds,VA/VB , in these ...
November 20, 2009 by Frank

Physics Help!!!
One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its fundamental mode. Part A- If the tension in this string is increased by 3.2 , what will be the new fundamental frequency of the string? F= ? Hz i understood ...
April 3, 2012 by Kelly

Physics Help!!!
One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its fundamental mode. Part A- If the tension in this string is increased by 3.2 , what will be the new fundamental frequency of the string? F= ? Hz i understood ...
April 3, 2012 by Kelly

physics
A bat flying at 4.54 m/s emits a chirp at 115 kHz. If the pulse is reflected by a wall, what is the frequency (kHz) of the echo heard by the bat? The temperature of the air is 25.0 C. (HINT: What is the source of the sound heard by the bat?)
February 11, 2014 by Anonymous

physics
An acoustic burglar alarm consists of a source emitting waves of frequency 28.0 kHz. What is the beat frequency between the source waves and the waves reflected from an intruder walking at an average speed of 0.095 m/s directly away from the alarm?
September 27, 2014 by onon

ohysics
how to find the tension in two strings, 0.75 kg meter stick is supported at the 10 cm mark and the 75 cm mark by strings. a 3.5 kg is at the 25 cm mark and a 2.5 kg is at the 90 cm mark.
May 14, 2011 by cinthia

phy
1. A Uniform rod AB 3m long weighing 3 Kg is held horizontally by two strong vertical strings at its ends. A weight of 7 kg is hanging on the rod at a distance of 1m from end A and another weight of 12 Kg is hanging at 0.5 m from end B.(a)Make the free body diagram of the rod ...
August 24, 2010 by shiva

physics
a 333 hz and 337 hz tuning forks are struck simultaneously. whats will be the beat frequency?
May 30, 2012 by Michael

Physics
The top string of a guitar has a fundamental frequency of 300 Hz when it is allowed to vibrate as a whole, along all its 60.0 cm length from the neck to the bridge. A fret is provided for limiting vibration to just the lower two-thirds of the string. The guitarist can play a "...
April 13, 2011 by ECU

Ice Hockey
what = it is a team sport played on ice who = people from all over the world come to play this sport when = it is played in winter. it was staged at the olympics since 1920 where = it is played in areas that are really cold such as canada, the u.s, etc. why = it is played ...
February 21, 2010 by Anonymous

Physics
15 beats are heard in 5 seconds when a piano key and a tuning fork of slightly higher frequency (440 Hz) are struck at the same time. What is the frequency of the sound emitted by the piano key?
March 30, 2011 by Brent

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