
Speed of sound in air = 343 m/s
Train
1 speed V1 = 1.30*10^2 km/h =
= 36.1 m/s
Train 2 speed V2 = 90.0 km/h =
= 25.0 m/s


, frequency
heard by engineer on train 1.
Two trains on separate tracks move toward each other. Train 1 has a speed of 1.30...
Two trains on separate tracks move toward each other. Train 1 has a speed of 141 km/h; train 2, a speed of 85.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1? Hz
Two trains on separate tracks move toward each other. Train 1 has a speed of 109 km/h; train 2, a speed of 96.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1? Hz
Two trains on separate tracks move toward one another. Train 1 has a speed of 110 km/h, train 2 a speed of 85.0 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.)
Two trains on separate tracks move toward each other. Train 1 has a speed of 113 km/h; train 2, a speed of 59.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1? Hz A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 30.7 dB. The hearing aid picks up sound having a frequency of 250 Hz...
.. + -/1 points SerCP10 14.P.025.WI. Two trains on separate tracks move toward each other. Train 1 has a speed of 117 km/h; train 2, a speed of 73.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1?
Two trains approach each other on separate but adjacent tracks. Train 1 is traveling at a speed of 29.9 m/s and train 2 at a speed of 21.6 m/s. If the engineer of train 1 sounds his horn which has a frequency of 520 Hz, determine the frequency of the sound heard by the engineer of train 2. (Use 343 m/s as the speed of sound. Enter your answer to the nearest Hz.)______ Hz
Two trains approach each other on separate but adjacent tracks. Train 1 is traveling at a speed of 35.9 m/s and train 2 at a speed of 27.6 m/s. If the engineer of train 1 sounds his horn which has a frequency of 520 Hz, determine the frequency of the sound heard by the engineer of train 2. (Use 343 m/s as the speed of sound. Enter your answer to the nearest Hz.)
Two trains traveling on parallel tracks are going toward each other from a distance of 300 kilometers. If one train is moving at 90 kilometers per hour and the other is moving at 60 kilometers per hour, after how many hours will the trains pass each other?
Two trains leave towns 1120 kilometers apart at the same time and travel toward each other. One train travels 18 km hours, what is the rate of each train? faster than the other. If they meet in 4 Note that the ALEKS graphing calculator can be used to make computations easier. Rate of the faster train: = X 5 ? Rate of the slower train: =
a French submarine and a U.S. submarine
move toward each other during maneuvers in motionless
water in the North Atlantic. The French sub moves at speed
v
F
50.0 km/h, and the U.S. sub at
v
US
70.0 km/h. The
French sub sends out a sonar signal (sound wave in water) at
1000 Hz. Sonar waves travel at 5470 km/h. (a) What is the
signal’s frequency as detected by the U.S. sub? (b) What
fre-
quency is detected by the...