There's another tutorial, again... *sigh*
By the way, this tutorials are very important, therefore, for those who has tutorials to do & to finish, then plese do so as soon as possible, this is for your own good, for the future of the Ummah. This is the latest tutorial for u to download and try it by yourself. I know you are going to have a holiday for one week. yuuuhhuuuu... I'm happy for you...
Please take a look at this tutorial:
TUTORIAL 5B: VIBRATIONS, WAVES & SOUND
1. You drop a stone into a well that is 7.35 m deep. How long does it take before you hear the splash?
2. (a) A car moves with a speed of 45.0 mi/h toward a stationary observer as it's horn is blown emitting a frequency of 445 Hz. What frequency is heard by the observer?
(b) Two cars move toward each other having a speed of 22.5 mi/h. If one car's horn is blown with a frequency of 445 Hz, what frequency is heard by observers in the other car?
3. A pipe has a length of 2.46m
a) Determine the frequencies of the first three harmonics if the pipe is open at each end. Take 345 m/s as the speed of sound in air.
b) What are the lowest possible frequencies if the pipe is closed at one end and open at the other?
c) Sketch a wave pattern for fundamental frequency if;
i. The pipe is open at one end and close at the other
ii. The pipe is open at both end
4. A 3.00 m long pipe is in a room where the temperature is 200C.
Case 1: Open pipe
a) What is the fundamental frequency?
b) What is the frequency of the second harmonic?
Case 2: Closed pipe
a) What is the fundamental frequency?
b) What is the frequency of the second harmonic?
5. A train at rest emits a sound at a frequency of 1 000 Hz. An observer in a car travels away from the sound source at a speed of 30.0 m/s. What is the frequency heard by the observer?
QUESTIONS IN THE TEXT BOOK:
23, 25, 26, 27, 28, 30 PAGE: 493
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