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in example a the first vector is 27° with a force of 23 n. the second vector us 75° with a force of 30 n. use 10 n = 1 cm as your scale. what is the resulting vector?
example b the first vector is 224° with a force of 27 n. the second vector is 123°, with a force of 32 n. what is the resulting vector?
in example c the first vector is 80° with a force of 16 n. the second vector is 144° with a force of 48 n. what is the force and degrees of the resulting vector?
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Ответ:
Part a)
f = 371.1 Hz
Part b)
f = 417.7 Hz
Part c)
beat frequency = 46.6 Hz
Explanation:
Part a)
Due to doppler's Effect the frequency of the sound heard by the train which is moving away from the observer is given as
Part b)
Now from the second train which is approaching the person we can say
Part c)
As we know that beat frequency is the difference in the frequency from two sources