The time it takes for a point to reach 0 displacement from maximum displacement is 
of a cycle. Thus, one period (
) will take 
.
The frequency is simply
.
The speed is given by:
The frequency is simply
The speed is given by:
Within a DNA molecule, which two nitrogen bases are correctly paired with one another?
2 answers:
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Complete question:
while hunting in a cave a bat emits sounds wave of frequency 39 kilo hartz were moving towards a wall with a constant velocity of 8.32 meters per second take the speed of sound as 340 meters per second. calculate the frequency reflected off the wall to the bat?
Answer:
The frequency reflected by the stationary wall to the bat is 41 kHz
Explanation:
Given;
frequency emitted by the bat, = 39 kHz
velocity of the bat, = 8.32 m/s
speed of sound in air, v = 340 m/s
The apparent frequency of sound striking the wall is calculated as;
The frequency reflected by the stationary wall to the bat is calculated as;