Answer:
The 15 m wide section of the stream is 3 m deep.
Explanation:
The Flow rate of the water remains constant throughout.
Flow rate = Velocity x depth x width
Flow rate = (3)(30)(1)
Now the depth,width and velocity of the flow stream has changed but the flow rate still remains same. So,
Assuming depth to be D,
90 = (2)(15)(D)
D = 3 m
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Answer:
Two wave will be coherent when they have the wavelength, amplitude, and phase of the constituent wave forms must be identical.
Where as interference is the addition of two wave considering the mathematical sense while adding them.
when two wave of same sense add together they for constructive interference. like two +ve sense or -ve sense will form constructive interference.
when the are are of different sense the form destructive interference. like one positive wave added with -ve one.
<span>Copper is a good conductor of electricity because its atoms have a loosely held electron in their outer shell that is able to move freely to other atoms.</span>
Answer:
1300 Hz
Explanation:
f' = Actual frequency = 4.8 MHz
f = Observed frequency
= Relative velocity of blood = 0.21 m/s
v = Velocity of ultrasound = 1540 m/s
From the Doppler effect formula we have
Frequency shift is given by
The frequency shift in the sound is 1300 Hz
