Answer:
Rate at which water is being pumped into the tank,
Explanation:
Rate at which water is leaking out,
Height of the tank, h = 12 m
The top diameter of the tank, d = 8 m = 800 cm
The top radius of the tank, r = d/2 = 800/2 = 400 cm
The rate of change of water height, dh/dt = 30 cm/min
Height of water = 2 m
By carefully observing the diagram contained in the file attached to this solution, using the property of similar triangle:
h/r = 12/4
r = h/3
Since the tank is conical, volume of the water at time, t will be:
Finding the derivative of the above with respect to t to get the rate of change in the volume of water.
The correct answer is “C” ultrasound. Hope this helps!
Answer:
f = 687.85 Hz
Explanation:
Given that,
The wavelength of sound wave,
We need to find the frequency of the sound wave. The relation between wavelength and frequency is given by :
v is speed of sound at T = 35°C = 308.15 K
So,
So, the frequency of the sound is 687.85 Hz.
The sound level of the sound wave due to the ambulance is 140.
<h3>What do you mean by sound?</h3>
In terms of physics, the sound is a vibration that travels through a transmission medium like a gas, liquid, or solid as an acoustic wave. Sound is the reception of these waves and the brain's perception of them in terms of human physiology and psychology. Only acoustic waves with frequencies between roughly 20 Hz and 20 kHz, or the audio frequency range, can cause a human to have an auditory sensation. These are sound waves with wavelengths ranging from 17 meters (56 ft) to 1.7 millimeters in the air at atmospheric pressure (0.67 in). Ultrasounds are sound waves with a frequency higher than 20 kHz that are inaudible to humans. Infrasound refers to sound frequencies below 20 Hz. Animals of different species have different hearing ranges.
To learn more about sound, Visit:
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The answer is the first one: Cable waves