Answer:
The answers to the question are
(a) The integer n that describes the harmonic whose frequency is 571 Hz is 5
(b) The length of the tube is 0.75 m.
B. The depth of the well is 7.12 m.
Explanation:
The nth harmonic of a tube with one end closed is given by
and the next harmonic is
Therefore ividing the first two equations by each other we have
from which n =
Therefore the interger that descries the first harmonic is
n = = 5
(b) We have the length of the pipe given by
L = 5λ/4 but λ = v/f = 343/571 = 0.6 ∴ L = 5*0.6/4 = 0.75 m
B. From n = we have
n for the 36.1 Hz frequency
n = = 3 Therefore λ = v/f = 343/36.1 = 9.5 m
L = 3*λ/4 = 3*9.5/4 = 7.12 m
The well is 7.12 m deep
Answer:
Same momentum but speed is reduced 4 times.
Explanation:
According to the law of momentum conservation, the total momentum of the system before and after the collision is the same
Before the collision, the bigger car is at rest, only the 1st car of mass m is moving at speed v
p = mv
After the collision, both cars are connected and moving at speed V
P = (m + 3m)V = 4mV
These 2 momentum are equal
p = P
mv = 4mV
V = v/4
So after the collision, they have the same momentum but the speed decreased 4 times
The two objects perform the same task of measuring time and they are hourglass and sundial.
<h3>
What is an hourglass?</h3>
An hourglass is a device used to measure the passage of time.
The hourglass contains two glass bulbs connected vertically by a narrow neck that allows a regulated flow of a substance from the upper bulb to the lower one.
<h3>What is a
sundial?</h3>
A sundial is a horological device that is used to measure time of the day when there is sunlight by the apparent position of the Sun in the sky. Unlike hourglass, its doesn't move.
Thus, the two objects perform the same task of measuring time and they are hourglass and sundial.
Learn more about time measurement here: brainly.com/question/13893070
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Answer: 62.7
Explanation:
The specific heat capacity of water is 4.186 J you multiply 4.186 and 15.0 and you will get 62.7
Answer:
In dB intensity will be equal to 159.74 dB
Explanation:
We have given intensity of sound produced by one singer is 76.7 dB
Sound intensity is calculated as
Now it is given that 41 singers are singing in chorus
So total intensity =
Now in dB intensity will be