Answer:
6.6 beats per second
Explanation:
For a closed-end pipe, the fundamental frequency is given by
where
v is the speed of sound
L is the length of the pipe
Here we have
v = 346 m/s
L = 59.9 cm = 0.599 m
So the fundamental frequency is
The frequency of the signal generator is
So the beat frequency is given by the absolute value of the difference between the two frequencies:
which means that 6.6 beats per second are heard.
This is due to the Doppler effect. The position you are in regard to the sound wave causes a change in the amplitude which affects frequency and moves the pitch up
Answer:
1.18
Explanation:
The flow rate of blood is proportional to the fourth power of its radius as given the Poiseuille's law.
The law is :
It is given here that the flood flow rate is been reduced to half its normal value. Therefore,
So, for the radius and , the ratios of their flow rates are :
It is given that the flow rate is reduced to half. So we have,
or
So the radius changes by a factor of 1.18
Answer:
<em>Fission</em> means breaking.
The process of combining two small nuclei is called <em>fusion</em>.
Explanation:
The process of breaking a heavy nuclei to form two or more lighter nuclei is called <em>Fission</em>.
The heavy nuclei ,like Uranium, are bombarded with slow moving electrons, which are known as thermal electrons. On bombarding, the nuclei disintegrates to form two or more smaller nuclei releasing a huge amount of energy in the process. Fusion is a exothermic process.
The process of fusion is used in nuclear reactors.
Example:
The process of combining two lighter nuclei to form a heavier nuclues is called Fusion.
Energy is released or absorbed during the process.
Fusion takes place in the sun.
Answer:
24000 kg·m/s
Explanation:
Momentum is Mass x Velocity, so 1200 kg time 20 m/s = 24000 kg-ms/s