Written accounts, objects, and buildings are examples of the types of evidence that historians and archaeologists study to expla
2 answers:
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Answer:
a.3Hz
b.0.0034m
Explanation:
First, we know the flute is an open pipe, because open pipe as both end open and a close organ pipe as only one end close.
The formula relating the length and he frequency is giving as
.
a.we first determine the length of the flute at the fundamental frequency i.e when <em>n</em>=1 and when the speed is in the 342m/s
Hence from
.
since the value of the length will remain constant, we now use the value to determine the frequency when the air becomes hotter and the speed becomes 345m/s.
Hence the require beat is
.
b. since the length is dependent also on the speed and frequency, we determine the new length when she plays with a fundamental frequency when the speed of sound is 345m/s
using the formula
Now to determine the extension,
Answer:
Explanation:
Given
angular velocity
Combined moment of inertia of stool,student and bricks
Now student pull off his hands so as to increase its speed to suppose rev/s
After Pulling off hands so final moment of inertia is
Conserving angular momentum as no external torque is applied