Answer:
4
Explanation:
Given that length of tube,L=1 m
Frequency ,f=653 Hz
We know that
V= f λ
4 L = nλ
So we can say that

Where n is the odd number .
Here V=343 m/s
a)
For n=1:


For n=3:


For n=5:


For n=7:


So total positions will be 4.
Answer:
• let's first get time

• let's find horizontal displacement

- g is acceleration due to gravity [ vertically: g is 10 m/s². horizontally: g is 0 ]
Answer:
0.913
Explanation:
k.e=1/2mv square
k.e=1/2×0.078g×23.4256m/s square
k.e=0.913J
Answer: The observed frequency is 518.6 Hz
Explanation:
By the Doppler Effect, we know that:
f' = ((v + v0)/(v - vs))*f
where f' is the perceived frequency.
v is the velocity of the wave, in this case 330m/s
v0 is the velocity of the receptor, in this case 0m/s
vs is the velocity of the source, in this case -50m/s (the minus sign is because it is coming thowards us)
f is the original frequency, f = 440hz.
then we have:
f' = 440hz*(330m/s)/(330m/s - 50m/s) = 518.6 Hz
Weight is mass times gravitational acceleration. Without a specific location, Earths average gravitational acceleration is 9.807.
So .5x9.8.07= weight
The answer is 4.9035 newtons