da answer is liquiddddddddd
Answer: 10.6 sec
Explanation:
Because I got it right on my quiz :D
also because you can use the impulse momentum formula, Ft=m(triangle)v
so basically u do 16m/s-2m/s=14m/s and thats your triangle v (change in velocity) then multiply 14 times the mass, which is 34. Thats 476, so now you have ft=476, and you know F, the force, so all you have to do is divide 476 by 45, and you get like 10.5777777 which rounds up to 10.6!
This depends on whether the pipe is closed or open ended.
The fundamental frequency of a pipe is the simplest, smallest portion of a wave that can fit into a pipe. At the open end of a pipe, there is always an antinode - an area with maximum air movement.
If it is an open ended pipe, there is an antinode at each end, meaning that the length of the pipe is equal to 1/2 <span>λ
</span>. Manipulating the formula <span><span>v=fλ</span>
</span> to solve for the fundamental frequency leaves us with <span><span>f=<span>v/<span>2L</span></span></span>
</span> in an open ended pipe.
The answer is 10 m/s west.
Answer: 215.15 N
Explanation:
If we draw a free body diagram of the mass we will have the following:
(1)
(2)
Where 
is the tension force of the rope, 
the mass, 
the acceleration due gravity and 
is the weight.
On the other hand, we can calculate 
as follows:
Where 
and 
(3)
Now, we firstly need to find from (2):
(4)
(5)
Substituting (5) in (1):
(6)
Finally:
