Answer:
E= 71dB
Explanation:
See attached file for step by step calculation
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 ![l=18 m](https://tex.z-dn.net/?f=l%3D18%20m)
(3)
Now, we firstly need to find
from (2):
(4)
![T=\frac{(28 kg)(9.8 m/s^{2})}{sin(51.9\°)}](https://tex.z-dn.net/?f=T%3D%5Cfrac%7B%2828%20kg%29%289.8%20m%2Fs%5E%7B2%7D%29%7D%7Bsin%2851.9%5C%C2%B0%29%7D)
(5)
Substituting (5) in (1):
(6)
Finally:
It obeys law because the physics of quantum space are so slow and small it’s actually really fast
Wavelength = (speed) / (frequency)
= (3 x 10⁸ m/s) / (1 x 10⁸ /s) = 3 meters
I would say B, false, because something that is biodegradable is an object or dead organism that can be degraded by a living thing near it. Since a compost pile is not a living thing and the question does not give any additional information about organisms near the leaf, I would say this is false.