Answer:
113.7
Explanation:
maximum distance (s) = 8.9 km
reference intensity (I0) = 1 x 10^{-12} W/m^{2}
power of a juvenile howler monkey (p) = 63 x 10^{-6} W
distance (r) = 210 m
intensity (I) = power/area
where we assume the area of a sphere due to the uniformity of the output in all directions
area = 4π
= 4π x
= 554,176.9 m^{2}
intensity (I) = ![\frac{63 x 10^{-6} }{554,176.9} = 113.7 x 10^{-12}](https://tex.z-dn.net/?f=%5Cfrac%7B63%20x%2010%5E%7B-6%7D%20%7D%7B554%2C176.9%7D%20%3D%20113.7%20x%2010%5E%7B-12%7D)
therefore the desired ratio I/I0 =
= 113.7
(1) Doubling of the current through the wire will result in doubling of its magnetic field.
The magnetic field around a wire is a function of the current I and radial distance r
![B = \frac{\mu\cdot I }{2\pi r}](https://tex.z-dn.net/?f=B%20%3D%20%5Cfrac%7B%5Cmu%5Ccdot%20I%20%7D%7B2%5Cpi%20r%7D)
(with mu denoting the magnetic permeability of the medium). So, B is directly proportional to I. The field magnitude will double with the doubled current from 5A to 10A
(2) Using the same formula as in (1), we can see that the magnetic field is inversely proportional to the radial distance from the wire. So, a particle at 20cm will experience half the magnitude compared to a particle at 10cm.
(3) Answer
If a particle with a charge q moves through a magnetic field B with velocity v, it will be acted on by the magnetic force
![F_m = B\cdot v\cdot q](https://tex.z-dn.net/?f=F_m%20%3D%20B%5Ccdot%20v%5Ccdot%20q)
So, a particle with charge -2uC will experience a magnetic force of same magnitude but opposite direction (and perpendicular to B) as compared to a particle with a charge of 2uC
<span>You can follow the flow of energy in an ecosystem by following its food Chain or food web.
In short, Answers are:
1- Chain
2- Web
Hope this helps!</span>
As kinetic energy increases, substance temperature increases
Answer:
0-4 acceleration comes at 12 m/s where (B) stagnates at 12 m/s and remains for 4 seconds (C) is breaks being activated slowing the car to 6 m/s in 2 seconds and (D) over the course of 4 seconds brings the car to 10 m/s.
Explanation: