Answer: 0.1 m, 0.0583 m
Explanation:
We are given that:
Frequency for throat= 800 Hz
Frequency for mouth= 1500 Hz
Sound speed= 350 m/s
We have to find the corresponding lengths.
We have
f= ![\frac{v}{4L}](https://tex.z-dn.net/?f=%5Cfrac%7Bv%7D%7B4L%7D)
or L=![\frac{v}{4f}](https://tex.z-dn.net/?f=%5Cfrac%7Bv%7D%7B4f%7D)
For the throat= L=
= 0.1 m
For the mouth= L=
= 0.0583 m
Answer:
Volcanic lightning is created when a volcano erupts and lots of tiny fine particles of volcanic ash form a cloud. Friction between the particles of ash and the gases emitted from the eruption cause differentces that create lightning. Friction between the particles of ash and the gases emitted from the eruption cause differentces that create lightning. The lightning usually occurs between clouds and from the eruption column to the crater.
Explanation:
please mark brainliest if this helped :)
For a box with a total surface area of 1.2 m2, the thermal conductivity of the insulating material is mathematically given as
k=5.29*19^{-6} kcal/(s oC m)
<h3>What is the thermal conductivity of the insulating material?</h3>
Generally, the equation for the is mathematically given as
P=Ka dT/L
Therefore
k=10*4*10^{-2}/1.2*1.5
k=5.29*19^{-6} kcal/(s oC m)
In conclusion, the thermal conductivity
k=5.29*19^{-6} kcal/(s oC m)
Read more about Energy
brainly.com/question/13439286
- Displacement =0(As it came back to initial position.
Distance=Perimeter of rectangle.
![\\ \rm\longmapsto 2(L+B)](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Clongmapsto%202%28L%2BB%29)
![\\ \rm\longmapsto2(3+5)](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Clongmapsto2%283%2B5%29)
![\\ \rm\longmapsto 2(8)](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Clongmapsto%202%288%29)
![\\ \rm\longmapsto 16m](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Clongmapsto%2016m)
Let the salmon jump with speed v at an angle of 33.3 degree
So here we can find out the components of his velocity in x and y direction
![v_x = v cos33.2](https://tex.z-dn.net/?f=v_x%20%3D%20v%20cos33.2)
![v_y = v sin33.2](https://tex.z-dn.net/?f=v_y%20%3D%20v%20sin33.2)
now the horizontal displacement of the salmon is 3.15 m so he cover this horizontal distance with constant speed as there is no acceleration in x direction
here we can say
![v_x * t = 3.15](https://tex.z-dn.net/?f=v_x%20%2A%20t%20%3D%203.15)
![v cos33.2 * t = 3.15](https://tex.z-dn.net/?f=v%20cos33.2%20%2A%20t%20%3D%203.15)
![v*t = 3.76](https://tex.z-dn.net/?f=v%2At%20%3D%203.76)
now in Y direction it is an accelerated motion as it is accelerated due to gravity
![y = v_y * t + \frac{1}{2}at^2](https://tex.z-dn.net/?f=y%20%3D%20v_y%20%2A%20t%20%2B%20%5Cfrac%7B1%7D%7B2%7Dat%5E2)
![-0.45 = v sin33.2* t - \frac{1}{2}*9.8* t^2](https://tex.z-dn.net/?f=-0.45%20%3D%20v%20sin33.2%2A%20t%20-%20%5Cfrac%7B1%7D%7B2%7D%2A9.8%2A%20t%5E2)
now we will plug in v*t = 3.76
![-0.45 = 3.76 * sin33.2 - 4.9 * t^2](https://tex.z-dn.net/?f=-0.45%20%3D%203.76%20%2A%20sin33.2%20-%204.9%20%2A%20t%5E2)
![4.9 t^2 = 2.51](https://tex.z-dn.net/?f=4.9%20t%5E2%20%3D%202.51)
![t^2 = 0.512](https://tex.z-dn.net/?f=t%5E2%20%3D%200.512)
![t = 0.72 s](https://tex.z-dn.net/?f=t%20%3D%200.72%20s)
now speed v is given by equation above
![v*t = 3.76](https://tex.z-dn.net/?f=v%2At%20%3D%203.76)
![v*0.72 = 3.76](https://tex.z-dn.net/?f=v%2A0.72%20%3D%203.76)
![v = 5.25 m/s](https://tex.z-dn.net/?f=v%20%3D%205.25%20m%2Fs)
so here he must have to jump with minimum speed of 5.25 m/s