Answer: ![278\ Hz](https://tex.z-dn.net/?f=278%5C%20Hz)
Explanation:
Given
Distance between two speakers is 8 m
Man is standing 12 away from the wall
When the person moves 3 parallel to the wall
the parallel distances from the speaker become 4+3, 4-3
Now, the difference of distances from the speaker is
![\Delta d=\sqrt{12^2+(4+3)^2}-\sqrt{12^2-(4-3)^2}\\\Delta d=1.85\ m](https://tex.z-dn.net/?f=%5CDelta%20d%3D%5Csqrt%7B12%5E2%2B%284%2B3%29%5E2%7D-%5Csqrt%7B12%5E2-%284-3%29%5E2%7D%5C%5C%5CDelta%20d%3D1.85%5C%20m)
Condition for destructive interference is
![\Delta d=(2n-1)\dfrac{\lambda }{2}=(2n-1)\dfrac{\nu }{2f}\\\\\Rightarrow f=(2n-1)\dfrac{v}{2\Delta d}](https://tex.z-dn.net/?f=%5CDelta%20d%3D%282n-1%29%5Cdfrac%7B%5Clambda%20%7D%7B2%7D%3D%282n-1%29%5Cdfrac%7B%5Cnu%20%7D%7B2f%7D%5C%5C%5C%5C%5CRightarrow%20f%3D%282n-1%29%5Cdfrac%7Bv%7D%7B2%5CDelta%20d%7D)
for second destructive interference; n=2
![\Rightarrow f=(2\times 2-1)\dfrac{343}{2\times 1.85}=278.10\approx 278\ Hz](https://tex.z-dn.net/?f=%5CRightarrow%20f%3D%282%5Ctimes%202-1%29%5Cdfrac%7B343%7D%7B2%5Ctimes%201.85%7D%3D278.10%5Capprox%20278%5C%20Hz)
Answer:
Mercury
Explanation:
Mercury streches when it is hot so that is why it goes up when the temperature is higher
Answer:
nutrients
Explanation:
Nutrients are matter that organisms require for their life processes.
Answer: 5,640 s (94 minutes)
Explanation:
the tangential speed of the HST is given by
(1)
where
is the length of the orbit
r is the radius of the orbit
T is the orbital period
In our problem, we know the tangential speed:
. The radius of the orbit is the sum of the Earth's radius and the distance of the HST above Earth's surface:
![r=6.38\cdot 10^6 m+569,000 m=6.95\cdot 10^6 m](https://tex.z-dn.net/?f=r%3D6.38%5Ccdot%2010%5E6%20m%2B569%2C000%20m%3D6.95%5Ccdot%2010%5E6%20m)
So, we can re-arrange equation (1) to find the orbital period:
![T=\frac{2 \pi r}{v}=\frac{2 \pi (6.95\cdot 10^6 m/s)}{7,750 m/s}=5,640 s](https://tex.z-dn.net/?f=T%3D%5Cfrac%7B2%20%5Cpi%20r%7D%7Bv%7D%3D%5Cfrac%7B2%20%5Cpi%20%286.95%5Ccdot%2010%5E6%20m%2Fs%29%7D%7B7%2C750%20m%2Fs%7D%3D5%2C640%20s)
Dividing by 60, we get that this time corresponds to 94 minutes.
Answer:
5.en
6.ex
7.ex
8.en
Explanation:
<h3>#CARRY ON LEARNING</h3><h3>#BRAINLITS </h3>