Nowadays, most of the walkie talkies ... and all R/C models ... operate in the "Family Radio Service" (FRS) band. That's 46-49 MHz. The wavelength is 6.12-6.52 meters.
Answer:
d=3.76 cm
Explanation:
Given that frequency ,f= 4.55 KHz
Speed of sound = 343 m/s
We know that for sound
C= f λ
Where C is the velocity of sound
f is the frequency
λ is the wavelength
So now by putting the values
C= f λ
343= 4550 λ
λ=7.53 cm
We know that for destructive phase the difference in phase is π so the difference in distance will be λ/2.
So distance ,d= λ/2.
d=7.53/2 cm
d=3.76 cm
So they will move at a distance of 3.76 cm to hear minimum intensity of sound.
Answer:
The magnitude of the net electric field inside the solution is 3.704 N/C
Explanation:
Given;
average drift speed, v = 3 x 10⁻⁷ m/s
mobility of the bromide ions, μ = 8.1 x 10⁻⁸ (m/s)(N/C)
The magnitude of the net electric field inside the solution is given by the equation below;

where;
E is the magnitude of the net electric field inside the solution
Substitute the given values and solve for E

Therefore, the magnitude of the net electric field inside the solution is 3.704 N/C
To convert to m/s, multiply by 5/18
35*(5/18)
= 9.72m/s