The frequency of the wave has not changed.
In fact, the frequency of a wave is given by:
where v is the wave's speed and is the wavelength.
Applying the formula:
- In air, the frequency of the wave is:
- underwater, the frequency of the wave is:
So, the frequency has not changed.
Answer:
I believe the answer is B) Two wavelengths
Answer:
it helping
Explanation:
and helping aterials between a capacitors’ plates can change its capacitance
Answer:
Explanation:
- distance travelled by the sound,
- speed of sound in air,
- difference of time time between the two pulses of sound,
<em>Now, we find the time taken by the sound in air to travel the given distance:</em>
∴<u>Time taken by the sound sound waves in the metal bar to travel the given distance:</u>
<u>The speed of sound in the metallic bar:</u>
Answer:
1419.01436 N
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
The force on the car
Magnitude of the horizontal net force that is required to bring the car to a halt is 1419.01436 N