Answer: 529.9 Hz
Explanation:
Here we need to use the Doppler equation, so we have:
f' = f*(v + v0)/(v - vs)
Here, f is the frequency = 500Hz
v is the velocity of the wave, = 334m/s
v0 is the velocity of the observer = 20m/s
vs is the velocity of the source = 0m/s
Then we have:
f' = 500Hz*(334m/s + 20m/s)/(334m/s) = 529.9 Hz
Answer:
<h2>14.55 m</h2>
Explanation:
The height of the hill can be found by using the formula
where
m is the mass
h is the height
g is the acceleration due to gravity which is 10 m/s²
From the question we have
We have the final answer as
<h3>14.55 m</h3>
Hope this helps you
The answer is A: the ball will roll faster and faster
Answer:
a). d=4.83m
b). d=3.876m
c). u=0.361
Explanation:
The blocks stops moving up the ramp when all the elastics Energy (Ek) in the spring has transfer to Energy gravity (Ep)
So using the law conservation of energy and in the motion
Energy Kinetic is the energy of the spring so 'K' is the force constant and xk is the distance the block compresses the spring and 'h' is the height for a ramp 60 angle so:
a).
Solving for 'd'
b).
Now the force of friction is acting so the Ep add the force
Get the factor to resolve d
c).
Finally if the distance of the rampo is knowing determinate the u coefficient of friction can be find
The velocity of the wave having a frequency of 458 Hz and a wavelength of 0.74 m is 338.92 m/s
<h3>Velocity of a wave </h3>
The velocity of a wave is related to its frequency and wavelength according to the following equation:
Velocity (v) = wavelength (λ) × frequency (f)
v = λf
<h3>How to determine the velocity of the wave</h3>
- Frequency (f) = 458 Hz
- Wavelength (λ) = 0.74 m
v = λf
v = 0.74 × 458
v = 338.92 m/s
Thus, the velocity of the wave is 338.92 m/s
Learn more about wave:
brainly.com/question/14630790