Answer:
Y
Explanation:
by adding all the numbers
You could talk about how the planets spin around the sun, how the universe has galaxies, and we are in the milky way. Blue shift and red shift,etc?
Answer:
kE=0.0735 J
Explanation:
Given that
Radius ,R=10 cm = 0.1 m
Mass ,m= 3 kg
Angular speed ,ω = 3.5 rad/s
We know that moment of inertia for solid sphere given as
![I=\dfrac{2}{5}mR^2](https://tex.z-dn.net/?f=I%3D%5Cdfrac%7B2%7D%7B5%7DmR%5E2)
Kinetic energy
![KE=\dfrac{1}{2}I\omega^2](https://tex.z-dn.net/?f=KE%3D%5Cdfrac%7B1%7D%7B2%7DI%5Comega%5E2)
Now by putting the values
![KE=\dfrac{1}{2}\times \dfrac{2}{5}mR^2\times \omega^2](https://tex.z-dn.net/?f=KE%3D%5Cdfrac%7B1%7D%7B2%7D%5Ctimes%20%5Cdfrac%7B2%7D%7B5%7DmR%5E2%5Ctimes%20%5Comega%5E2)
![KE=\dfrac{1}{2}\times \dfrac{2}{5}\times 3\times 0.1^2\times 3.5^2\ J](https://tex.z-dn.net/?f=KE%3D%5Cdfrac%7B1%7D%7B2%7D%5Ctimes%20%5Cdfrac%7B2%7D%7B5%7D%5Ctimes%203%5Ctimes%200.1%5E2%5Ctimes%203.5%5E2%5C%20J)
kE=0.0735 J
Therefore the kinetic energy will be 0.0735 J
Answer:
The sine waves of the two waves should look the same.
Explanation:
The sine wave formula for a sound wave is given as
y = A sin[2πft + θ]
where
y = The displacement of the wave at time t.
A = amplitude or maximum displacement of the wave during its progression.
t = time
f = frequency of the wave
θ = phase angle/phase shift of the wave which is normally 0 for sound waves
From this information,
It is evident that it is the frequency and time that dictate the exact motion of the wave or behaviour of the waveform. The amplitude only dictates the extent of the wave.
And if the frequency of 2 waves A and B are similar, then even a very different Amplitude cannot change the fact that the two waves will behave similarly, have the same sine curve and have the same movements as the time of progression increases.
Even if the phase angle isn't zero, whatever it is, will not change the fact that the two waves will appear similar to each other, only separated by that phase angle.
Hence, the two waves will look very similar with only the amplitude that shows the extent of displacement, different.
Hope this Helps!!!
Answer:
Drawing the triangle:
H / x = tan 52.2 = 1.29
H / (4.6 - x) = tan 28.8 = .550
H = 1.29 x
H = .55 * 4.6 - .55 x
1.84 x = 2.53 combining equations
x = 1.38
4.6 - 1.38 = 3.22
Total base of triangle = 1.38 + 3.22 = 4.6
H / x = tan 52,2 = 1.29
H = 1.29 * 1.38 = 1.78 height of triangle
Check:
1.78 / 3.22 = tan 28.9
This agrees with the given value of 28.8