Explanation:
Since, it is given that one hand completes 3.19 vibrations in 8.46 sec. Therefore, in one second the number of vibrations will be as follows.
![\frac{3.19}{8.46}](https://tex.z-dn.net/?f=%5Cfrac%7B3.19%7D%7B8.46%7D)
= 0.377 vibrations
Hence, frequency (f) = 0.38 Hz
Now, formula to calculate the speed is as follows.
v = ![f \times \lambda](https://tex.z-dn.net/?f=f%20%5Ctimes%20%5Clambda)
or,
= ![\frac{0.6 cm/s}{0.38}](https://tex.z-dn.net/?f=%5Cfrac%7B0.6%20cm%2Fs%7D%7B0.38%7D)
= 1.57 cm
Thus, we can conclude that the wavelength is 1.57 cm.
Answer:
Diffusing the gradient ensures that most of the molecules in high concentration zone will wind up in the previously low concentration by the spontaneous movement of small molecules.
Explanation:
A gradient of concentration is the difference between in concentration of one place / area substance to different area. Having a molecule flow down its concentration gradient means moving the molecules from hypotonic areas to the concentration hypertonic areas
Diffusing the gradient ensures that most of the molecules in high concentration zone will wind up in the previously low concentration by the spontaneous movement of small molecules.
As we know the formula of kinetic energy is
![KE = \frac{1}{2} mv^2](https://tex.z-dn.net/?f=KE%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20mv%5E2)
here given that
KE = 150,000 J
mass = 120 kg
we can use this to find speed
![150,000 = \frac{1}{2} * 120 * v^2](https://tex.z-dn.net/?f=150%2C000%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20%2A%20120%20%2A%20v%5E2)
![v^2 = 2500](https://tex.z-dn.net/?f=v%5E2%20%3D%202500)
![v = 50 m/s](https://tex.z-dn.net/?f=v%20%3D%2050%20m%2Fs)
So speed of above object is 50 m/s
Answer:
-0.01052 m/s
Explanation:
M = mass of ship = ![5.75\times 10^7\ kg](https://tex.z-dn.net/?f=5.75%5Ctimes%2010%5E7%5C%20kg)
m = mass of shell = 1100 kg
v = velocity of shell = 550 m/s
u = recoil velocity of ship
As linear momentum is conserved
![(M - m)u=-mv\\\Rightarrow u=-\frac{mv}{M - m}\\\Rightarrow u=-\frac{1100\times 550}{5.75\times 10^7+1100}\\\Rightarrow u=-0.01052\ m/s](https://tex.z-dn.net/?f=%28M%20-%20m%29u%3D-mv%5C%5C%5CRightarrow%20u%3D-%5Cfrac%7Bmv%7D%7BM%20-%20m%7D%5C%5C%5CRightarrow%20u%3D-%5Cfrac%7B1100%5Ctimes%20550%7D%7B5.75%5Ctimes%2010%5E7%2B1100%7D%5C%5C%5CRightarrow%20u%3D-0.01052%5C%20m%2Fs)
The recoil velocity of the ship taking the firing direction to be the positive direction is -0.01052 m/s
Answer:
electromagnetic wave i think
Explanation: