Answer:
Explanation:
v² = u² + 2as
s = (v² - u²) / 2a
s = (29.88² - 6.73²) / (2(5.22))
s = 81.1802203065...
s = 81.18 m
Answer:
![v = 4.7 m/s](https://tex.z-dn.net/?f=v%20%3D%204.7%20m%2Fs)
Explanation:
As we know that the ball is swinging in a circle
so here net horizontal centripetal force on the ball is due to component of the tension force
so we will have
![T sin\theta = m\omega^2 r](https://tex.z-dn.net/?f=T%20sin%5Ctheta%20%3D%20m%5Comega%5E2%20r)
![T cos\theta = mg](https://tex.z-dn.net/?f=T%20cos%5Ctheta%20%3D%20mg)
also we know that
![T = Mg](https://tex.z-dn.net/?f=T%20%3D%20Mg)
so we have
![Mg cos\theta = mg](https://tex.z-dn.net/?f=Mg%20cos%5Ctheta%20%3D%20mg)
![\theta = \frac{1}{2}](https://tex.z-dn.net/?f=%5Ctheta%20%3D%20%5Cfrac%7B1%7D%7B2%7D)
![\theta = 60 degree](https://tex.z-dn.net/?f=%5Ctheta%20%3D%2060%20degree)
now we have
![Mg sin\theta = m\omega^2 (Lsin\theta)](https://tex.z-dn.net/?f=Mg%20sin%5Ctheta%20%3D%20m%5Comega%5E2%20%28Lsin%5Ctheta%29)
![Mg = m\omega^2 L](https://tex.z-dn.net/?f=Mg%20%3D%20m%5Comega%5E2%20L)
![2 \times 9.81 = 1 \omega^2 (1.5)](https://tex.z-dn.net/?f=2%20%5Ctimes%209.81%20%3D%201%20%5Comega%5E2%20%281.5%29)
![\omega = 3.62 rad/s](https://tex.z-dn.net/?f=%5Comega%20%3D%203.62%20rad%2Fs)
now we have
![v = r\omega](https://tex.z-dn.net/?f=v%20%3D%20r%5Comega)
![v = (1.5 sin60) (3.62)](https://tex.z-dn.net/?f=v%20%3D%20%281.5%20sin60%29%20%283.62%29)
![v = 4.7 m/s](https://tex.z-dn.net/?f=v%20%3D%204.7%20m%2Fs)
Rather than reflecting, most sunlight that reaches the ocean's surface passes directly into the ocean. As the light travels through the ocean, it is absorbed and scattered by molecules and particles. Water absorbs light faster when the wavelength is long and the energy is low.
Answer:
Yes,the law of conservation of momentum is satisfied.The momentum before the collision is 1.5 kg.m/s and the total momentum after the collision is 1.5kg.m/s.The momentum before and after the collision is the same.
Sublimation is the changing of a solid directly to a gas without turning into a liquid first. Where as vaporization is the liquid turning into a gas.