The period T of a pendulum is given by:
![T=2 \pi \sqrt{ \frac{L}{g} }](https://tex.z-dn.net/?f=T%3D2%20%5Cpi%20%20%5Csqrt%7B%20%5Cfrac%7BL%7D%7Bg%7D%20%7D%20)
where L is the length of the pendulum while
![g=9.81 m/s^2](https://tex.z-dn.net/?f=g%3D9.81%20m%2Fs%5E2)
is the gravitational acceleration.
In the pendulum of the problem, one complete vibration takes exactly 0.200 s, this means its period is
![T=0.200 s](https://tex.z-dn.net/?f=T%3D0.200%20s)
. Using this data, we can solve the previous formula to find L:
Answer:
![= \frac{(115^2)(\sin 30)^2}{2\times 9,8} \\\\= 168.7m](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%28115%5E2%29%28%5Csin%2030%29%5E2%7D%7B2%5Ctimes%209%2C8%7D%20%5C%5C%5C%5C%3D%20168.7m)
Therefore, highest point that the cannon ball reaches is 168.7m
Explanation:
the cannon is fired at an angle 30 o to the horizonatal with a speed of 155 m/s
highest point that the cannon ball reaches?
![H_{max}=\frac{V^2\sin ^2 \theta}{2g}](https://tex.z-dn.net/?f=H_%7Bmax%7D%3D%5Cfrac%7BV%5E2%5Csin%20%5E2%20%5Ctheta%7D%7B2g%7D)
g = 9.8m/s2
![= \frac{(115^2)(\sin 30)^2}{2\times 9,8} \\\\= 168.7m](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%28115%5E2%29%28%5Csin%2030%29%5E2%7D%7B2%5Ctimes%209%2C8%7D%20%5C%5C%5C%5C%3D%20168.7m)
Therefore, highest point that the cannon ball reaches is 168.7m
<h3><u>Answer;</u></h3>
A. Their bodies will move forward.
<h3><u>Explanation</u>;</h3>
- <em><u>When a train or a bus comes to a sudden stop everything including the passengers that is not directly attached to the train or the vehicle will tend to continue in the direction of travel, thus the bodies of the passengers will move forward.</u></em>
- This is<em><u> due to the forces of inertia.</u></em> From the second Newton's law of motion, a body will main at its state of rest or constant speed unless acted upon by an unbalanced external force.
- <em><u>When the train suddenly stops the tendency of inertia of motion of the passengers results in the forward motion throwing them from their seats.</u></em>
This can be seen through the fact that Aksionov has the ability to seek his own justice many times throughout the story, yet does not take it
"In nuclear reactions, mass is converted to energy" is the statement that <span>explains why more energy is released in nuclear reactions than in chemical reactions. The correct option among all the options that are given in the question is the last option or option "D". I hope the answer has come to your help.</span>