During the collision between two balls on the pool table there is no external force along the line of collision between them
Since there is no external force on it so here we can say
![F = 0 = \frac{\Delta P}{\Delta t}](https://tex.z-dn.net/?f=F%20%3D%200%20%3D%20%5Cfrac%7B%5CDelta%20P%7D%7B%5CDelta%20t%7D)
here we have
![\Delta P = 0](https://tex.z-dn.net/?f=%5CDelta%20P%20%3D%200)
so we can say
![P_i = P_f](https://tex.z-dn.net/?f=P_i%20%3D%20P_f)
since there is no external force so we can say during the collision the momentum of two balls will remain conserved
<span>The bright, visible surface of the Sun is called corona. The outermost layer of the Sun's atmosphere is called chromosphere.</span>
Answer:
The additional trials needed is 48 trials
Explanation:
Given;
initial number of trials, n = 16 trials
the standard deviation, σ = 0.24 s
initial standard error, ε = 0.06 s
The standard error is given by;
![\epsilon = \frac{\sigma}{\sqrt{n} }](https://tex.z-dn.net/?f=%5Cepsilon%20%3D%20%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%20%7D)
To reduce the standard error to 0.03 s, let the additional number of trials = x
![0.03= \frac{0.24}{\sqrt{n+x} } \\\\0.03= \frac{0.24}{\sqrt{16+x} }\\\\0.03\sqrt{16+x} = 0.24\\\\\sqrt{16+x} = \frac{0.24}{0.03} \\\\\sqrt{16+x} = 8\\\\16+x = 8^2\\\\16+x = 64\\\\x = 64 -16\\\\x = 48 \ trials](https://tex.z-dn.net/?f=0.03%3D%20%5Cfrac%7B0.24%7D%7B%5Csqrt%7Bn%2Bx%7D%20%7D%20%5C%5C%5C%5C0.03%3D%20%5Cfrac%7B0.24%7D%7B%5Csqrt%7B16%2Bx%7D%20%7D%5C%5C%5C%5C0.03%5Csqrt%7B16%2Bx%7D%20%3D%200.24%5C%5C%5C%5C%5Csqrt%7B16%2Bx%7D%20%3D%20%5Cfrac%7B0.24%7D%7B0.03%7D%20%5C%5C%5C%5C%5Csqrt%7B16%2Bx%7D%20%3D%208%5C%5C%5C%5C16%2Bx%20%3D%208%5E2%5C%5C%5C%5C16%2Bx%20%3D%2064%5C%5C%5C%5Cx%20%3D%2064%20-16%5C%5C%5C%5Cx%20%3D%2048%20%5C%20trials)
Therefore, the additional trials needed is 48 trials.
Magnetic fields are an area around a magnetic material or a moving electric charge with which the force of magnet
Answer:
Yes, Mirror are a surface that reflects light more perfectly than ordinary objects.
Explanation: