a baseball is traveling (=20m/s) and us hit by a bat. it leaves the bat traveling (-30 m/s). What is the change in the velocity?
remember that direction is what makes velocity diffrent speed.
1 answer:
The change in velocity from 30 m/s north to 40 m/s south is a change of 70 m/s south
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Answer:
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Explanation:
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No. The correct one would be D .
Answer:(a)9.685 mm
(b)4.184 mm
Explanation:
Given
Wavelength of light ![(\lambda )=565nm \approx 565\times 10^{-9}m](https://tex.z-dn.net/?f=%28%5Clambda%20%29%3D565nm%20%5Capprox%20565%5Ctimes%2010%5E%7B-9%7Dm)
Width of slit(b)=0.210
(a)Width of central maximum located 1.80m from slit
![=\frac{2\lambda L}{b}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B2%5Clambda%20L%7D%7Bb%7D)
![=\frac{2\times 565\times 10^{-9}\times 1.8}{0.210\times 10^{-3}}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B2%5Ctimes%20565%5Ctimes%2010%5E%7B-9%7D%5Ctimes%201.8%7D%7B0.210%5Ctimes%2010%5E%7B-3%7D%7D)
=9.685 mm
(b)Width of the first order bright fringe
![Y_1=\frac{\lambda \times L}{b}](https://tex.z-dn.net/?f=Y_1%3D%5Cfrac%7B%5Clambda%20%5Ctimes%20L%7D%7Bb%7D)
![Y_1=\frac{565\times 10^{-9}\times 1.8}{0.210\times 10^{-3}}](https://tex.z-dn.net/?f=Y_1%3D%5Cfrac%7B565%5Ctimes%2010%5E%7B-9%7D%5Ctimes%201.8%7D%7B0.210%5Ctimes%2010%5E%7B-3%7D%7D)
![Y_1=4.84mm](https://tex.z-dn.net/?f=Y_1%3D4.84mm)
Answer:
B. If isolated from a eukaryotic cell, mitochondria can no longer survive and reproduce on their own.
Explanation:
(m2-m1)/t
25-0/5
25/5
5m/s