Answer:
v = 13.79 m/s
Explanation:
given,
mass of ball = 110 g
height = 11 m
ball is released from = 1.3 m
minimum speed = ?
using conservation of energy
Potential energy is conserved in the form of kinetic energy
![P E =KE](https://tex.z-dn.net/?f=P%20E%20%3DKE)
![m g h= \dfrac{1}{2}mv^2](https://tex.z-dn.net/?f=m%20g%20h%3D%20%5Cdfrac%7B1%7D%7B2%7Dmv%5E2)
![v^2 = 2 g h](https://tex.z-dn.net/?f=v%5E2%20%3D%202%20g%20h)
![v=\sqrt{2 g h}](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B2%20g%20h%7D)
![v=\sqrt{2\times 9.8 \times (11-1.3)}](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B2%5Ctimes%209.8%20%5Ctimes%20%2811-1.3%29%7D)
![v=\sqrt{2\times 9.8 \times 9.7}](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B2%5Ctimes%209.8%20%5Ctimes%209.7%7D)
![v=\sqrt{190.12}](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B190.12%7D)
v = 13.79 m/s
Answer:
Period of brightness variation and luminosity.
Explanation:
The Cepheid variables are used as distance indicators. This requires estimation of periods and (usually) intensity-mean magnitudes in order to establish a period—apparent luminosity relation. It is particularly important for the techniques employed to be as accurate and efficient as possible.
That is the Sigma Symbol. It’s the addition of a sequence of numbers; the result is the sum of the total. if numbers are added sequentially from left to right, any intermediate result is a partial sum, prefix sum, or running total of the summation
Answer:
A copper wire current consists of electrons appropriately called conduction electrons.
Explanation:
This answer came from quizlet.com. I hope that this helps you and good luck!
Answer:corrosion (i believe)
Explanation: