Answer:
Explanation:
Batteries convert chemical energy to electrical energy. Electric current is the flow of elections. Therefore, the first one is the correct answer.
Answer:
1.029
Explanation:
1.0090 can also be looked at as "1.009"
0.02 can also be looked at as "0.020"
I think of it as 20+9 which is 29. There for your answer should be 1.029. There are no measurement rules applying to this equation since they are both in centimeters. So you don't have to convert anything.
The energy stored in the spring is 2.25 J.
Given that the energy stored in a spiral spring is E = 1/2 k e^2
Where;
E = energy stored in the spring
k = force constant
e = extension
We can obtain the force constant as the slope of the graph;
k = 25 - 5/0.5 - 0.1
k = 20/0.4
k = 50 N/m
Substituting into the equation when e = 0.3,
E = 1/2 × 50 × (0.30)^2
E = 2.25 J
Learn more: brainly.com/question/10991960
Answer:
18 V
Explanation:
Let
r = Radius of pollen grain =
(general value)
E = Electric field = ![3\times 10^6\ N/C](https://tex.z-dn.net/?f=3%5Ctimes%2010%5E6%5C%20N%2FC)
Electric field is given by
![E=\dfrac{kq}{r^2}](https://tex.z-dn.net/?f=E%3D%5Cdfrac%7Bkq%7D%7Br%5E2%7D)
Voltage is given by
![V=\dfrac{kq}{r}](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7Bkq%7D%7Br%7D)
![\dfrac{V}{E}=r\\\Rightarrow V=Er\\\Rightarrow V=3\times 10^6\times 6\times 10^{-6}\\\Rightarrow V=18\ V](https://tex.z-dn.net/?f=%5Cdfrac%7BV%7D%7BE%7D%3Dr%5C%5C%5CRightarrow%20V%3DEr%5C%5C%5CRightarrow%20V%3D3%5Ctimes%2010%5E6%5Ctimes%206%5Ctimes%2010%5E%7B-6%7D%5C%5C%5CRightarrow%20V%3D18%5C%20V)
The maximum voltage is 18 V
"Ocean waves" is the only example of mechanical waves on that list.
The other three choices are all electromagnetic waves.