Stars and planets form when dust and gas from space is pulled together by.. what?
1 answer:
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Answer:
q = 3.6 10⁵ C
Explanation:
To solve this exercise, let's use one of the consequences of Gauss's law, that all the charge on a body can be considered at its center, therefore we calculate the electric field on the surface of a sphere with the radius of the Earth
r = 6 , 37 106 m
E = k q / r²
q = E r² / k
q =
q = 4.5 10⁵ C
Now let's calculate the charge on the planet with E = 222 N / c and radius
r = 0.6 r_ Earth
r = 0.6 6.37 10⁶ = 3.822 10⁶ m
E = k q / r²
q = E r² / k
q =
q = 3.6 10⁵ C
Explanation:
It is given that, the water from a fire hose follows a path described by equation :
........(1)
The x component of constant velocity,
We need to find the resultant velocity at the point (2,3).
Let and
Differentiating equation (1) wrt t as,
When x = 2 and
So,
Resultant velocity,
v = 6.4 m/s
So, the resultant velocity at point (2,3) is 6.4 m/s. Hence, this is the required solution.