A cell is a geographical area with a base tranceiver station at its center.
I would use a resistor rated for 1 W or more. Not less.
Kinetic Energy would have to be the answer. Pretty sure.
Answer:
a) E = -4.8 10⁻⁵ N / C
, b) E = 0
, c) E = 0
Explanation:
For this exercise let's use Gauss's law
Ф = E. dA = / ε₀
As a Gaussian surface we use a sphere, whereby the electric field lines are parallel to the normal area, and the scalar product is reduced to the algebraic product
a) the field for r = 30 cm
At this point we place our Gaussian surface and see what charge there is inside, which is the charge of the solid sphere (r> 20cm), the charge on the outside does not contribute to the flow
E = q_{int} / A ε₀
q_{int} = -4.8 10-16 C
The area of a sphere is
A = 4π R²
We replace
E = -4.8 10⁻¹⁶ / 4π 0.30² 8.85 10⁻¹²
E = -4.8 10⁻⁵ N / C
b) r = 45 cm
This point is inside the spherical conductor shell, as in an electric conductor in electrostatic equilibrium the charges are outside inside the shell there is no charge for which the field is zero
E = 0
c) R = 60 cm
This part is outside the two surfaces
The chare inside is
q_{int} = -4.8 10⁻¹⁶ + 4.8 10⁻¹⁶
q_{int} = 0
Therefore the electric field is
E = 0
Answer:
centripetal and of constant magnitude
Explanation:
The acceleration of an object traveling on a circular path at constant speed is directed towards the center of the circle (centripetal) and of constant magnitude equal to the square of the object's speed divided by the radius of the circle.