The United States spends over $20 billion a year on space exploration through NASA. Do you think that this has been worth the co
1 answer:
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Answer:
644 W/m²
0 W/m²
Explanation:
= Initial intensity of light = 1288 W/m²
= Angle of filter
Intensity of light is given by
The intensity of the transmitted light is 644 W/m²
The intensity of the transmitted light is 0 W/m²
We have two forces acting on the particle: the weight of the particle, downward, with intensity W=mg, and the Coulomb's force due to the electric field, with intensity F=qE.
In order to keep the particle in equilibrium, F must point upward. The direction of F depends on the sign of the charge. The electric field's direction is downward, so if we want F to point upward, the charge q must have negative sign.
Then, to find the magnitude of the charge, we should require that the intensity of the two forces acting on the particle is equal:
from which we find q:
In order to keep the particle in equilibrium, F must point upward. The direction of F depends on the sign of the charge. The electric field's direction is downward, so if we want F to point upward, the charge q must have negative sign.
Then, to find the magnitude of the charge, we should require that the intensity of the two forces acting on the particle is equal:
from which we find q: