Answer:
Explanation:
Let E be the strength of electric field and m be the mass of plastic sphere.
charge on plastic sphere, q = - 3 n C = - 3 x 10^-9 C
The force due to electric field on the charged plastic sphere = q E
The weight of the plastic sphere = m g
where, g is the acceleration due to gravity.
Now the force due to electrostatic field is balanced by teh weight of the plastic sphere.
q E = m g
E = m g / q
E = m x 9.8 / (3 x 10^-9) = 3.26 x 10^9 x m
Substitute the value of m and get the value E.
Since the plant is falling, the gravitational energy decreases, so it means b) kinetic energy is increasing.
Hope this helps!! :)
The answer to this question is A."Characterizing soil color"
-I hope this is the answer you are looking for.
The percentage of railroad crossing crashes that results from a vehicle driving into the side of a train is 25%.
These crashes usually occur as the result of drivers intentionally circumventing warning equipment used at railroad crossings. Drivers typically used their senses to determine the proximity of the train and attempt to cross quickly rather than wait for the train to pass before crossing.