The mass of lead = 22,939 kg
<h3>Further explanation</h3>Given
mass alcohol=1600 kg
The density of lead =11300kg\m³ and density of alcohol=790kg\m³
Required
mass of lead
Solution
the volume of lead=volume of alcohol=2.03 m, so the mass of lead :
Answer:
Required charge .
Explanation:
Given:
Diameter of the isolated plastic sphere = 25.0 cm
Magnitude of the Electric field = 1500 N/C
now
Electric field (E) is given as:
where,
k = coulomb's constant = 9 × 10⁹ N
q = required charge
r = distance of the point from the charge where electric field is being measured
The value of r at the just outside of the sphere =
thus, according to the given data
or
or
Required charge .
Now,
the number of electrons (n) required will be
or
or