Answer:
1/9 E0
Explanation:
The computation is shown below:
As we know that
where,
E = Electric field strength
k = Coulomb's constant
Q = charge on the sphere
r = distance from the center of the sphere
It is given that
The radius of the larger sphere is three times larger than that of the smaller sphere i.e
hence, the last option is correct
Answer:
41.16 m/s
Explanation:
Final velocity is equal to gravity multiplied by time; v = gt
Gravity is always 9.8 m/s/s (m/s^2), so
v = 9.8 * 4.2
v = 41.16