Answer:
891 excess electrons must be present on each sphere
Explanation:
One Charge = q1 = q
Force = F = 4.57*10^-21 N
Other charge = q2 =q
Distance = r = 20 cm = 0.2 m
permittivity of free space = eo =8.854×10−12 C^2/ (N.m^2)
Using Coulomb's law,
F=[1/4pieo]q1q2/r^2
F = [1/4pieo]q^2 / r^2
q^2 =F [4pieo]r^2
q = r*sq rt F[4pieo]
q=0.2* sq rt[ 4.57 x 10^-21]*[4*3.1416*8.854*10^-12]
q = 1.42614*10^ -16 C
number of electrons = n = q/e=1.42614*10^ -16 /1.6*10^-19
n =891
891 excess electrons must be present on each sphere
The answer of this question is called uplift i.e the rising of rock layers in geology is called uplift.
Uplift is the process in which there will be vertical elevation of earth surface due to various natural processes occurring inside the surface of earth like earth quakes. Sometimes uplift is also caused by the mountain building which hampers the balance of a particular region.
In the process of uplift,the rocks normally metamorphic rocks present underground will be brought up to the earth surface.The enhanced elevation will cause erosion of lot of materials on the surface of earth.
Answer:
The angle from the vertical is 48.72°
Explanation:
Given :
Length of rope 
m
Mass of man 
Kg
Mass of car 
Kg
Velocity of car 
According to conservation law,
Potential energy of man is converted to kinetic energy of car moving,
We calculate height,
( ∵ 
)
m
This is the distance of the rope at the bottom,
So we take difference of it.
⇒ 
We can calculate angle between them,
48.72°
Therefore, the angle from the vertical is 48.72°
What do radio waves and microwaves have in Common?
<u>A) Both are at the ideological the spectrum that has the lowest frequency. </u>
B) Both are at the spectrum that has the shortest wavelengths.
C) Both have higher frequencies than visible light.
