Question

напряженность электрического поля на поверхности земли 130 в/м определите полный заряд земли ( Е=1, к=9*10^9 Н*м^2 \Кл , R= 6.4 * 10^6м.)

Answer 1

E=kq/R^2

q=ER^2\k

q=130(6.4 * 10^6)^2\9*10^9

q=4.5*10^-1

Answer 2

Calculating the Total Charge of the Earth

To calculate the total charge of the Earth given the electric field intensity at the Earth's surface, we can use the formula:

E = k * (Q / R^2)

Where: - E = electric field intensity at the Earth's surface (130 V/m) - k = Coulomb's constant (9 * 10^9 N*m^2/C^2) - Q = total charge of the Earth - R = radius of the Earth (6.4 * 10^6 m)

We can rearrange the formula to solve for the total charge Q:

Q = E * R^2 / k

Substituting the given values: Q = 130 * (6.4 * 10^6)^2 / (9 * 10^9)

Calculating the value: Q ≈ 5.79 * 10^11 C

Therefore, the total charge of the Earth is approximately 5.79 * 10^11 Coulombs.