E9mitherdutumehwing E9mitherdutumehwing

13-10-2016
Mathematics

contestada

Two point charges of equal magnitude are
7.5 cm apart. At the midpoint of the line
connecting them, their combined electric field
has magnitude of 45 N/C. Find the magnitude
of the charges.

Respuesta :

HomertheGenius HomertheGenius

21-10-2016

q 1 = q 2 = Q
E = k * Q / r²
The combined electric field:
E = 2 * k * Q / r²
k = 9 · 10^9 Nm²/C²
r = 0.075 : 2 = 0.0375 m
45 N/C = 2 · 9 · 10^9 · Q / 0.0375²
45 = 18 · 10 ^9 Q / 0.0014062
Q = 45 · 0.0014062 / 18 · 10^9
Q = 0.003515 · 10^(-9) C
Q = 3.5155 · 10 ^ (-12) C = 3.5155 pC

Answer Link

Otras preguntas

4+9= equals whattttttttt

Question 3 of 3 Find the value of x. 0 O A. 90 O B. 70 O C. 20 OD. 50

HELP ME FAST pleaseeee thanks

What is the center of the circle for this equation: (x + 3)² + (y - 2)² = 25

What is the prefix of the easy

lucy is thinking of a 5 digit number The digit in the hundreds place is 7 The digit in the thousands place is the greatest possible digit The digit in the ones

Pretend that you are an unread book. You can not come alive unless or until someone "reads you". Convince your future readers that reading you is imperative and

Horse kg of grass in 12 days how much how much does he eat in 9 days

Entry to a certain University is determined by a national test. The scores on this test are known to be normally distributed with a mean of 725 and a standard d

ITS TUMMY PURRED LIKE AN OUTBOARD MOTOR AND IT BUTTED ITS HEAD AGAINST ISABELLA"S HAND IN BETWEEN BITES what figutive lanuguage is that simile,metaphor,personi