Asmall glass bead charged to 4.0 nc is in the plane that bisects a thin, uniformly charged, 10-cm-long glass rod and is 4.0 cm from the rod's center. the bead is repelled from the rod with a force of 940 μn. what is the total charge on the rod?

The total charge on the rod at the given electric field strength is .

The given parameters;

The electric field due to the total charge on the rod is calculated as follows;

The force experienced by the charged bead is calculated as;

Thus, the total charge on the rod at the given electric field strength is .

Learn more here:link

Explanation:

Electric field due to a finite wire at some distance "x" from it on its perpendicular bisector is given by the formula

so here we will have

now we know that

F = qE

we will have

so we will have

so total charge on the rod is given as

from 1609, galileo galilei used the recently invented telescope to observe the sun, moon and planets. he saw the mountains and craters of the moon, and for the first time revealed the planets to be worlds in their own right. galileo also provided strong observational evidence that planets orbited the sun.

his discoveries about the moon, jupiter's moons, venus, and sunspots supported the idea that the sun - not the earth - was the center of the universe, as was commonly believed at the time.galileo turned his gaze toward venus, the brightest celestial object in the sky - other than the sun and the moon.

think its the third option