What happens when a positively charged object is placed within a positive electric field

Positive charge will move in the direction of positive electric field

Explanation:

As we know that electric field is defined as the force experienced by the unit positive charge.

now when we will place a positive charge in this field then that positive charge will experience an electric force on  it

This force is given by

so here this positive charge will move in the direction of electric field direction

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west