This problem concerns the properties of circular orbits for a satellite of mass m orbiting a planet of mass m in an almost circular orbit of radius r. in doing this problem, you are to assume that the planet has an atmosphere that causes a small drag due to air resistance. "small" means that there is little change during each orbit so that the orbit remains nearly circular, but the radius can change slowly with time. the following question will ask about the net effects of drag and gravity on the satellite's motion, under the assumption that the satellite's orbit stays nearly circular. use g if necessary for the universal gravitational constant. consider the work done on the system a. increase b. decrease c. stay the same d. vary in a more complex way than is listed here

The answer is trial 3.

Answer: a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same sign as the  -4.0  µc charge.======electricstatic force between two point charges  is given by    where k is coulomb's constant,  8.99×10⁹  n·m²/c², q₁ and q₂ are the point charges, and r is the distance between the two point charges.assign positive to q₁let q₁ =  6.0 µc, q₂ = -4.0  µc, q₀ represent the charge at the origin, and q₃ represent this new charge to place.the charge at the origin q₀ would experience the following force f₀₁ from q₁, with r = 6.0 m (note that 1  µc = 10⁻⁶ c)    the force from q₂    the force from q₃    the net force on the origin charge, q₀, has to be zero for no electrostatic forcehaving an equation where k and q₀ can be divided out of the equation will allow us to solve for q₃    isolating:     a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same as the  -4.0  µc charge

The best answer i can think of is b