A wave is produced in a Slinky as shown. An illustration of a horizontal spring with a hand holding the left end of the spring. Above the spring is labeled direction of wave travel with an arrow toward the right. In the spring are areas where the rings are closer together and areas where the rings are further apart. There is a point labeled P in an area where the rings are further apart.

What is the direction of the Slinky wire at Point P as the waves travel through this point?

A dot with a vector drawn right and a vector drawn left.
A dot vector drawn up and vector drawn down.
A dot with a vector drawn up to the right and a vector drawn down to the left.
A dot with a vector drawn up to the left and a vector drawn down to the right.

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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

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