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compare and contrast electromagentic and gravitational force. you need to provide two ways that they are alike and two ways that they are different.

Explanation:

Electromagnetic and gravitational forces have equations that clearly describe them.

Electromagnetic      Fe = K q₁ q₂ / r²

Gravitational            Fg = G m₁ m₂ / r²

Analyzing these expressions a bit we can see some things in which they are EQUAL:

    • They depend on the inverse of the squared distance

    • They are long range, they become zero In the infinite

    • They are proportional to a system constant, in one case the charge and in the other the mass

We can also observe some DIFFERENCES:

     • Gravitational always attractive, the electric can be attractive or repulsive depending on the charge

    • When we calculate their magnitudes the electric force in 10 40 times greater than the gravitational

    * The electric force can be zero if the charge is zero, the gravitational force can never be zero

the answer is b, have negligible mass