(! 30 pts if answered right. )what formula gives the strength of an electric field, e, at a distance from a known source charge? e = startfraction f subscript e baseline over q times d endfraction. e = startfraction k times q over d endfraction. e = startfraction k times q over d superscript 2 baseline endfraction. e = startfraction f subscript e baseline over d endfraction.

Explanation:

The strength of an electric field E produced by a single charge Q at a distance d from it is given by the formula: , where K represents the Coulomb constant.

Since the electric field E is derived from the Coulomb Force per unit charge using a positive test charge, the field's units will be in units of Newtons/Coulomb, and be the formula for the Coulomb electric force between to charges (Q1 and Q2),

but modified with only one charge showing in the numerator of the expression.

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.