The diagram shows the electric field lines around two charges. based on the field lines, what is the best description of the charges of the charges? a. they are negative, and they repel b. the left is negative and the right is positive so they attract. c. the left is positive and the right negative, so they attract. d. they are positive, and they repel.

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Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

Aparticle with mass 1.81×10−3 kg and a charge of 1.22×10−8 c has, at a given instant, a velocity v⃗ =(3.00×104m/s)j^. what are the magnitude and direction of the particle’s acceleration produced by a uniform magnetic field b⃗ =(1.63t)i^+(0.980t)j^?