Scientific calculator allowed | Kassia King Appl-ELECTROSTATICS: QUESTION 2 A pr

Question

Scientific calculator allowed | Kassia King Appl-ELECTROSTATICS: QUESTION 2 A proton and an electron are released from rest, with only the electrostatic force acting. Which of the following statements must be true about them as they move toward each other? (There could be more than one correct choice.) Choose all that apply ? Ther okotric potential energy keeps ncreasing. Ther acceleration keeps decreasing Their electric potential energy keeps decreasing Their kinesic energy keeps increasing Their kinetic energy keeps decreasing ? 3 4)568 (10 DII

Explanation / Answer

a) true,

electric potential energy is given by

U= k(q1)(q2)/r

on decreasing r, potential energy increases considerably.

b) false,

F= k(q1)(q2)/r^2

ma= k(q1)(q2)/ r^2

a= k(q1)(q2)/(m*r^2)

on decreasing r, value of acceleration increases.

c) false

d) true, on increasing acceleration, velocity increases hence kinetic energy increases with a squaring power of velocity.

e) false.

comment in case any doubt..goodluck

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