# Answer to Question #51633 in Other Chemistry for samuel

Question #51633

1. What are the dimensions of the constant k in Coulomb’s law of electrostatics?

a.ML2T−4 T−2 A−1

b. ML2T3A−2

c. M −2 L3T2A−1

d. ML3T−4 A−2

2 Two charges Q 1 =500μC and Q 2 =100μC are located on the XY plane at the positions r 1 =3j ⃗ m and r 2 =4i ⃗ m. Find the force exerted on the Q 2

a. 14.4i ⃗ +10.8j ⃗ N

b. 14.4i ⃗ –10.8j ⃗ N

c. 10.8i ⃗ –14.4j ⃗ N

d. 10.8i ⃗ +14.4j ⃗ N

a.ML2T−4 T−2 A−1

b. ML2T3A−2

c. M −2 L3T2A−1

d. ML3T−4 A−2

2 Two charges Q 1 =500μC and Q 2 =100μC are located on the XY plane at the positions r 1 =3j ⃗ m and r 2 =4i ⃗ m. Find the force exerted on the Q 2

a. 14.4i ⃗ +10.8j ⃗ N

b. 14.4i ⃗ –10.8j ⃗ N

c. 10.8i ⃗ –14.4j ⃗ N

d. 10.8i ⃗ +14.4j ⃗ N

Expert's answer

1. The dimensions of theconstant k in Coulomb’s law of electrostatics is: b) ML2T3A−2.

2. Q

^{}2. Q

_{2}= 14.4i +10.8j N
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