Question 4 In the diagram below, if q2 is positive then what sign is the charge

Question

Question 4 In the diagram below, if q2 is positive then what sign is the charge on q1 in order to produce the force required to cause the deflection in the string that supports q1? Question 5 In the question above, charge q is 1.9x10^-9C and charge q1 has mass 0.11g. The separation r is 4cm, and the angle theta is 15.8 degrees. Find q1 (magnitude and sign, you don?t need to enter a + for positive answers but you will need to enter a - if negative). Note: the answer for this question is very small and using scientific notation will help. This system uses E in place of xlO so for example to enter 3x10^-24 type 3E-24 in the answer box.

Explanation / Answer

force balance in Y direction for q1

T cos(15.8) = .11* 9.8

force balance in X direction for q1

T sin(15.8) = K (q1) *(1.9*10^-9)/ (.04)^2

devide eq. second by one, we get

(.04)^2 tan(15.8) = (q1)* 9*1.9

=> q1 = 0.00000863602 OR 8.63E-6 C

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.