Two charges Q1= -48 µC and Q2= -21 µC are placed on the two corners of a square as shown in the figure below. If the side length of the square is a=48 mm, how much work is required to bring a third charge, Q3= -28 µC from infinitely far away to the empty bottom-right corner of the square? Please take k = 9.0 x 109 N.m2/c2 and express your answer using one decimal place in units of J or N.m. Please do not forget to type the minus sign if you got a negative value. Q1 а а a Q2 а

A homemade capacitor is assembled by placing two 8-in. pie pans 6 cm apart and connecting them to the opposite terminals of a 9-V battery. Part A Estimate the capacitance. Express your answer using one significant figure. 国 C = 5.74 • 10 - 10 F Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining

Сopy of Two charges Q1=24µC and Q2=-41µC are placed on a semi-circle with a radius R=14mm as shown in the figure below. How much work must be done to bring a third charge Q3--5µC from infinity to point P. Express your answer in units of Joules using zero decimal places. Take Coulomb constant as k=9.0x10° N.m2/c2. Please do not forget the minus sign if your answer is negative. Q2 R Q1 R

Part A Consider an initial system of three charges shown in (Figure 1). An object with charge q4 = + 8.0 × 10–8 C will be moved to position C from infinity (not shown in the figure). Part B qi = q2 = q3 = +10.0 × 10-8 C. Part C Part D -9 Determine the work done on the system by moving the charge q4 from infinity to point C, but for q1 = q3 = -10.0 × 10º C and q2 = +10.0 × 10 º C. Express your answer with the appropriate units, to two significant figures. HA ? Figure 1 of 1 W' = Value Units Submit Request Answer 20.0 cm Provide Feedback 92 20.0 cm C 20.0 cm 93

The three q1=q2=q3 = 14 μC charges came into the arrangement shown below from very far apart. q1 is located at (0.00, 5.2) cm, q2 is located at (0.00, -5.2) cm and q3 located at (13.26, 0.00) cm a) How much work must be done to move the three charges into the arrangement shown if they started very far apart?  b) What is the work if the particle on the right, q3, with mass 49.5 g, is released from rest and allowed to move freely to point P, twice 13.26 distance, figure below? c) How fast, in m/s, is q3 moving when it has moved to point P, twice 13.26 distance? To continue, please submit the result of part (c) in units of m/s.   Round your answer to 0 decimal places.

You Answered Correct Answer A line of charge is placed along the negative x axis from x=-0.4m to x=0. The charge is uniformly distributed with linear charge density 3.06pC/m. A proton is released from rest at a point on the positive x axis 2.53m. When the proton has a speed of 472.1m/s, how far will it have moved (in m}? 1.0975 margin of error +/-1%

Two large parallel copper plates are 7.39 cm apart and have a uniform electric field of magnitude E = 3.44 N/C between them (see the figure). An electron is released from the negative plate at the same time that a proton is released from the positive plate. Neglect the force of the particles on each other and find their distance from the positive plate when they pass each other. Positive Negative plate plate P E Number i Units

The shaded region in the diagram below is a region of uniform electric field that is parallel to the horizontal direction (x-axis). A charge =-4.3 µC moves through this region as shown by the green arrow. A B. (a) If the charge accelerates as it moves from A to B, what is the direction of the electric field in this region? to the left O to the right (b) The work done by the electric field as the charge moves from location A to location B is +2.50 x 10 J. What is the potential difference V. - V,? V