physics:

Question 6 10 pts A test charge of +1uC is placed halfway between a charge of +4.5pC and another of +7.4 pC separated by 10 cm. What is the magnitude of the force (in Newtons) on the test charge? Your answer should be a number with two decimal places, do not include the unit. Question 7 10 pts Point charges of 10.7 nC and 50.7 nC are placed 0.500 m apart. What is the electric eld halfway between them? Indicate direction by a positive or a negative value. Keep in mind that a positive vector is one directed to the right and a negative vector is one directed to the left. Your answer should be a positive or a negative number with two decimal places, do not include the unit. Hint: 1 nC = 10'9 C Question 8 10 pts Calculate the magnitude of the electric eld (in NC) at 3.2 m from a point charge of 6.8 pC. You should round the answer to an integer, indicate only the number, do not include the unit. Hint: luC = 10'6c