Please I need help with my test Q8) An unknown charge on a conducting solid sphere of radius 10 cm. If the electric field
15 cm from the center of the sphere has the magnitude 3.0 X 103 N/C and is directed
radially in ward, what is the net charge on the sphere?​

they start with the same

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles