A thin spherical shell of a 4.0 cm radius has a charge uniformly distributed on its surface. If the magnitude of the electric field at a point 10 cm radially outward from the center of the shell is 850 N/C, what is the surface charge density

the answer is b

explanation:

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

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

friction

explanation:

they us to move forward and backwards