Two identical point charges of +Q are separated by a distance of 10cm I) calculate the work done per unit charge to bring up another charge from far away along a perpendicular bisector of the line joining two charges to the point Midway between the charges.

ii)if one of the charges in part(a)is charged from +Q to -Q, calculate the work done per unit charge to bring up a charge to the same position as above

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.

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

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.