Wave is traveling at 60 cm/second and has a wavelength of 15 cm, what is the frequency?

answer; how far out of place which the object finished relative to the starting location;

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.