An open organ pipe is 0.6 m long and the speed of sound in air is 336 m/s.
What is the fundamental frequency?

co2reflects heat radiation back to earth buning coal and oil emits co2 globe warms

c) up is the direction the magnetic force is acting on the charge.

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.