What is the spring constant of a marble launcher that shoots a 0.0051 kg marble a height of 2.3 m above its muzzle assuming it is angled at 62° above the horizontal? the marble compressed the spring 0.080 m before being released.

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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.

Electric force between two charged object varies inversely as the square of distance between them (coulomb's law). this means if two charged objects move away force between them decreases.

Answer   perpendicular to the wave motion