a body of mass 500g suspended from the end of the spiral spring which obeys hooks law, produce an extension of 10cm if the mass is pulled down a distance of 5cm and released, calculate the force constant of the spray, frequency, period of oscillation, angular speed of the body and energy system

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

your answer is c! hope this : )

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.