A certain lever has a mechanical advantage of 5.5 how heavy of a load could the lever lift with a input force of 20.0 N

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

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

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.

gravitational energy

electrical energy

kinetic energy

ligh energy