Which is more; the energy needed to raise the temperature of 1kg of water from 20°C to 100°C or the energy needed to boil 1 kg of water at 100°C. Specific heat capacity of water = 4200 J/(kg 0C) Specific latent heat of vaporization of water = 2300 000 J/kg.[Show calculations]

prolly a beacuse the momentuem the car has increases while going down hill

a electromagnetic waves

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.