How much energy is needed to raise the temperature of 2.3 kg of aluminum from 5 °C to 15 °C? The specific heat capacity of aluminum is 897 J/kg°C. 20.631)
-20.631
39.78
39.783

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.