What is the efficiency of a device that takes in 400 j of heat and does 120 j
of work while giving off 280 j of heat? use o
wiam

1/0.14nm = 10^10/1.4 a lot

answer(20) psi;

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.

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.