Alever has an effort arm that is 8 meters long and the resistance arm that is 1.5 meters long, how much effort is needed to lift 209 newton weight?

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.