Срочно нужно решение 2 задания. Помогите пожалуйста, задание по физике

Asteady current of 1 ais flowing through a conducter calculate the number of electrons that flows through conductor in 1second

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?