Question 2 What is the annual growth rate of real GDP per capita if real GDP per capita was $14,000 in 2010 and $28,000 in 2020? 10% 100% 7% 50% D Question 3 Which of the following is an example of physical capital? Engineering expertise on how to make steel. Furnaces and molds used to make steel. Software sold as a finished product. Business loans used to purchase raw materials. Question 4 1 pts Which of the following is an example of human capital? Innovative research that makes steel production more efficient. The total population of workers. Furnaces and molds used to make steel. Engineering expertise on how to make steel.