Capital as a factor of production refers to goods that are used to produce other goods and services. In the context of the provided options:
- Shares of stock in a corporation are financial assets and not considered capital in the production process.
- Steel and Aluminum used by a car manufacturer are examples of physical capital as they are materials used in the production of cars.
- Kitchen equipment for a new restaurant venture is also an example of physical capital as it is used in the production process of providing meals.
- Personal computers used by teenagers to do homework and keep in touch with friends are not considered capital in the production of goods or services.
Therefore, the examples of capital as a factor of production in the given options are:
1. Steel and Aluminum used by a car manufacturer
2. Kitchen equipment for a new restaurant venture
