What are the effects of a temporary increase in government purchases on the real interst rate, aggregate output, employmnet, the real wage, consumption and investment?

What are the effects of a decrease in the current capital stock on the real interest rate, aggregate output, employment, the real wage, consumption and investment?

What are the effects of an increase in current total factor productivity on the real interest rate, aggregate output, employment, the real wage, consumption and investment? Explain how these results relate to key business cycle facts and the potential causes of business cycles.