2) Check all that apply. Give two examples of how the physicist in the previous question used simple machines.
He designed a lifting screw using the principle of the inclined plane.
He used a series of pulleys to move a ship onto the beach all by himself.
He used a series of pulleys to raise a Greek flag.
He designed a wedge with a new type of saw.
3) Select the best answer.
Galileo proved that all objects fall at the same

22. the effect of threshold braking is to a. cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

1. the responsibilities of the u.s. federal reserve system include overseeing the banking system and regulating the quantity of money in the economy setting the level of real interest rates working with congress to devise a financial plan for the country and execute the president's orders calculating and reporting the unemployment rate 2. to increase the supply of money when the economy is weak, the fed closes banks reduces inflation sells bonds buys bonds 3. the federal funds rate is the short-term interest rate that banks charge their best customers when borrowing banks earn on savings accounts with the fed banks charge each other when borrowing or lending to each other the fed charges banks when borrowing 4. when the fed increases the money supply and consequently lowers interest rates, the value of the dollar will rise by more in the market for foreign exchange, all else equal will fall, all else equal is not impacted by fed policy will rise, all else equal

When the communist, under mao, took control of china in 1949 they announced total support support for which country and its ideology?