Exercise 4: Gas under 200 kPa of pressure at a temperature of 120 K fills a 0.5 L container. If the temperature decreases to 80 K but the pressure stays the same, what volume will the gas have? Please show works no answer thankies!

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of