Can somebody do me a favor and answer pt 2 of my project.. only answer if you know a bit about the topic and 30 point!

What are the theoretical properties of a gas at a temperature of 0 kelvin?

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?