Problem A.2: Time Dilation (4 points) Because you are moving with an enormous speed, your mission from the previous Problem A. I will be influenced by the effects of time dilation described by special
relativity: Your Spaceship launches in June 2020 and returns back to tarth
directly after arriving at Sirus.
a) How many years will have passed from your perspective?
b) At which Earth date (year and month) will you arrive back to Earth?

Which of the following are not typically included in the periodic table? a. atomic mass b. element symbol c. isotopes d. number of electrons

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !

If water vapor with the mass of 35.0 grams is cooled and condensed into water in a closed system such as a closed glass jar, what is the mass of the water after the water vapor completely condenses? a) 34.5 grams b) 35.0 grams c) 35.5 grams d) the mass cannot be determined without knowing the volume