ObjectsA(+2charge),B(+3charge),C(-6 charge),D(-3charge),intersct are all conductors and make contact. What is final charge?.Where did electrons move?

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

Can someone me with my physics questions? i need correct answers only!

The ima of the following pulley system is