Mass of Weighing tray Mass of Weighing tray and solid
Volume of water
Volume of water and solid
1.75 g
191.558
50.0 ml
85.8 ml
find the density of the unknown solid

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other

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 !