Which actions will change an object’s weight, but not it’s mass? A. Breaking the object
B. Compressing the object
C. Immersing the object in water
D. Placing the object on a different planet
PLZ HELP

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

How are isotopes of the same element alike?

What is the difference between a substance "getting wet" and "being dissolved" in a liquid at the particulate level?