Which has the greater mass1 kg lead or 1 kg feathers?

Y=‐1x + 7 if y has a value of ‐24 what is the value of x?

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

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