A student places a block on a table and hangs one mass from the block. The student lets the block go and observes the block accelerate toward the end of the table where the mass was located. The student then
places the block on the table and hangs a second, larger mass from the opposite end of the block. The block
accelerates in the opposite direction from the first trial. What does this experiment demonstrate?
Answer

Why is permeable soil best for plants that need a lot of drainage?

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

What is the molar mass of ca(cio4)2