Nan is rubbing a rock on the sidewalk. The rock gets smaller, and

dust is formed. Which type of change is happening?

O a change of state

O physical weathering

chemical weathering

O a new substance being formed

The formula below gives V, the velocity in feet per second of a falling object t seconds after it has been dropped. V (t) = 32t If a piano is dropped off a cliff, how fast will it be falling after 4 seconds? A. 64 feet per second B.

The site of protein synthesis is

Unresolved dissonance is a characteristic of:

Your heart pumps 80 g of blood with each beat. The blood starts from rest and reaches a speed of 0.60 m/s in the aorta. If each beat takes 0.16 s, the average force exerted on the blood is a. 3.0" 102 N b. 0.22 N c. 0.16 N d. 0.30 N e. 0.98 N

Biotic parts of an ecosystem interact with

Find velocity gradient

In equation y = mx means what

Sea anemones can produce completely new organisms by regeneration. Are these new organisms genetically identical to the parents? Why or why not

What are 3 types of muscle tissue still?

Which of the following is a true statement? * Waves do not transport matter through which they travel Waves can transport matter through solids, liquids and gases, but not through empty space.