Fossils appear in the middle or bottom of rock layers. The removal of the top rock layers is the best way to expose the
fossils.
What is the best explanation for why fossils do not often shift
in the ground?
O They are too large to shift in the ground.
O The fossils are stuck in layers of rock.
O Flood waters cannot reach that far.
O The rock layers form natural cement.

If the force on an object is in the negative direction, the work it does on the object must be [2 points a) negative. b) positive c) the work could be either positive or negative, depending on the direction the object moves

What is the angular momentum of the bar about the axle?

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=