This experiment was divided into two parts. for the first part of the experiment, the was intentionally manipulated. this was the independent variable. the dependent variable measured was the . for the second part of the experiment, the was intentionally manipulated. this was the independent variable. the dependent variable measured was the .

What is the conversion factor between kg/m^3 and g/m^3. express your experimental values for the densities in kg/m^3.

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.

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=