Two equal masses of different materials are mixed If their denisties are 2000kg/m^3 and 6000kg/m^3 volume of mixture equal summation of Volume of materials before mixing find average denisty​

Energy flows from the producer level to the level. is called

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.

What is the major limitation to the light microscope?