Three parameters affect the absorbance of a sample. which one is the focus of this experiment

the amount of light

the purity of the liquid

the concentration

Explanation:

There are three parameters that affect the absorbance of light. These are the the amount of light, the purity of the liquid and the concentration of the substance. The intensity of the light plays a role in the penetration of the light. A strong wave length light penetrates more. The purity also affects the absorbance. In addition, the concentration of the substance.  A more concentrated substance absorbs light more. The focus of the experiment will be on the effect of the concentration of the substance.

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied