When one observes a scratch on the bottom of a block of clear plastic, the scratch appears to be 2.5 cm below the top surface as viewed from above. the actual thickness of the plastic block is 3.0 cm. the index of refraction of the block is

1.2

Explanation:

Index of refraction = actual thickness/virtual thickness

Actual thickness = 3cm, virtual thickness = 2.5cm

Index of refraction = 3/2.5 = 1.2

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )