(=F. A20.N.. 100.cm? = 0.2N/cm3 soressure 3 A student is investigating the pressure that a block of wood is exerting on the floor.
The weight of the wood is 20 N. The block is 10 cm long, 5 cm wide, and 2 cm high.
What is the biggest pressure that the block can exert on the floor?
Given ForceDON. g.blockArea075X2=\00cm
a
pressure.
Formula & LxWxH
a

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

This is the substance(s) formed in a chemical reaction.

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of