5.4 Pressure Questions

·         PFY p.91, Q.3 and 7.

 p= F/A

100 000 = F/10

100 000 X 10 = 1000000N

   

a)      p= F/A

p= 500/0.0005

p= 100 000Pa

b)      p= F/A

100 000= F/0.002

A= 2 000N

5.4

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P5 student objectives sheet

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5.2 and 5.3 Density

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Density of a regular solid – Lead

 

Mass = 175.4g

Width = 2cm

Length = 5cm

Height = 4.6cm

Volume = width x length x height

V = 2 x 5 x 4.6 = 46cm3

P = m / V = 175.4 / 46 = 12.5g/cm3