Question

Express the answer in scientific notation. What is the pressure, in N/m2, at a depth of 50 km in the continental crust?

The pressure is _____× 10 ?N m2 .

Answer 1

1.422
`* 10^9` N/m²

Step-by-step explanation:

pressure (P) = ρ g h

where ρ= density of continental crust

g= acceleration due to gravity

h is the depth given

density of continental crust is equal to 2.9 g/cm³

=
`(2.9* 10^(-3))/(10^(-6) ) =2.9* 10^3 kg/m^3`

g=9.81 m/s²

height = 50,000 m

now,

pressure (P) = ρ g h

pressure (P) =
`2.9* 10^3* 9.81* 50000`

=1.422
`* 10^9` N/m²