Aparticular fluid has a shear stress of 0.005 n m-at a shear rate of 1 s- and a shear stress of 2 n m-2 at a shear rate of 50 - present an argument as to whether this fluid is newtonian or non-newtonian.

The given fluid is Non-Newtonian

Explanation:

Given:

τ₁ = 0.005 N/m²

 = 1 s⁻¹

τ₂ = 2 N/m²

 = 50 s⁻¹

Now,

From Newton's law of viscosity

τ =

Here, μ is the dynamic viscosity of the fluid

thus,

for the first case

0.005 = μ₁ × 1

or

μ₁ = 0.005 Pa.s

similarly

For the second case

2 = μ₂ × 50

or

μ₂ = 0.04 Pa.s

Since,

μ₁ ≠ μ₂

The given fluid is Non-Newtonian

as for the Newtonian Fluid the value of dynamic viscosity remains constant

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.