Which best describes the geologic time scale
2 answers:
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Answer : will dissociate into strontium ion,
with a (+2) charge and hydroxide ion,
with a (-1) charge.
Explanation :
As we know that when strontium hydroxide, dissociates then it gives strontium ion,
and hydroxide ion,
.
The dissociation reaction will be:
will dissociate into strontium ion,
with a (+2) charge and hydroxide ion,
with a (-1) charge.
Answer:
The shear stress is 2.16 Pa
Explanation:
Newton's law of viscosity can be expressed as follows;
Where:
τ = Shear stress in the fluid
Given that the diameter of the wire = 5 cm
The velocity of the wire = 18 cm/s
The diameter of the pipe = 10 cm
The fluid viscosity, μ = 3.0 cp = 1×10⁻³· Pa·s
The change in velocity from the surface of the wire to the internal surface of the pipe = dv = 18 cm/s
The change in the y (perpendicular) direction of motion of the fluid from the surface of the wire to the interior surface of the tube = dy = 10/2 - 5/2 = 2.5 cm
By putting in the values, we have;
The shear stress = 2.16 Pa