Answer:
4. The velocity gradient at the wall is greater for a laminar boundary layer than a turbulent boundary layer.
Explanation:
This is false
Answer: True
Explanation:
Circuit breakers are used to stop the current by using heat to detect if it has a critically large current. Defoggers use heat to stop condensation on the windows.
Answer:
a) the velocity of the implant immediately after impact is 20 m/s
b) the average resistance of the implant is 40000 N
Explanation:
a) The impulse momentum is:
mv1 + ∑Imp(1---->2) = mv2
According the exercise:
v1=0
∑Imp(1---->2) = F(t2-t1)
m=0.2 kg
Replacing:
if F=2 kN and t2-t1=2x10^-3 s. Replacing
b) Work and energy in the system is:
T2 - U(2----->3) = T3
where T2 and T3 are the kinetic energy and U(2----->3) is the work.
Replacing:
Answer:
Absolute viscosity is the evaluation of the resistance (INTERNAL) of the fluid flow
Kinematic viscosity relates to the dynamic viscosity and density proportion.
SUS stands for Sabolt Universal Seconds. it is units which described the variation of oil viscosity
Explanation:
Absolute viscosity is the evaluation of the resistance (INTERNAL) of the fluid flow, whereas Kinematic viscosity relates to the dynamic viscosity and density proportion. fluid with distinct kinematic viscosities may have similar dynamic viscosities and vice versa.Dynamic viscosity provides you details of power required to make the fluid flow at some rate, however kinematic viscosity shows how quick the fluid moves when applying a certain force.
SUS stands for Sabolt Universal Seconds. it is units which described the variation of oil viscosity when change with change in temperature. it is measured by using viscosimeter.
