Answer:
0.00116
Explanation
The tensile modulus is the measure of the elastic deformation that a material has undergo.
While elastic strain is define as form of strain in which a body return to its original length after the removal of the force .
Strain s expressed as
Where e is the strain, A is the area, F is the applied force and E itensile modulus
From the data given,
Force, F=40,000
Area=πr^2
and the tensile modulus E=110GPa
If we insert values we arrive at
Hence the strain experienced by the material is 0.00116
Answer:
Option A (energy transformations) is the correct solution.
Explanation:
- Energy has become a local matter that has been primarily described as the commitment to deal as well as to generate heat. There are several other power sources, which can either be transferred or transformed to several other renewable technologies.
- This same fundamental law defined that the energy required including its universe has been corrected and therefore that energy is being generated as well as severely damaged but should only be moved from one location to the next.
Those certain possibilities are not connected to the circumstance in question. And therefore this answer seems to be the correct one.
Answer: False
Explanation: Sandwich materials are usually in composite material form which has a fabrication of two thin layers which are stiff in nature and have light weighing and thick core .The construction is based on the ratio that is of stiffness to the weight .Therefore, the density of the material in the core is not high and are only connected with the skin layer through adhesive .So the given statement is false that sandwich materials typically use a high density core with non- structural cover plates.
Answer:
t=5.5 mm
Heat dissipation per unit length = 90.477 W/m
Explanation:
Given that
Diameter d = 5 mm ⇒r = 2.5 mm
Conductivity of insulated material K = 0.16 W/mK
Heat transfer coefficient = 20
When thickness reaches up to critical radius of insulation then heat dissipation will be maximum
We know that critical radius of insulation of wire is given as follow
Now by putting the values
So the thickness of insulation
t=8-2.5 mm
t=5.5 mm
As we know that heat transfer due to convection given as follows
Q = hAΔ T
Q=20 x 2 x π x 0.008 x (120-30)
Q = 90.477 W/m
So heat dissipation per unit length = 90.477 W/m
La teoría de la evolución es un término que recoge un corpus, es decir, un conjunto de conocimientos y evidencias científicas que explican cómo aparecen nuevos seres vivos. Esta explicación se basa en hechos observados por el propio Darwin, quien describió en sus textos estos fenómenos.