Answer:
10.984mm
Explanation:
by elastic modulus
stress=modulus of elasticity*strain
stress=loading/area area" cross-section"
11mm=0.011m
area=π(d/2)^2=π(0.011/2)^2=9.503*10^-5 square meter
stress=55000/(9.503*10^-5)=578.745 MPa
convert MPa and GPa to pascal.
strain=stress/modulus=(578.745*10^6)/(125*10^9)=0.00463............axial strain
v=Poisson ratio
lateral strain=(-v)*axial strain= -0.31*0.00463
lateral strain= -1.4353*10^-3=change in diameter/ original diameter
change in diameter=(-1.4353*10^-3)*0.011= -1.57883*10^-5 m
negative indicates decrease in diameter.
decrease in dia.=0.01578mm
new diameter=11-0.01578= 10.984mm
Answer:
Check the explanation
Explanation:
Kindly check the attached image below for the full step by step explanation to your question.
Answer:
The change in entropy = -0.6306 kJ/k
Explanation:
The mass of air = 2kg
In a Compressed isothermal process T₁ = T₂ = 27⁰ C
The initial pressure = 100 kPa
Final volume V₂ = 1/3 (V₁)
i.e. V₂/V₁ = 1/3
Rate ( gas constant) R = 0.287 kJ/kgk
The change in an entropy process is:
ΔS = m × R × In(V₂/V₁)
ΔS = 2 × 0,287 × In (1/3)
ΔS = -0.6306 kJ/k
1 micro gram of Strontium-90 has an activity of
0.0000053 terabecquerels (TBq),
Explanation:
Given information denotes that .,one gram of Strontium-90 has an activity of 5.3 terabecquerels (TBq)
the activity of 1 micro gram is
1 gram = 1,000,000 micro gram has activities of 5.3 terabecquerels
therefore 1 micro gram has the activity of (5.3 ÷ 1,000,000 = 0.0000053 )
=
Hence ., 1 micro gram of Strontium-90 has an activity of
0.0000053 terabecquerels (TBq),