Answer: The strong nuclear force.
Explanation: The strong force holds the protons and neutrons together in the nucleus. Despite being the strongest force, it has a very small range. (Think about how small an atom is) The strong force is thought to occur due to the exchange of pions between the protons and the neutrons. Since pions have a very short lifespan, the protons and neutrons must be very close to each other in order to exchange them. This phenomenon is what keeps the protons and neutrons so tightly binded together in the nucleus.
Answer:
10 m^3 /s
Explanation:
1 m X 2 m X 5 m /s = 10 m^3/s
Answer:
245 divided by 5.14=47.6653696 or 47.66
Explanation:
Answer:
Explanation:
Original diameter = 5mm
d= 0.005m. r=0.0025m
True stress (σ) = 290MPa
Coefficient of annealing copper (n)=0.5
True stress is given as force/area
σ=F/A
Ao=πr^2
Ao=1.963×10^-5m2
F=σ ×A
F=290×10^6 ×π×(0.0025)^2
F= 5694.13N
Given that
σ=Kε^n
290=Kε^0.5
n=ε=0.5 at necking
Therefore
290=K×0.5^0.5
K=410.12MPa
ε=In(Ao/A)
0.5=In(π×0.0025^2/A)
exp(0.5)=1.96×10^-5/A
A=1.96×10^-5/exp(0.5)
A= 1.2×10^-5m2
This is the new area
Then the Ultimate Tensile Stress
σ=F/A
σ=5694.13/1.2×10^-5
σ=4.75×10^8Pa
σ=475MPa
Therefore,
The ultimate tensile stress is 475MPa.
The maximum tension is
Fo/Ao=F/A
F=(Fo/Ao) ×A
F=(5694.13/1963×10^-5)×1.2×10^-5
F= 3479.99
F=3480N.
