Generate Quiz 6A0745A016F96

The ratio of tensile stress (σ) to tensile strain (ε) is known as the Young’s modulus (E), and it indicates how easily a material can stretch and deform. where strain is extension per unit length (ε = dl/l) and stress is the force applied per unit area (σ = F/A).

The Young’s modulus formula is:

E stands for Young’s modulus or pressure.

σ is the force/stress per unit area.

M stands for proportional deformation or strain.

Strain is the ratio of the same dimensions, if you follow the formula. Strain is therefore a dimensionless quantity.

Consequently, the dimensions of stress and Young’s modulus are identical.[ML−1T−2]

GIVEN: 0.010 strain

TO FIND: strain energy density divided by strain energy per unit volume =?

RESULTS:

12stressstrain is the strain energy per unit volume.

= 12 (2x109Pa)(0.010)

= 109x10x10-3

= 10×109-3

= 10×106 106=mega(M)

= 10 MJm-3

The ratio of stress to strain is called Young’s modulus of elasticity (E), or the elastic modulus. Because strain/stress (gradient = x-axis/y-axis) is the graph’s gradient. Therefore, Young’s modulus would be equal to its reciprocal.

Electrons and other charged particles (ions) must move in order for electricity to condense. In a solid state, metals can conduct electricity because they have free electrons. However, as the temperature rises, more electrons collide, increasing the resistance to current flow.

If a liquid is ionic, it can conduct electricity; for example, liquid mercury is a metal, so it conducts electricity using the same mechanism as metals. Electricity is conducted by salt solutions, molten salts, etc.

Unless the ionization potential is exceeded, gases are insulators and do not conduct electricity. One instance of the breakdown of air insulation is lightning.