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Dahasolnce [82]
3 years ago
12

I just pulled up to Sheetz and filled my car up with gas. Explain the transfer of energy that would occur once I start then driv

e my car--consider the type of energy that exists within the gas molecules, explain the transfer of form of energy as gas is burned and I drive my car, and consider how the engine and tires may feel after I have traveled in my car. (Use the following terms in your explanation: potential energy, kinetic energy, friction, and heat.)
Physics
1 answer:
Lisa [10]3 years ago
4 0
That one's hard but I'm not really sure what the answer is
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In a standard tensile test a steel rod of 22-mm diameter is subjected to a tension force of 75kN. Knowing that v = 0.30 and E =
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Answer:

(a) Elongation of rod = 0.19732 mm

(b) Change in diameter = 0.00651 mm

Explanation:

Circular area at end of steel rod = pi * diameter^2 / 4

Area = pi * (22 * 10^-^3)/4

Area = 3.801 * 10^(-4)    meter squared

Stress = force / area

Stress = 75000 / (3.801 * 10^-4)

Stress = 197316495 Pa     OR       0.197 GPa

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200 = 0.19732 / Strain

Strain = 0.0009866     (longitudinal)

(a) Strain = change in length / initial length

0.0009866 = Elongation of rod / 200

Elongation of rod = 0.19732 mm

(b) Poisson ratio = lateral strain / longitudinal strain

0.3 = lateral strain / 0.0009866

Lateral strain = 0.000296

Lateral strain = Change in diameter / original diameter

0.000296 = Change in diameter / 22

Change in diameter = 0.00651 mm

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