Question

The oil in an automobile is used to lubricate internal engine parts and keep these parts clean. Oil can be subjected to temperature differences as high as ΔT = 303 F° especially oil near the combustion chamber. Derive an expression to convert this difference into Celsius and enter the answer below.

ΔTc = _______________ C°

Answer 1

To convert temperature difference from Fahrenheit to Celsius, the formula ΔTc = (ΔTf - 32) × 5/9 is used. For a ΔT of 303 F°, the temperature difference in Celsius is approximately 150.6 C°.

Step-by-step explanation:

To convert a temperature difference from Fahrenheit to Celsius, you can use the formula ΔTc = (ΔTf - 32) × 5/9, where ΔTc is the temperature difference in Celsius and ΔTf is the temperature difference in Fahrenheit. In this case, the temperature difference given is ΔT = 303 F°. Applying the formula, we get:

ΔTc = (303 - 32) × 5/9

ΔTc = (271) × 5/9

ΔTc = 150.555...

Thus, the temperature difference in Celsius is approximately 150.6 C°.

Motor oils in an automobile engine should maintain their viscosity across a wide range of temperatures to ensure proper lubrication. With the kinetic energy of the oil molecules increasing, their ability to overcome intermolecular attractive forces improves, which in turn affects viscosity. As a car engine operates, it undergoes various thermodynamic processes, including the Otto cycle, where it is challenged by friction, heat exchange, and changes in temperature, illustrating the need for effective lubrication.