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Kelvin is an absolute scale, which makes much more sense once you understand that temperature is related to the speed of atoms (they can't have a negative speed). An absolute scale is one in which the lowest possible temperature is zero. An absolute scale also makes more sense in thermodynamics, where the ratios between two temperatures are often important.
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Why can shell eggs be received at an air temperature of 45 degrees Fahrenheit or lower instead of an internal temperature of 41 degrees Fahrenheit or lower?
because of its hard shell
What is the value of sin22?
That depends on what angular measurement is used. Set your scientific calculator to the desired angular measurement (either degrees, or radians), then press 22, followed by sin. Or in more modern calculators, you press sin, followed by 22, instead.
Convert this -15 c temperature to the kelvin scale?
The conversion of Celsius to Kelvin: Kelvin = Celsius + 273.15. Instead of 273.15, the value of 273 is also used. so 273.15-15=258
Why do astronauts take measurement in centimeters instead of inches?
with cows
Why you use kelivin in calculation instead of celsius and Fahrenheit?
Kelvin has the advantage that it is an absolute temperature scale - it starts from absolute zero. This simplifies several calculations; for example, in an ideal gas, at constant pressure, the volume of the gas is proportional to the absolute temperature. Similarly, calculations related to heat machines are simpler if an absolute temperature scale is used.
