Algebra

Tire pressure is directly proportional to temp on a temp scale where zero degrees is absolute zero. given that temp in degrees celcius and degrees Fahrenheit are related by the formula F=9/5C +32 and absolute zero is -273.15C, by what % does tire pressure decrease when the temp drops from 80F to 40F? express answer in nearest whole #

asked by Grace
  1. converting Kelvin to Rankine, absolute zero is -459.67°F

    so, if the temperature drops by 40°F from 80°F, that is a

    40/(459.67+80) = .0741 = 7.41% drop

    That means a corresponding drop in pressure.

    posted by Steve
  2. I aggre but you made a mistake

    posted by Jada Smart girl

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math 4

    Temp. In degrees is 19 degrees Fahrenheit. A blizzard moved in and brought lots of snow and lowered temp. By 27 degrees Fahrenheit, what was the final temp. In Fahrenheit during the blizzard?
  2. math

    The temperature in degrees Fahrenheit is equal to 32 more than 9/5 times the temperature in degrees Celsius. One day the high temp. was 95 degrees Fahrenheit. What was the high temp. in degrees celsius? I did 32+(9/5*35) 32+63=95
  3. Chemistry

    I don't understand this: For the temperature vs time graph for heat and changes of state. The graph starts at -2.1 degrees C The heat of fusion is at 2.0 degrees C The heat of vaporization is on 101.0 degrees C. The graph ends at
  4. Statistics

    During September, the average temp of laurel lake is 64.2 degrees. the standard deviation is 3.2 degrees. Assume the variable is normally distributed. For the randomly selected day, find the probability that the temp will be a.
  5. math

    the high temp today was 62 degrees. when nighttime comes, the temp will drop 40 degrees. by 4 am the temp will drop an additional 40 degrees. what is the temp at 4 am?
  6. Chemistry

    Mass of metal=45.00 grams Initial temp= 20.0 degrees Celcius Final temp= 87.0 degrees Celcius 4.184 J/g-specific heat of H2O The metal was heated up from initial temp to final temp. What would be the metal's highest temperature?
  7. math

    One day at 3:00 am the temp was -13 degrees f in Kodiak Alaska. At 10:00 am the temp was 22 degrees f. What was the average change in temp per hour?
  8. Calculus

    The celcius scale is devised so that 0 degrees celcius is the freezing point of water ( at 1 atmosphere of pressure) and 100 degrees celcius is the boiling point of water ( at 1 atmosphere of pressure) . If you are more familiar
  9. AP Chemistry

    I know this is such an easy question, but I completely forgot how to do it. Can someone please help me out? Thanks. If 57.84 g of nickel (Cp = 0.0946 J/g Degrees C) originally at 97.4 degrees C is placed into a calorimeter with
  10. college algebra

    Erin is a biology student. She heard that the number of times a cricket chirps in one minute can be used to find the temperature. In an experiment, she finds that a cricket chirps 40 times per minute when the temp. is 50

More Similar Questions