10 articles trouvés pour ce sujet.
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Cooling |
2010-03-07 |
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Lori pose la question :
If a house is always at 20 degrees celsius.
Water (tea) boils at 100 degrees celsius.
5 minutes later the tea was 70 degrees celsius.
Use an equation to predict the temperature after 20 minutes.
Tyler Wood lui répond. |
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Fahrenheit and celcius |
2010-02-19 |
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Carol pose la question :
Zack is packing for a trip to Scotland. He read that the average temperature in the Summer is 18degrees C during the day, and 7 degrees during the night. What is the difference between the high and low temperatures in degrees Fahrenheit? (F=9/5C=32)
Lorraine Dame lui répond. |
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Fahrenheit and centigrade |
2007-04-18 |
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kyrie pose la question :
help ?
temperature formula: f and c represent degree's of temperature.
exact formula:
f = 9c / 5 + 32
approx formula:
f = 2c + 30
at what temp in c do these formulae give an equal value for f ?
Stephen La Rocque lui répond. |
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livinia the housefly finds herself caught in the oven |
2006-06-27 |
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Danielle pose la question :
livinia the housefly finds herself caught in the oven at the point (0,0,1). the temperature at the points in the oven is given by the function
T(x,y,z) = 10 (xe(-y2) + ze(-x2))
where the units are in degrees celsius.
(i.)so if livinia begins to move towards the point (2,3,1) at what rate in deg/cm does she find the temp. changing?
(ii.)in what direction should she move in order to cool off as rapidly as possible?
(iii.)suppose that livinia can fly at a speed of the square root of 2 (cm/sec.) if she moves in the direction of part (ii) at what rate will she find the temp. to be changing?
Penny Nom lui répond. |
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Fahrenheit and Celsius |
2006-06-12 |
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Doris pose la question :
I just know how to do problems with fahrenheit or celcius. Could you show me step by step how to do these? Then I can do it if you can show me each step of the way.
Stephen La Rocque and Penny Nom lui répond. |
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The temperature in June |
2005-12-12 |
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Farina pose la question :
Question: Hi, I was having problem doing this problem.
Question:
Suppose the temperature during June is normally distributed with the mean= 20 degrees C and standard deviation= 3033 deg. A i the event that temperature is between 21.11 deg C. B is the event that the temperature is over 25Ged C. Event C is the temperature is below freezing point. Find the following probabilities:
A) P(A)
b) P(B)
C) P(C)
D) P(C given B)
E) P(neither A nor B)
F) find the expected number of days in June when event B will occur.
I know how to find questions A-D
I am only having problem with question E and F. Can you please help me. Thank You.
Penny Nom lui répond. |
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Modelling monthly temperature with a cosine |
2004-12-25 |
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Regis pose la question :
The average monthly temperature for a location in Ontario as a function of month number can be modelled using the equation y = a cos[k(t + b)] + d.
Harley Weston lui répond. |
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Solve for two variables |
2001-02-25 |
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A student pose la question :
How do I solve for %1 and %2 in the following formula when T1, T2 and T3 are known? %1 and %2 are ratios of the same element, therefore %1 + %2 = 100%
(%1 x T1) + (%2 x T2) = T3
Penny Nom lui répond. |
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Specific heat |
1999-12-22 |
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Irena pose la question :
In transferring 1260J of heat to water, the temperature of 0.20 kg of mercury falls 50 K. Calculate the specific heat capacity of mercury using the equation C= Q/(m)(delta t) i know that Q= -1260J because it's loosing heat and m= 0.2kg and since i have to use 'C i have to convert Kelvins into Celsius (i also know that 'C has to be negative since it looses heat)
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Harley Weston lui répond. |
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Temperatures |
1999-09-27 |
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Eula pose la question :
How do you cahnge farenheit degrees to celsius degrees?
Penny Nom lui répond. |
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