(a) the temperature on a warm summer day is 87 °f. what is the temperature in °c? (b) many scientific data are reported at 25 °c. what is this temperature in kelvins and in degrees fahrenheit? (c) suppose that a recipe calls for an oven temperature of 400 °f. convert this temperature to degrees celsius and to kelvins. (d) liquid nitrogen boils at 77 k. convert this temperature to degrees fahrenheit and to degrees celsius.

Respuesta :

a. T = 87 F0

Temperature can be converted to celcius as follows:

F = (9 /5) C + 32

87 = (9 /5) C + 32

C = 30.55 C0

b. T = 25 C0

Temperature can be converted to kelvin as follows:

K = C + 273.15

= 30.55 + 273.15 = 303.7 K

F = (9 /5) C + 32

F = (9 /5) (25) + 32 = 77 F

c. T = 400 F

400 = (9 /5) C + 32

C = 204.44 C0

K = C + 273.15

K = 204.44 + 273.15 = 477.59 K

d . T = 77 K

77 K = C + 273.15

C = - 196.15 C0

F = (9 /5) C + 32

F = (9 /5) (- 196.15) + 32 = -321.07 F


Answer :

(a) The temperature in degree Celsius is, [tex]30.5^oC[/tex]

(b) The temperature in Kelvin and in degree Fahrenheit is, 298K and [tex]77^oF[/tex] respectively.

(c) The temperature in degree Celsius and Kelvin is, [tex]204.4^oC[/tex] and 477.4 K respectively.

(d) The temperature in degree Fahrenheit and Celsius is, [tex]-320.8^oF[/tex] and [tex]-196^oC[/tex] respectively.

Explanation :

The conversion used for the temperature from Fahrenheit to degree Celsius is:

[tex]^oC=(^oF-32)\times \frac{5}{9}[/tex]

where,

[tex]^oF[/tex] = temperature in Fahrenheit  

[tex]^oC[/tex] = temperature in centigrade

The conversion used for the temperature from degree Celsius to Kelvin is:

[tex]K=273+^oC[/tex]

where,

[tex]K[/tex] = temperature in Kelvin

[tex]^oC[/tex] = temperature in centigrade

(a) As we are given the temperature in Fahrenheit is, [tex]87^oF[/tex]

Now we have to determine the temperature in degree Celsius.

[tex]^oC=(^oF-32)\times \frac{5}{9}[/tex]

[tex]^oC=(87^oF-32)\times \frac{5}{9}[/tex]

[tex]^oC=30.5[/tex]

(b) As we are given the temperature in degree Celsius is, [tex]25^oC[/tex]

Now we have to determine the temperature in Kelvin.

[tex]K=273+^oC[/tex]

[tex]K=273+25[/tex]

[tex]K=298[/tex]

Now we have to determine the temperature in degree Fahrenheit.

[tex]^oC=(^oF-32)\times \frac{5}{9}[/tex]

[tex]25^oC=(^oF-32)\times \frac{5}{9}[/tex]

[tex]^oF=77[/tex]

(c) As we are given the temperature in Fahrenheit is, [tex]400^oF[/tex]

Now we have to determine the temperature in degree Celsius.

[tex]^oC=(^oF-32)\times \frac{5}{9}[/tex]

[tex]^oC=(400^oF-32)\times \frac{5}{9}[/tex]

[tex]^oC=204.4[/tex]

Now we have to determine the temperature in Kelvin.

[tex]K=273+^oC[/tex]

[tex]K=273+204.4[/tex]

[tex]K=477.4[/tex]

(d) As we are given the temperature in Kelvin, 77 K

Now we have to determine the temperature in degree Celsius.

[tex]K=273+^oC[/tex]

[tex]77=273+^oC[/tex]

[tex]^oC=-196[/tex]

Now we have to determine the temperature in degree Fahrenheit.

[tex]^oC=(^oF-32)\times \frac{5}{9}[/tex]

[tex]-196^oC=(^oF-32)\times \frac{5}{9}[/tex]

[tex]^oF=-320.8[/tex]