• Accueil
  • Math
  • Awindowpane is half a centimeter thick and has an...

Awindowpane is half a centimeter thick and has an area of 0.7 m2. the temperature difference between the inside and outside surfaces of the pane is 15 °c. what is the rate of heat flow through this window? (thermal conductivity for glass is 0.84 j/s⋅m⋅°c.) ​ select one: a. 3,600 j/s b. 2,100 j/s c. 1,180 j/s d. 1,800 j/s e. ​1,400 j/s

Answers

  • Réponse publiée par: snow01

    The answer is d. 1800 J/s.

    Step-by-step explanation:

    The given quantities are:

    d = 0.5 cm = 0.005 m               (thickness of the windowpane)

    A = 0.7 m²                                  (area of the windowpane)

    ΔT = 15 °C                                  (temperature difference)

    k = 0.84 J/s·m·°C                       (thermal conductivity)

    To get the rate of heat flow, we must use the equation:

    \frac{Q}{t} = \frac{kA(\Delta T)}{d}

    Substituting all the given quantities, we get:

    \frac{Q}{t} = \frac{(0.84 \frac{J}{s.m. \textdegree C})(0.7m^{2} )(15 \textdegree C)}{0.005 m}

    \frac{Q}{t} =1764 \frac{J}{s}

    rounding off we get \frac{Q}{t} =1800 \frac{J}{s}

    I hope this helps.

  • Réponse publiée par: brianneaudreyvuy

    the sum of 9.3+6.12+13.4=28.82

    Step-by-step explanation:28.82 in decimal form.1441\50 in fraction and simpliest form. hope this helps

  • Réponse publiée par: aimeedelacruz24

    1. B 325

    3.A 6

    4. A 2, 4, 6, 8

    Step-by-step explanation:

    SORRY YAN LNG ALAM KO

  • Réponse publiée par: nila93

    1.B

    2.A

    -hope it helps..

  • Réponse publiée par: kambalpandesal23

    9.A 10.C

    11.C 12.B

    13.C 14.A

    15.D 16.B

    17.C 18.D

    19.B 20.B

    21.C 22.D

    23.A 24.A

    #carry on Learning

  • Réponse publiée par: kelly072

    9

    Step-by-step explanation:

    9 x 9 x 9 x 9  =  6561

  • Réponse publiée par: Laurenjayshree

    ang 15 po ay 2,2,5,5

    Step-by-step explanation:

    according to my calculations

  • Réponse publiée par: enrica11

    answer:

    1. 587.14

    2. 0.5

    3. 22.00

  • Réponse publiée par: candace08

    answer:

    1.A

    2.A

    3.A

    4. Di naintindihan tanong.

    5.A

    6.B

    7.B

    8.C

    9.A

    10.B

  • Réponse publiée par: pauyonlor

    answer:

    the difference beetween those is 89.16

Connaissez-vous la bonne réponse?
Awindowpane is half a centimeter thick and has an area of 0.7 m2. the temperature difference between...