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Jet001 [13]
3 years ago
10

On a trip, you notice that a 3.64 kg 3.64 kg bag of ice lasts an average of 1 day 1 day in your cooler. What is the average powe

r absorbed by the ice if the ice starts at 0 °C 0 °C and completely melts to liquid water at 0 °C 0 °C in exactly 1 day 1 day ? Give your answer in units of watts.
Mathematics
1 answer:
Ray Of Light [21]3 years ago
4 0

Answer:

14.07W

Step-by-step explanation:

Mass of ice = 3.64 kg

Δt = 1 day

Initial temperature = 0°c

Final temperature = 0°c

Convert 1 day to seconds

1 * 24* 60 *60= 8.64 * 10^ 4 secs

Latent heat of fusion of water (Lf) = 334 * 10^3 J/kg

Average power = W/Δt

Energy that leaves and enters the system is heat energy. Therefore,

Average power = Q/Δt

Q= m(ice) * Lf

Q = 3.64 * 334 * 10^3

Power = (3.64 * 334 * 10^3)/ 8.64 * 10^4

= 1.21576 * 10^6 / 8.64 * 10^4

= 0.1407 * 10^2

= 14.07 W

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Marrrta [24]

1352.2 or

\frac{673}{5}

Step-by-step explanation:

\frac{65}{100}  \times 208 = answer

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3 years ago
There are 5 chocolate bars. Each bar is split into 8 pieces.
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The total of how many pieces you have
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There is a manhole cover with a radius of 1 foot. What is the manhole cover's diameter?
zhuklara [117]

Step-by-step explanation:

This seems like you just want to figure out the circumference of the manhole cover. The formula for the circumference of a circle is pi (3.14) multiplied by the diameter (d) of the circle so, circumference=πd. (π is the symbol for pi and approx. equals 3.14)

Circumference = πd

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The length of the brass grip-strip will be 9.42 ft.

If the problem was stated in terms of the radius of the manhole cover then the formula would be circumference = 2πr which is the radius multiplied by 2 then multiplied by pi.

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6 0
2 years ago
The side of one square is equal to 3m and its diagonal is equal to the side of a second square. Find the diagonal of the second
navik [9.2K]

Answer:

6m

Step-by-step explanation:

the side of first square = 3 m

area of first square = 3^2= 9 m^2

let the side of second square = x m

since diagonal of first square = x m as per the question

in a square each angle is 90 degree

therefore by applying pythagorus theorem ,

diagonal ^2 = side^2 + side ^2

diagonal^2 = 3^2+3^2=9+9

DIAGONAL= square root of 18

diagonal= 3\sqrt{2} m = side of second square

therefore in second square ,

one angle is 90  degree , therefore by applying pythagorue theorem

diaqonal^2 = side ^2 + side ^2 = (3\sqrt{2})^2 + ( 3\sqrt{2})^2

diagonal ^2 = 18 + 18

diagonal = square root of 36

therefore diagonal of second square is 6m

hope it helps you... please mark me as the brainliest..

8 0
3 years ago
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elena-s [515]

Answer:

<h2>h= -3</h2><h2 />

Step-by-step explanation:

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h = -120/4

h= -3

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3 years ago
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