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On a hot dry day, evaporation from a lake has just enough heat transfer to balance the 1.00 ${kW} / {m}^{2}$ of incoming heat from the Sun. What mass of water evaporates in 1.00 h from each square meter? Explicitly show how you follow the steps in the Problem-Solving Strategies for the Methods of Heat Transfer.

$\frac{m}{A}=1.48 \mathrm{kg} / \mathrm{m}^{2}$

Physics 101 Mechanics

Chapter 14

Heat and Heat Transfer Methods

Thermal Properties of Matter

Rutgers, The State University of New Jersey

University of Washington

University of Sheffield

McMaster University

Lectures

02:20

A solid, liquid, or gas is…

06:13

Matter is a state of aggre…

04:36

(a) In reaching equilibriu…

01:29

Evaporating sweat cools th…

02:51

How much heat is absorbed …

02:34

Calculate the amount of he…

07:34

The enthalpy of fusion of …

08:21

Two hundred grams of water…

04:38

You have a 1.00 -mole samp…

00:41

How much heat is evolved w…

00:58

08:33

A 1.28-kg sample of water …

01:14

01:36

02:12

Calculate the quantity of …

02:17

On a hot day, the temperat…

01:13

Two grams of liquid water …

02:01

During a strenuous workout…

00:17

Does the amount of heat ab…

04:11

03:46

Consider a Carnot-cycle he…

02:47

Calculate the entropy chan…

So we are given the quantity. Q. Divided by a divided by t so that is heat transfer per unit area per unit. Time on it has given us one kilowatt per meter square, so we must convert kiddo. What two. Watch That's 1000 on cue. We can find out by using two steps. So one step is to increase the temperature of water from given temperature too boiling point. So that will be dealt a T M so massive. Water times specifications. Water times Delta T plus myself quarter times lf we That is late and Tito Vaporization now area and teeth Since we want mass for unity area, let's take mass as a common factor from both both both things. So that will give us Massell water divided by area. Oh, there's 1000 year is equal to 1000 times this tea by Lee of teens one hour. So that will be 3600 remaining terms will be this and plus this. So CW is for +186 Delta. Tina is a tricky part. Uh, we don't know what's to start in Temperature is so let's assume is felt. His seven point bite between 35 to 40 degrees Celsius. So the change in temperature is from 37.5 200. If you assume 35 you will get a different answer. But it will not be wrong. So let's assume that leaves 62.5 last light and Tito Vaporization is still 256 000 If you perform this calculation, you will get well. Which is mass divided by area is equal to 1.43 kilogram. Well, me too square. So although my value does not match exactly with the value given on the numerator page, this is not wrong depending on what temperature you used. If you use 50 degree six years, you can get the value one point for 60 few years 55. You can get even more even you are even more. Thank you.

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