3. Ivy and Walter get stranded in the wilderness and build a snow cave to sleep in. They want to warm up the cave before they sleep, but disagree on how to do so. Ivy wants to bring a large block of ice into the cave, claiming that when it melts the cave will warm up. Walter wants to bring a bucket of water into the cave, claiming that when it freezes the cave will warm up. Which of them is correct? Explain.

3. Ivy and Walter get stranded in the wilderness and build a snow cave to sleep in. They want to warm up the cave before they sleep, but disagree on how to do so. Ivy wants to bring a large block of ice into the cave, claiming that when it melts the cave will warm up. Walter wants to bring a bucket of water into the cave, claiming that when it freezes the cave will warm up. Which of them is correct? Explain.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 74P: (a) How much heat transfer is required to raise the temperature of a 0.750-kg aluminum pot...

See similar textbooks

Similar questions

A cylinder of volume 50.0 cm3 made of Pyrex glass is full to the brim with acetone. If the cylinder and acetone are warmed by 30.0C, (a) what is the change in volume of the glass? (b) Of the acetone? (c) Will any acetone spill out of the cylinder? (See Section 10.3.)
The latent heat of vaporization for water at room temperature is 2 430 J/g. Consider one particular molecule at the surface of a glass of liquid water, moving upward with sufficiently high speed that it will be the next molecule to join the vapor. (a) Find its translational kinetic energy. (b) Find its speed. Now consider a thin gas made only of molecules like that one. (c) What is its temperature? (d) Why are you not burned by water evaporating from a vessel at room temperature?
If you pour 0.0100 kg of 20.0C water onto a 1.20kg block of ice (which is initially at 15.0C ), what is the final temperature? You may assume that the water cools so rapidly that effects of the surroundings are negligible.
- (a) Compute the amount of heat needed to raise the temperature of 1 kg of water from its freezing point to its normal boiling point. (b) How does your answer to (a) compare to the amount of heat needed to convert 1 kg of water at 100° C to steam at 100°C?
On a very cold day in upstate New York, the temperature is -25C, which is equivalent to what Fahrenheit temperature? (a) -46F (b) -77F (c) 18F (d) -25F (e) -13F
In winters, if is often warmer in San Francisco than in nearby Sacramento, 150 km inland. In summers, it is nearly always hotter in Sacramento. Explain how the bodies of water surrounding San Francisco moderate its extreme temperatures.
In my humid climates where there are numerous bodies of water, such as in Florida, it is unusual for temperatures to rise above about 35C(95F). In deserts, however, temperatures can rise far above this. Explain how the evaporation of water helps limit high temperatures in humid climates.
An automobile radiator is filled to the brim with water when the engine is cool, (a) What happens to the water when the engine is running and the water has been raised to a high temperature? (b) What do modern automobiles have in their cooling systems to prevent the loss of coolants?
On a cold winter day. you buy roasted chestnuts from a street vendor. Into the pocket of your down parka you put the change he gives you: coins constituting 9.00 g of copper at 12.0C. Your pocket already contains 14.0 g of silver coins at 30.0C. A short time later the temperature of the copper coins is 4.00C and is increasing at a rate of 0.500C/s. At this time, (a) what is the temperature of the silver coins and (b) at what rate is it changing?
The Surface temperature of the Sun is about 5750 K. What is this temperature on the Fahrenheit scale?
In warm climates that experience an occasional hard freeze, fruit growers will spray the fruit trees with water, hoping that a layer of ice will form on the fruit. Why would such a layer be advantageous?
One easy way to reduce heating (and cooling) costs is to add extra insulation in the attic of a house. Suppose the house already had 15 cm of fiberglass insulation in the attic and in all the exterior surfaces. If you added an extra 8.0 cm of fiberglass to the attic, then by what percentage would the heating cost of the house drop? Take the single story house to be of dimensions 10 m by 15 m by 3.0 m. Ignore air infiltration and heat loss through windows and doors.