18 July, 22:30
A person with a body temperature of 37°C holds an ice cube with a temperature of 0°C in a room where the air temperature is 20.°C. The direction of heat flow is
(1) from the person to the ice, only
(2) from the person to the ice and air, and from the air to the ice
(3) from the ice to the person, only
(4) from the ice to the person and air, and from the air to the person
18 July, 22:41
The answer is (2). Heat always flows down the temperature gradient, from high temperature to low temperature. Therefore, since the person is the warmest, heat flows from the person to both the ice and the air. Additionally, since the air is warmer than the ice, heat flows from the air to the ice.
Know the Answer?
New Questions in Chemistry
Which are ways that humans can lower biodiversity as they use the environment? CHECK ALL THAT APPLY
The opera station broadcasts at 90.5 MHz and the rock nroll station at 07.1 MHz which station's signal has waves with longer wavelengths and which one has higher energy
Solve 3 q - 5 = 13 for q. q =
Beth files a suit against Cruise Line, Inc. Cruise responds that it appears from the pleadings that the parties do not dispute the facts and the only question is how the law applies to those facts.
Which of the following was best compares an armistice to a peace treaty
Aqueous hydrochloric acid will react with solid sodium hydroxide to produce aqueous sodium chloride and liquid water. Suppose 34. g of hydrochloric acid is mixed with 9.30 g of sodium hydroxide.
How did the colonist use it to get more support for their rebellion
Is 7/8 greater than 3/4
What is the molar mass of C2H6O
True Flight Golf manufacturers a popular shaft for golf clubs. Its trade secret is a unique process for weaving high-tension wire into the center of the shaft such that energy is accumulated during the swing and released at impact.
» A person with a body temperature of 37°C holds an ice cube with a temperature of 0°C in a room where the air temperature is 20.°C.