Question

A piece of nickel at 25 °C is dropped into a glass of water at 25 °C. Which statement is correct?

A. Heat will flow from the nickel to the water in the glass.
B. Heat will flow from the water in the glass to the nickel.
C. There will be no transfer of heat from the nickel to the water in the glass.
D. The final temperature of water and nickel will be 0 °C.


Two identical metal spheres at 8 °C are put into two beakers with equal amounts of water, as shown below.

Two beakers are side by side; one is labeled Beaker A and the other is labeled Beaker B. Both beakers are the same shape, size, and are about two-thirds full with water. Both beakers have a metal sphere with a temperature of eight degrees Celsius submerged in the water.

Heat flows from the metal spheres to the water in Beaker A and Beaker B. Which statement is correct?

A. The temperature of the water in both beakers is lower than 8 °C.
B. The temperature of the water in both beakers is greater than 8 °C.
C. The temperature of the water in both beakers will decrease.
D. The temperature of the metal spheres in both beakers will increase.

Answer 1

the answer is C the temp of water in both beakers will decrease since the metal is flowing heat into the water. Therefore we can say the metal losses heat and the water gains the heat lost by the metal minus any heat loss to surroundings! Hope this explanation helps you understand the concept! Please rate if I helped you! Thank you so much!

Answer 2

(a) There will be no transfer of heat from the nickel to the water in the glass.

(b)The temperature of the metal spheres in both beakers will increase.

What is heat transfer?

When two objects are at different temperature and comes in contact with  each other, the then the heat flow from high temperature to lower temperature.

(a) Now we have a condition, that A piece of nickel at 25 °C is dropped into a glass of water at 25 °C:-

Since the heat transfer is the function of only the temperature difference, so that there will be no transfer of heat from the nickel to the water in the glass.

(b) Two identical metal spheres at 8 °C are put into two beakers with equal amounts of water

The normal temperature of water is about 20-25 degree centigrade, so when the metal spheres are dipped in the water, the temperature of both the sphere will increase.

Thus here will be no transfer of heat from the nickel to the water in the glass.The temperature of the metal spheres in both beakers will increase.

To know more about Heat transfer, follow

https://brainly.com/question/16055406