PV Gap

Tiffany Said:

Need help in Physics!?

We Answered:

1. Convection doesn’t function when the hot object is above the cold object.

2. C. Convection
3.Their temperatures rise until they are able to radiate heat away into space as fast as it arrives from the sun.

4. I have a glass of Pepsi over ice sitting on the counter. It has been sitting there for fifteen minutes and still has ice in it. If the room temperature is 270 Celsius, what is the temperature of the Pepsi in the glass?
A. 00 Celsius B. 290 Celsius C. 13.50 Celsius D. 270 Celsius
there is mistake in stating this problem. Pepsi will evoporate, and cannot exist in liquid form at 270* Celsius. you must say 270 Kelvin, than anser is A: 00 celsius.

5.Heating the water in an opened container at the top of a high mountain where the pressure is less than 760 mm Hg.

6.Add heat and reduce pressure on ice.

7. you mean to say that the water in the tub will freez, than ans is 0 * C

8. Put the lid under warm water for a few minutes, but don’t let too much water hit the bottle

9. To avoid heat transfer to the colder object by conduction.
10. Radiation heat transfer