answer these questions please!!?

Question

6. Sunlight passes through a clear window and falls on a table inside a room which will be hotter after sometime, the glass pane or the table top, why?
7. Two cars of the same model locked and parked under the sun in an open parking lot. One of them is dirty white and the other is dark blue. Both are park from 9 am to 12 pm which of the two will be hotter inside at 12 noon? Why
8. At 4 in the afternoon 2 cars describe above are now in the shade .w/c of the 2 will be cooler at 5:30 pm?
9.Why are some thermos bottle advertise as good for 24 hrs while others are claimed to be able to keep liquids for 48 hrs?
10. Why do woolen blankets keep us warm better than cotton blankets?

Answer 1

Arwin, get off of that darned computer and DO YOUR OWN HOMEWORK!

Answer 2

6. The table will be hotter. Heat is generated by absorption of the light. The glass lets most of the light through without absorbtion; the table top absorbs much of the light (depending on its color), even if it is white, it will absorb more light than the glass.

9. The bottles that keep the temperature longer are made with more and better insulation. A true Thermos™ bottle has two layers of glass separated by vacuum, and gives good insulation. Some bottles called "thermos" just use foam insulation which is not a good.

Answer 3

The table top will get hotter, as it absorbs the infrared radiation which easily penetrates the window glass.

The blue car will get hotter, as it will absorb more infrared radiation. In the shade, the blue car will become cooler, as it will emit more infrared radiation. (The absorption rate must equal the emission rate, for thermdynamic reasons.)

Thermos bottles, if made of silvered glass with a vacuum chamber, do not differ materially in their heat-keeping properties, and whether the ad specifies one time period or another is mostly a matter of how much temperature variation one can tolerate.

Wool has many small interlocking fibers that make tiny air chambers; air, if confined, is a fairly good insulator. Cotton does not have this property.

Answer 4

7. The blue one. The lighter color reflects more of the light, and hence the heat.

8. At 4PM the two cars will have different starting temperatures. The blue one will radiate away more heat, but we don't know which will be coller at 5:30. It depends on how much their starting temperatures differed.

9. There's no knowing what manufacturers will claim for their products. Different insulating bottles have diferent amounts and kinds of insulation, and will keep liquids hot for different lengths of time.

10. Wool blankets are fluffier and trap more air. Still air is a good insulator of heat.

Answer 5

6.sorry cant help you
7.blue becuase of the light its absorbing
8.white becuase its still not aborbing light.
9.sorry cant help you
10.sorry cant help you