A rock is placed in a pot of water and, as a consequence, the water's temperature begins to rise. What happens to the rock's temperature during this process?
1.It drops.
2.It also rises.
3.It stays the same.
4.It is impossible to tell.
1
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Inside a house, stepping on a tile floor barefooted may feel almost cold, but stepping on carpet in an adjacent room feels comfortably warm. Why is this?
a. It's because the tile is below room temperature while the carpet is at room temperature. b. It's because the tile is at room temperature while carpet is normally warmer. c. It's because the thermal conductivity of tile is less than that of carpet. d. It's because the thermal conductivity of carpet is less than that of tile.
Astronomers can measure the magnetic fields of sunspots using the ____, which splits spectral lines into multiple components
a. Galileo effect b. Babcock effect c. Zeeman effect d. Maunder effect e. Payne effect
Due to absorption of shorter wavelengths by interstellar dust clouds, distant stars appear
A) brighter. B) redder. C) larger. D) bluer. E) to have a higher radial velocity.
Two ropes are spliced together as shown
A short time after the incident pulse shown in the diagram reaches the splice, the rope's appearance will be that in
a.
Physics & Space Science