Physics

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If molecules in a sample of gas moved so they completely missed each other, with no other effects, ... Started by ap345	1 Replies 52 Views	Jul 29, 2018 by alexanderhamilton
When a steaming-hot aluminum soda can is quickly inverted into a pan of water, the can is ... Started by hbsimmons88	1 Replies 45 Views	Jul 29, 2018 by zogaridan
The process of boiling water tends to A) warm the water. B) cool the water. C) both of these ... Started by jake	3 Replies 157 Views	Jul 29, 2018 by Cheesycrackers
When water boils, energy added to the water is counteracted by A) decreased pressure in the ... Started by MGLQZ	1 Replies 101 Views	Jul 29, 2018 by asdfasdf
A soda can with a small amount of water is on a hot stove. Soon steam comes from its opening. When ... Started by folubunmi	1 Replies 65 Views	Jul 29, 2018 by fraziera112
Water can change phase to become ice by A) extraction of energy. B) lowering the surrounding air ... Started by Lisaclaire	1 Replies 86 Views	Jul 29, 2018 by babybsemail
Food is cooked faster in a pressure cooker due to its A) greater rate of bubble formation in the ... Started by armygirl	3 Replies 53 Views	Jul 29, 2018 by kaylee05
A good cook knows that the temperature of violently boiling water is A) higher than that of ... Started by abern	1 Replies 88 Views	Jul 29, 2018 by kingfahad97
On sunny days, why do hot-air balloons suddenly rise when they drift over a wide road or a black ... Started by debasdf	1 Replies 106 Views	Jul 29, 2018 by amandanbreshears
Explain why white clothing keeps us cool, whereas black clothing warms us. Which is the better ... Started by pragya sharda	1 Replies 92 Views	Jul 29, 2018 by jaygar71
If you keep decreasing the kinetic energy of atoms in a liquid, the liquid may A) melt. B) ... Started by mynx	3 Replies 112 Views	Jul 29, 2018 by carlsona147
Melting and freezing are A) changes of phase. B) opposite processes. C) both of these D) ... Started by jparksx	1 Replies 59 Views	Jul 29, 2018 by bigcheese9
As ice is changed to water, energy is A) given to the ice. B) taken from the ice. C) neither of ... Started by kshipps	1 Replies 37 Views	Jul 29, 2018 by mathjasmine
Foreign ions introduced to water A) lower the freezing point of water. B) raise the freezing ... Started by sam.t96	1 Replies 187 Views	Jul 29, 2018 by nathang24
The temperature at which a liquid freezes is A) affected by foreign ions. B) the same ... Started by Zoey63294	3 Replies 51 Views	Jul 29, 2018 by Perkypinki
When salt is introduced to water, the temperature at which freezing occurs is A) quite ... Started by shenderson6	1 Replies 117 Views	Jul 29, 2018 by akemokai
When a gas changes phase to become a solid, energy is A) absorbed. B) released. C) ... Started by jho37	1 Replies 82 Views	Jul 29, 2018 by ong527
When a gas is changed to a liquid phase, the gas A) releases energy. B) absorbs energy. C) ... Started by jwb375	1 Replies 248 Views	Jul 29, 2018 by jennafosdick
We are warmed on a hot moist day because water molecules in the air striking our bodies A) ... Started by jasdeep_brar	3 Replies 103 Views	Jul 29, 2018 by matt
Steam burns are much more damaging than boiling-water burns because steam A) has a higher ... Started by fbq8i	1 Replies 87 Views	Jul 29, 2018 by memslove
Melting snow tends to A) warm the surrounding air. B) cool the surrounding air. C) neither of ... Started by Sportsfan2111	1 Replies 82 Views	Jul 29, 2018 by jsm54321
In walking barefoot on red-hot coals, to prevent bits of coal sticking to your feet, it would be ... Started by Redwolflake15	1 Replies 69 Views	Jul 29, 2018 by mmpiza
In walking barefoot on red-hot coals, providing that bits of coal do not stick to your feet, it ... Started by s.tung	3 Replies 77 Views	Jul 29, 2018 by cupcake16
As a block of ice at 0C melts, the block absorbs energy A) and decreases in temperature. B) and ... Started by ssal	1 Replies 75 Views	Jul 29, 2018 by owenfalvey
A Carnot engine is operated as a heat pump to heat a room in the winter. The heat pump delivers heat ... Started by fbq8i	1 Replies 226 Views	Jul 29, 2018 by connor417