Physics

Replies / Views	Last post
The solar constant for Earth is A) 0.7 kW/m2. B) 1.0 kW/m2. C) 1.4 kW/m2. D) more than 1.4 ... Started by OSWALD	1 Replies 27 Views	Jul 29, 2018 by orangecrush
When a hot object makes thermal contact with a cold object, the direction of A) temperature is ... Started by berenicecastro	1 Replies 56 Views	Jul 29, 2018 by Anna
The minimum amount of steam at 100C needed to melt 1 gram of 0C ice is A) 0.125 gram. B) 0.148 ... Started by lracut11	1 Replies 59 Views	Jul 29, 2018 by AmberC1996
A Thermos bottle has double glass walls with silver coating on the glass surfaces that face each ... Started by jman1234	3 Replies 204 Views	Jul 29, 2018 by joechoochoy
Hydrogen and oxygen molecules in a sample of gas have the same temperature. This means the hydrogen ... Started by erika	1 Replies 126 Views	Jul 29, 2018 by HandsomeMarc
Which involves a larger number of calories? A) the condensation of 1 gram of steam at 100C to ... Started by scienceeasy	1 Replies 53 Views	Jul 29, 2018 by Moriaki
The main difference between a fog and a cloud is A) water vapor content. B) density of vapor. ... Started by corkyiscool3328	1 Replies 67 Views	Jul 29, 2018 by KKcool
When fast-moving water molecules collide they tend to A) rebound without sticking. B) stick. C) ... Started by misspop	3 Replies 45 Views	Jul 29, 2018 by kalskdjl1212
Stored potatoes, beets, and rutabagas freeze at temperatures below zero degrees Celsius (rather than ... Started by geoffrey	1 Replies 70 Views	Jul 29, 2018 by fraziera112
Stored potatoes, beets, and rutabagas in an unheated well-insulated room can be protected from ... Started by mspears3	1 Replies 26 Views	Jul 29, 2018 by iceage
A heat pump can A) cool an environment. B) warm an environment. C) both of these D) neither of ... Started by Mr.Thesaxman	1 Replies 63 Views	Jul 29, 2018 by jaymee143
Wrapping a hot potato in aluminum foil significantly reduces the rate at which it cools by A) ... Started by cookcarl	3 Replies 37 Views	Jul 29, 2018 by Pswine
Double-pane windows contain nitrogen rather than air to prevent A) gas escape. B) thermal ... Started by leo leo	1 Replies 18 Views	Jul 29, 2018 by xiaomengxian
When you blow over hot soup to cool it you are helping A) to slightly increase air pressure atop ... Started by ishan	1 Replies 20 Views	Jul 29, 2018 by cegalasso
What occurs in a pan of water placed outdoors on a warm day? A) evaporation B) condensation C) ... Started by leilurhhh	1 Replies 50 Views	Jul 29, 2018 by iman
A boy scout will be burned more severely by A) 100 g of water at 100C. B) 100 g of steam at ... Started by K@	3 Replies 44 Views	Jul 29, 2018 by Kimmy
Morning dew on the grass is a result of A) evaporation of water. B) the open-structured form of ... Started by RRMR	1 Replies 41 Views	Jul 29, 2018 by olderstudent
In mountain regions, food cooked in boiling water cooks slower than when cooked at sea level. If the ... Started by APUS57	1 Replies 420 Views	Jul 29, 2018 by hugthug12
Compared with sea-level cooking, in cooking eggs by boiling in mountain regions you should boil the ... Started by james0929	1 Replies 226 Views	Jul 29, 2018 by akudia
For increased atmospheric pressure, the boiling point of water A) goes down. B) rises. C) ... Started by bb	3 Replies 90 Views	Jul 29, 2018 by Jadwiga9
Water in a car radiator sometimes boils explosively when the radiator cap is removed, which is due ... Started by sabina	1 Replies 43 Views	Jul 29, 2018 by fromAlphatoOmega22
Water can be turned to ice by A) lowering the surrounding air pressure. B) extracting energy. ... Started by krzymel	1 Replies 40 Views	Jul 29, 2018 by orangecrush
An inventor discovers a harmless and tasteless salt, which when added to water changes its boiling ... Started by ETearle	1 Replies 49 Views	Jul 29, 2018 by Jadwiga9
Dean teaches that the phenomenon of regelation is due to the A) freezing point of water. B) ... Started by bobypop	3 Replies 28 Views	Jul 29, 2018 by guyanai
When liquids change to a solids, they A) absorb energy. B) release energy. C) both of these D) ... Started by RRMR	1 Replies 43 Views	Jul 29, 2018 by kalskdjl1212