cookies Posted November 2, 2006 Share Posted November 2, 2006 I need help with hw .. heres the question please correct me if i am rong Ice is put in a cooler in order to cool the contents. To speed up the cooling process, the ice can be A. Wrapped in newspaper B. Kept out of contact with the food C. crushed. D. Drained of Ie water periodicly. ANSWER: C. crushed. <-- pretty sure Crushed will have a larger surface area, therefore a larger area that can be cooled at once A volume of air has a temperature of 0degrees Celsius. An equal volume of air that is twice as hot has a temperature of A. 100degree Celsius B. 0degree Celsius C. 2degree Celsius * i think its this one not sure* D. 273degree Celsius ANSWER: B. 0degree Celsius, I thought of this as a math problem because of the key word "is" which means multiply .. so 0 times 2=0 Compared to a glass of ice water with ice in it, a glass of plain ice-cold water without ice on a warm day will warm up A. Faster * i think its this 1 not 100% sure* B. Slower C. In the same amount of time. ANSWER: C I think its in the same amount of time because even though both are not the same, they still warm up in the same rate. In the mountains, water boils at A. a lower temperature than at sea level B. Higher temperature than at sea level C. Same temperature as at sea level ANSWER: A Since the mountain is really high it takes a lower temperature? thats just a guess i am not sure. When a volume if air is compresed, its temperature A. Increase * im like 90% sure* B. Decrease C. Neither When a volume of air is compresed, its temperature A. Increase B. Decrease C. Neither ANSWER: A When volume increase temperature decrease but when volume is compressed temperature is increease? i think thats how it works If an object radiates more energy than it absorbs, it's A. temperature decreases B. Thermal energy decreases C. Both of these ANSWER: C I think when anything radiates more energy than it absorbs, it has something to do with both temperature decrease and thermal energy decrease The reason the sun's radiate energy is of shorter wave lenths than the Earth's is because the sun A. Has a higher temperature than Earth B. Has much more thermal energy C. is an energy source while the Earth is primily an energy reciever ANSWER: i am clueless rite here please help Link to comment Share on other sites More sharing options...
[Tycho?] Posted November 2, 2006 Share Posted November 2, 2006 I need help with hw .. heres the question please correct me if i am rong Ice is put in a cooler in order to cool the contents. To speed up the cooling process, the ice can be A. Wrapped in newspaper B. Kept out of contact with the food C. crushed. D. Drained of Ie water periodicly. ANSWER: C. crushed. <-- pretty sure Crushed will have a larger surface area, therefore a larger area that can be cooled at once Right A volume of air has a temperature of 0degrees Celsius. An equal volume of air that is twice as hot has a temperature of A. 100degree Celsius B. 0degree Celsius C. 2degree Celsius * i think its this one not sure* D. 273degree Celsius ANSWER: B. 0degree Celsius, I thought of this as a math problem because of the key word "is" which means multiply .. so 0 times 2=0 I dont know why you think "is" means multiply, it just means is. But regardless, you are wrong. 0 degrees is a temperature, so twice as hot cannot be the same temperature, even if the math seems to indicate it. 0 degrees celcius = 273 Kelvin. So the correct answer is 273 degrees celcius Compared to a glass of ice water with ice in it, a glass of plain ice-cold water without ice on a warm day will warm up A. Faster * i think its this 1 not 100% sure* B. Slower C. In the same amount of time. ANSWER: C I think its in the same amount of time because even though both are not the same, they still warm up in the same rate. Faster. The one with ice will heat up more slowly... because there is ice in, obviously. A is correct. In the mountains, water boils at A. a lower temperature than at sea level B. Higher temperature than at sea level C. Same temperature as at sea level ANSWER: A Since the mountain is really high it takes a lower temperature? thats just a guess i am not sure. Yes, higher altitude means lower pressure, means less energy required to make the water boil, so lower temperature. A is right. When a volume if air is compresed, its temperature A. Increase * im like 90% sure* B. Decrease C. Neither When a volume of air is compresed, its temperature A. Increase B. Decrease C. Neither ANSWER: A When volume increase temperature decrease but when volume is compressed temperature is increease? i think thats how it works Yup If an object radiates more energy than it absorbs, it's A. temperature decreases B. Thermal energy decreases C. Both of these ANSWER: C I think when anything radiates more energy than it absorbs, it has something to do with both temperature decrease and thermal energy decrease Correct. The reason the sun's radiate energy is of shorter wave lenths than the Earth's is because the sun A. Has a higher temperature than Earth B. Has much more thermal energy C. is an energy source while the Earth is primily an energy reciever ANSWER: i am clueless rite here please help The other questions were things usually taught in a chemistry class, but this is very much a physics question, and not one a layperson would likely know. A would be the best answer, B would be correct, but not really the answer, C doesn't have anything to do with the question. Link to comment Share on other sites More sharing options...
cookies Posted November 2, 2006 Author Share Posted November 2, 2006 Thank so much .. im goin to luv this forum Link to comment Share on other sites More sharing options...
weknowthewor Posted January 11, 2007 Share Posted January 11, 2007 Please feel free to interact with this forum. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now