Wednesday, September 14, 2011

Physicssssssss?

Hi all... i'm having some trouble solving the following:



What is -40 掳F in degrees Celsius?



What is temperature of 22 掳C in degrees Fahrenheit?



The air in a living room has a mass of 72 kg and a specific heat of 1,010 J/(kg 掳C). What is the change in thermal energy of the air when it warms from 20 掳C to 25 掳C?



Calculating the change in thermal energy of the water in a pond with a mass of 1,000 kg and a specific heat of 4,184 J/kg 掳C) if the water cools by 1 掳C.



Calculating the specific heat of a metal if 0.5 kg absorbs 9,000 J of thermal energy as it arms by 10 掳C.



Calculating the amount of thermal energy required to chnage a 0.45-kg block of ice at 0掳C to water at 0掳C if the heat of fusion of water is 334,000 j/KG.



Calculating the heat of vaporization for water is 2.26x(10 to the 6th) J/kg. What mass of liquid water at 100掳C can be changed to water vapor at 100掳C by adding 1.0x(10 to the 6th) J of thermal energy to the liquid water?



Calculating Solar Radiation: Averaged over a year in the central US, radiation from the Sun transfers about 200 W to each square meter of Earth's surface. If a house is 10 m long by 10 m wide, how much solar energy falls on the house each second?



-PLEASE HELP!! AND THANKS IN ADVANCE! =]Physicssssssss?
Looks like a homework assignment.

Here's a temperature converter, but you really should understand the process.

http://www.onlineconversion.com/temperat



Below is the formula to convert a Celsius scale temperature into degrees on the Fahrenheit scale (http://www.csgnetwork.com/tempconvjava.h



Tf = (9/5)*Tc+32; Tc = temperature in degrees Celsius, Tf = temperature in degrees Fahrenheit



It's going to get much tougher. If you want to pass physics, you really need to study every day and do your own homework.Physicssssssss?
homework.... /: (

Your trying to get millions of global strangers to answer a school assignment... Now I've seen everything!

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