Ask a New Question
Search
Questions and answers by
amela
Questions (7)
For safety in climbing, a mountaineer uses a nylon rope that is 50m long and 1.0cm in diameter. When supporting a 90kg climber,
1 answer
3,405 views
A Carnot engine operates between 170°C and 23°C. How much ice can the engine melt from its exhaust after it has done 4.5 104 J
3 answers
673 views
In a running event, a sprinter does 5.5 105 J of work and her internal energy decreases by 8.8 105 J. Determine the heat
1 answer
531 views
Carnot engine operates between 170°C and 23°C. How much ice can the engine melt from its exhaust after it has done 4.5 104 J
9 answers
600 views
Carnot engine operates between 170°C and 23°C. How much ice can the engine melt from its exhaust after it has done 4.5 104 J
0 answers
603 views
A gas is compressed at a constant pressure of 0.800 atm from 6.00 L to 1.00 L. In the process, 380 J of energy leaves the gas by
1 answer
599 views
In a running event, a sprinter does 5.5 105 J of work and her internal energy decreases by 8.8 105 J. Determine the heat
0 answers
408 views
Answers (8)
nevermind it is correct. Thank you very much.
do i just divide it by a 1000 to convert. Because I am getting the wrong answer
I give up
I get 2193.17
I don't understand the abbreviations and symbols { , .yyn .jrbn etc
I am really not sure how to do this
T1=273+170=443 K T2=273+23=296 K efficiency =(Q1-Q2)/Q1 =W/Q1 efficiency =(T1-T2)/T1 W/Q1 = (T1-T2)/T1 Q1=W•T1/(T1-T2) Q1= r•m r= 333•10⁵ J/kg W•T1/(T1-T2) =r•m m = W•T1/(T1-T2)• r = (4.5x10^4)•443/(443-296)•333•10⁵=4.5•10^12
Never mind i figured this one out.
