Physics, 03.03.2020 05:04 taminazaka1
Two 20.0 g ice cubes at β 20.0 β C are placed into 285 g of water at 25.0 β C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature, T f , of the water after all the ice melts.
Answers: 3
Physics, 21.06.2019 14:00
Hurry click the links to open the resources below. these resources will you complete the assignment. once you have created your file(s) and are ready to upload your assignment, click the add files button below and select each file from your desktop or network folder. upload each file separately. your work will not be submitted to your teacher until you click submit. documents lab report guide file upload accepted file types: .ppt, .pptx, .xls, .xlsx, .doc, .docx, .zip, .pdf, .accdb, .msg delete all add files
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Physics, 21.06.2019 17:00
What would the difference of spectral lines emitted by hydrogen gas in distant galaxies which is normally found at a wavelength of 21 cm on earth, be observed at 21.1 centimeters?
Answers: 2
Physics, 21.06.2019 23:00
Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300Β° c, and the exhaust water is at 37Β° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?
Answers: 1
Physics, 22.06.2019 08:00
The arrival of in the early days of europaβs existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europaβs surface and in its atmosphere due to europaβs . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato
Answers: 3
Two 20.0 g ice cubes at β 20.0 β C are placed into 285 g of water at 25.0 β C. Assuming no energy is...
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