Physics, 04.11.2020 02:20, Hatter6998
Pentru încălzirea apei (c apă = 4 180 J/kg·K) cu Δt = 80 °C se folosește o instalație de
încălzire în care se arde o masă m = 6,2 g de alcool etilic, cu puterea calorică q = 27
MJ/kg. Știind că pierderile de căldură sunt de 40%, determină masa de apă care a
fost încălzită.
Answers: 2
Physics, 22.06.2019 09:00, edgarsandoval60
Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.
Answers: 3
Physics, 22.06.2019 10:10, princeofpowerjr
Which branches of natural science include the study of an organism that lived 10 million years ago
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Physics, 22.06.2019 15:30, Christyy1837
What are the similarities & differences between a thermistor and a light dependent resistor in physics?
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Physics, 22.06.2019 16:00, Christyy1837
What part of the ear is names after tools, such as the hammer and the anvil?
Answers: 1
Pentru încălzirea apei (c apă = 4 180 J/kg·K) cu Δt = 80 °C se folosește o instalație de
încălzire...
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