Physics, 26.09.2019 21:20, shartman22
Aroom contains 75 kg of air at 100 kpa and 15°c. the room has a 250-w refrigerator (the refrigerator consumes 250 w of electricity when running), a 120-w tv, a 1.8-kw electric resistance heater, and a 50-w fan. during a cold winter day, it is observed that the refrigerator, the tv, the fan, and the electric resistance heater are running continuously but the air temperature in the room remains constant. the rate of heat loss from the room that day is kj/h.
Answers: 3
Physics, 21.06.2019 22:30, tladitidimatso1783
A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?
Answers: 1
Physics, 22.06.2019 09:00, NatalieAllen11
What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.
Answers: 2
Aroom contains 75 kg of air at 100 kpa and 15°c. the room has a 250-w refrigerator (the refrigerator...
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