An owner of a home in the midwest installed solar panels to reduce heating costs. after installing the solar panels, he measured the amount of natural gas used y (in cubic feet) to heat the home and outside temperature x (in degree-days, where a day's degree-days are the number of degrees its average temperature falls below 65 degrees f) over a 23-month period. he then computed the least-squares regression line for predicting y from x and found it to be: y = 85 + 16x how much, on average, does gas used increase for each additional degree-day?
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Physics, 21.06.2019 22:00
Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch
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Physics, 22.06.2019 08:00
Who was the first scientist to measure speed as distance over time?
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Physics, 22.06.2019 09:00
Sobre transformações cÃclicas, são feitas algumas afirmações, determine quais estão corretas. i – a variação de energia interna em uma transformação cÃclica é nula; ii – o trabalho, em uma transformação cÃclica, é sempre positivo; iii – ao completar um ciclo, o gás tem a mesma temperatura com a qual começou a transformação; iv – uma transformação cÃclica é, obrigatoriamente, composta de transformações conhecidas, como adiabática, isocórica, etc: a) i e iii b) i e ii c) ii e iii d) i e iv e) iii e iv
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Physics, 22.06.2019 11:00
1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?
Answers: 1
An owner of a home in the midwest installed solar panels to reduce heating costs. after installing t...
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