Physics, 15.11.2019 03:31 pierreangie17
In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. in one room the radiator has a dark color (emissitivity = 0.830). it has a temperature of 64.1 oc. the new owner of the house paints the radiator a lighter color (emissitivity = 0.426). assuming that it emits the same radiant power as it did before being painted, what is the temperature (in degrees celsius) of the newly painted radiator?
Answers: 1
Physics, 22.06.2019 04:00
Determine the maximum r-value of the polar equation r =3+3 cos 0
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Physics, 22.06.2019 18:30
En un laboratorio, nakisha mezcla una solución de hidróxido de sodio con un indicador llamado fenolftaleína. cuando se combinan, crean una solución de color rosa. nakisha se pregunta si la mezcla de otras soluciones con fenolftaleína también creará este color rosa. ? cómo podría nakisha utilizar el proceso de investigación científica para determinar si la mezcla de otras soluciones con fenolftaleína también creará un color rosa? marque las que correspondan.
Answers: 2
Physics, 22.06.2019 19:40
22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?
Answers: 1
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