Physics, 16.02.2021 02:10 hehelupesss5245
Noah en Meryem testen een zonnespiegel, zie de afbeelding. De spiegel bundelt de warmtestraling van de zon naar één punt. Op die plek hebben ze een zwarte pan met 2,0 kg water gezet. De oppervlakte van de spiegel is 3,0 m2. De warmtestraling van de zon is op een heldere zomerdag 1,0 kW m−2. De spiegel weerkaatst hiervan 80%.
Norah en Meryem willen dat de temperatuur van het water met 80 °C stijgt. Neem aan dat het water 50% van alle warmtestraling die op de pan valt opneemt. De warmtecapaciteit van water is 4,18∙103 J kg−1 K−1.
Hoeveel minuten duurt dit opwarmen?
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Noah en Meryem testen een zonnespiegel, zie de afbeelding. De spiegel bundelt de warmtestraling van...
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