MANOS ME AJUDEM COM ESSA QUESTÂO JA TO DUAS HORAS NELA Os motores elétricos comportam-se como receptores que utilizam a tensão para realizar trabalho. No entanto, como nos geradores, eles aquecem devido ao efeito joule. Imagine um motor que, quando em funcionamento, dissipa 8 W e tem uma força contraeletromotriz (fcem) de 12 V. Considerando estas informações e os estudos desenvolvidos sobre os receptores. Qual a resistência interna desse motor quando ligado a uma tensão de15 V

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

What property of an object determines its inertia?