What is the wavelength of the light emitted that has a frequency of 2.65 x 10^14 hz

In which of these cases are the two wave points considered to be in phase with each other?

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.