The speed of an electromagnetic wave is equal to a. wavelength plus frequency b. wavelength times frequency c. wavelength divided by frequency d. frequency divided by wavelength

What is hidden during a lunar eclipse? isn't the moon hidden?

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

Two vectors are shown. which statement best compares the vectors? vector x has greater magnitude than vector y. vector y has greater magnitude than vector x. the vectors have the same displacement. the vectors have the same direction.