What scientific discovery did daniel bernoulli work on with leonhard euler?

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created

What practical value did astronomy offer to ancient civilizations?