Discover Questions

ASML is quoted wrong : is 159 and not 195 € !? Is there a green moon tonight or is it just a hoax? How do I prove (with calculus) m=-b/(2a) (the formula for finding maxs and mins)? Is a photon an electromagnetic wave and how does it compare to a gravity wave? While a dog runs forward, its owner pulls back with a 22.4 N force at a 115°direction, -42.3 J of work. How far did the dog move?