The peregrine falcon is the fastest of flying birds (and, as a matter of fact,
is the fastest living creature). A falcon can fly 2.73 km downward in 35 s.
What is the average velocity of a peregrine falcon?

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

How does an observation about an object differ from an inference about that object

Give an example in which the electrical energy changes to light energy