The photoelectric effect is the basis of the spectroscopic technique known as photoelectron spectroscopy. An X-ray photon of wavelength 150 pm ejects an electron from the inner shell of an atom. The speed of the electron was measured as 2.14 x 107 m s–1. Calculate the electron’s binding energy (eBE) in electron volts.

When a comet collides with earth, it adds material to our planet and causes great damage. therefore, a collision like this is a a. destructive force b. constructive force c. geologic process and event d. constructive and destructive force

What is the empirical formula for c4h8o2

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean