A mass of 2.205 kg of oxygen fills a weighted piston-cylinder device at 105.091 kPa and 43.483 oC. Device is cooled until the temperature is 23.014 oC. Determine the change in volume in liters

8. why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis? (hint: what did the article say about the advantages of digital signals? )

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.