Which of the following is true of an object with a net negative charge?

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

Phase changes are chemical changes. true or false

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.