Exercício Unicamp 2027 simulado - Considere que a energia cinética de cada elétron que compõe

Text for questions 61, 62, and 63. Advanced 3D manufacturing equipment is capable of producing miniatures of just over 100 μm of various colossal historical monuments. Details of the pieces are only revealed under an electron microscope. QUESTION 62 Consider that the kinetic energy of each electron that makes up the beam of an electron microscope is Ec = 4.5 keV. Knowing that the mass of the electron is me = 9.0 × 10⁻³¹ kg, and that 1 eV = 1.6 × 10⁻¹⁹ J, what is the speed of each electron in this beam? a) 4.0 × 10⁷ m/s. b) 28 × 10⁷ m/s. c) 8.0 × 10⁻¹⁴ m/s. d) 1.0 × 10¹⁷ m/s. Become a member of this channel, help me maintain this work that I do with so much care and also get benefits:    / @clareandoafisica   Support my work, pix: [email protected] If you are interested in private lessons directly with me, fill out the form: forms.gle/gXXgRrunB3d33bo37 And if you want to follow me on other social networks: Instagram:   / clara.tessaroli   TikTok: https://www.tiktok.com/@clara.tessaro...