An electron and a proton are detected in a cosmic ray experiment, the first with kinetic energy 10 keV, and the second with 100 keV. Which is faster, the electron or the proton ? Obtain the ratio of their speeds. (electron mass = 9.11×10¯³¹ kg, proton mass = 1.67×10¯²⁷ kg, 1 eV = 1.60 ×10¯¹⁹ J).

An electron and a proton are detected in a cosmic ray experiment, the

1.	An electron and a proton are detected in a cosmic ray experiment, the first with kinetic energy 10 keV, and the second with 100 keV. Which is faster, the electron or the proton ? Obtain the ratio of their speeds. (electron mass = 9.11×10¯³¹ kg, proton mass = 1.67×10¯²⁷ kg, 1 eV = 1.60 ×10¯¹⁹ J).
Answer» An electron and a proton are detected in a cosmic ray experiment, the first with kinetic energy 10 keV, and the second with 100 keV. Which is faster, the electron or the proton ? Obtain the ratio of their speeds. (electron mass = 9.11×10¯³¹ kg, proton mass = 1.67×10¯²⁷ kg, 1 eV = 1.60 ×10¯¹⁹ J).

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