Large and small numbers are often best entered in exponential notation. For exam

Question

Large and small numbers are often best entered in exponential notation. For example, the mass of the earth is 5.98x1024 kg and the mass of an electron is 9.11x10-31 kg.  In Sakai exponential notation uses an E (or e) in front of the exponent so that the masses above (in kg) would be entered 5.98E24 and 9.11E-31. Note that there should be no spaces anywhere in the number, either before or after the E or the - sign. Enter your answers to the next question in exponential notation.

The charge of an electron is -1.60x10-19 C. Determine the charge to mass ratio of the electron (in C/kg). (Hint: divide the electron's charge by its mass; the answer is a negative number with a positive exponent)

Explanation / Answer

the charge to mass ratio = -1.6x10^-19/(9.1x10^-31) = - 0.175 x 10^12 = -1.75 x 10^11 C/kg

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