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Q3: A radioactive nuclide of atomic number Z
Q5: Two parallel plates are separated by 1.0
Q10: According to Lenz's law,the induced current in
Q17: The critical angle for two materials is
Q23: A resistor is made out of a
Q26: An electron and a proton move at
Q31: Human reaction times are worsened by alcohol.How
Q46: A metal wire is bent into a
Q47: A baseball is hit with a bat
Q53: You walk 53 m to the north,then