34 se selenium 78.94 how many protons (atomic number) does the element shown contain in each of its atoms? a) 68 b) 34 c) 17 d) 78.94

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The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.