Recent content by tsrgb

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    Set theory - expression describing subset

    Homework Statement I have two sets E and L. I have to show that E is a subset of L, using only complement, union and the empty set. I.e. all members of E also have to be members or L, but L may contain members not included in E.Homework Equations The Attempt at a Solution Am I right in...
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    How Is the Velocity of Bicycle Pedals Calculated?

    Thank you. I'll try that.tsrgb
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    How Is the Velocity of Bicycle Pedals Calculated?

    Homework Statement A bicyclist travels in a light head wind on a level, horizontal road. The bicyclist keeps a constant speed of v = 20 km per hour. He pedals evenly. The back wheel has a radius of r = 0.33 m. The back cog wheel has a radius of r[b] = 0.035 m. The front cog wheel has a radius...