Ch10Word

# Ch10Word - Chapter10...

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Chapter 10 ¿ ( b ) At a latitude of 66.5° the distance is  r Earth  cos 66.5°, so we have r Earth  cos 66.5°  ϖ   = (6.38 × 10 6  m)(cos 66.5°)(7.27  × –5  rad/s) =          185 m/s . ( c ) At a latitude of 40.0° the distance is  r Earth  cos 40.0°, so we have r Earth  cos 40.0°    = (6.38 × 6  m)(cos 40.0°)(7.27  × –5  rad/s) =          355 m/s . 8. The subtended angle in radians is the size of the object divided by the distance to the object.  A pencil with a diameter  of 6 mm will block out the Moon if it is held about 60 cm from the eye.  For the angle subtended we have θ Moon   D pencil / r pencil  ˜ (0.6 cm)/(60 cm)         ˜ 0.01 rad .
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## This note was uploaded on 02/20/2010 for the course E e taught by Professor E during the Spring '10 term at École Normale Supérieure.

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Ch10Word - Chapter10...

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