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Get Full Access to Engineering Mechanics: Statics - 14 Edition - Chapter 9 - Problem 9-75
Get Full Access to Engineering Mechanics: Statics - 14 Edition - Chapter 9 - Problem 9-75

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# Solved: Locate the center of mass (x, y, z) of the

ISBN: 9780133918922 126

## Solution for problem 9-75 Chapter 9

Engineering Mechanics: Statics | 14th Edition

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Problem 9-75

Locate the center of mass (x, y, z) of the homogeneous block assembly. y z x 150 mm 250 mm 200 mm 150 mm 150 mm 100 mm Prob. 975

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 Ento 2010 Week 12 Notes  April 4, 2016 o Mantids can “hear” the sonar of bats  Mantids dive to avoid the bats o Importance of “behavior” in mimicry:  Caterpillars avoid birds  Birds see leaf damage and find caterpillars  Cryptic caterpillars look like leaf or twig  Caterpillar eats leaf symmetrically= “no damage” o Hides behind leaf while eating o Eats part of leaf; then clips leaf= “no damage” o Order: Mantodea  Mantis=prophet  Common name: Mantis or mantid  Species: 1,800 o Mantids  Incomplete metamorphosis  Chewing mouthparts  0.5-6 in. long  raptorial forelegs  carnivorous  long thorax  eggs laid in ootheca  cryptic coloration o Mantis:  Sways back and forth prior to attack  Has spines on front legs to hold prey  Has elaborate chewing mouthparts  WHEN THEY CATCH IT THEY DON’T LET GO! o Why do female mantids eat their mates  Theories:  It releases male “inhibitions” and his sperm  He provides mated female with nutrients o But male is smaller-hard to eat him while mating o Preying mantis  Eggs are laid in an egg case=ootheca o Order: Phasmida  Phasma=apparition  Common name: walking sticks  Species: 2,500 o Walking sticks  Incomplete metamorphosis  Chewing mouthparts  Long and slender body  Cryptic coloration  Feed on plants  Feign death when threatened  Autotomy: loss of a leg to escape o Mantis:  Is a generalist predator  Uses antennae to recognize prey  Exerts selective pressure: prey with best mimicry survive  April 6, 2016 o Ethnoentomology : cultural importance of insects o African Desert  Dig toxic beetle pupae from soil  Squish insects onto arrows o Darrel Posey  P.h.D.-UGA 1979  Ethnoentomology of the Kayapo of Central Brazil o Kayapo  Agricultural-but few insect pests  Main pest=mosquito (body paint)  Eat: ants, bee larvae, wasp larvae o Kayapo use of insects  Place ant colony near crop  Cultivate ant plants  Wasp colony in banana tree o Kayapo  Ceremony to acquire power of wasps  Young men hit large wasp nest  Wasp nest=the Universe o Vincent Holt  Why Not Eat Insects  1885 o Insects are nutritious  Protein  Fat  Vitamins (A and D) o Australian Aborigines eat:  Beetle larvae:  Witchetty Grubs (taste like chicken) o New Guinea  Sago Palm provides:  Starch=80% calories  Larvae of Capricorn beetle=protein snack o Insects are rich in in protein!  Botswana-charcoal grilled caterpillars  Thailand-steamed bamboo worms  Waterbugs  Steamed hornet grubs o Scott O’Grady  Shot down over Bosnia  Survived by eating bugs o 1995  Chinese female runners broke many track records  Were they using illegal drugs o No-they ate a caterpillar infected with a fungus o South American Indians eat:  Tarantulas:  Capture tarantulas-avoid venom and toxic hairs  Barbecue tarantulas-taste like shrimp  April 8, 2016 o Insects in the Arts  Butterflies are favorable subject o Bubonic Plague  Ring around the rosies  A pocket full of posies  Ashes ashes  We all fall down o Ogden Nash: Fleas  Adam had ‘em o Poetry: Robert Frost  Fireflies in the Garden  Design (Spider & Moth)  Departmental (Ants)  The Road Not Taken (Silent Spring) o Insects in language:  Busy as a bee  Grubby  Roach  Social butterfly  Waspish o Insects in music  “Flight of the Bumble Bee”  Rimsky-Karsakov o Mariah Carey- ‘Butterfly” o Maria Merian  Combined art and entomology  Born in Germany  Went to South America at age 52  Painted: larvae, pupae, and adult insects with hostplant o Humor  Gary Larson  Ento 2010 at Washington State University Far Side  Insects appear in cartoons more often in winter o Insects in movies  Friendly “insects” humanized  People use no common sense  Frequent biological errors: very large insects can’t breathe o Greatest insect movie:  THEM (1954)  Giant ants mutated by H-bomb invade Los Angeles sewers

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##### ISBN: 9780133918922

The full step-by-step solution to problem: 9-75 from chapter: 9 was answered by , our top Engineering and Tech solution expert on 11/10/17, 05:25PM. Since the solution to 9-75 from 9 chapter was answered, more than 1014 students have viewed the full step-by-step answer. Engineering Mechanics: Statics was written by and is associated to the ISBN: 9780133918922. This textbook survival guide was created for the textbook: Engineering Mechanics: Statics, edition: 14. The answer to “Locate the center of mass (x, y, z) of the homogeneous block assembly. y z x 150 mm 250 mm 200 mm 150 mm 150 mm 100 mm Prob. 975” is broken down into a number of easy to follow steps, and 30 words. This full solution covers the following key subjects: Assembly, Block, center, homogeneous, locate. This expansive textbook survival guide covers 11 chapters, and 1136 solutions.

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