Question

ĞƐĐŽďĞƌƚĂ ŶĂ &ƌĂŶĕĂ͕ ŚĄ ŵĂŝƐ ĚĞ Ƶŵ ƐĠĐƵůŽ͕ ƉĞůŽƐ ŝƌŵĆŽƐ WŝĞƌƌĞ Ğ :ĂĐƋƵĞƐ ƵƌƌŝĞ͕ Ă ƉŝĞǌŽĞůĞƚƌŝĐŝĚĂĚĞ ƉŽƐƐŝďŝůŝƚĂĂŐĞƌĂĕĆŽĚĞĞŶĞƌŐŝĂĞůĠƚƌŝĐĂůŝŵƉĂĞŝƐĞŶƚĂĚĞƌĞƐşĚƵŽƐĂƚƌĂǀĠƐĚĂĚĞĨŽƌŵĂĕĆŽŵĞĐąŶŝĐĂĂƉůŝĐĂĚĂ ĞŵĂůŐƵŶƐŵĂƚĞƌŝĂŝƐĐƌŝƐƚĂůŝŶŽƐ͘ƐƐĂƐĚĞĨŽƌŵĂĕƁĞƐƉŽĚĞŵƐĞƌ͕Ɖ ŽƌĞǆĞŵƉůŽ͕ŽŵŽǀŝŵĞŶƚŽĚĞĐĂƌƌŽƐĞĚĞ ƉĞƐƐŽĂƐŶĂƐƌƵĂƐ͕Ğŵ shoppingsĞĞŵĚĂŶĐĞƚĞƌŝĂƐ͘ hŵĚŽƐŝŵƉĞĚŝƟǀŽƐƉĂƌĂŐĞƌĂĕĆŽĚĞĞŶĞƌŐŝĂĞůĠƚƌŝĐĂĞŵůĂƌŐĂĞƐĐĂůĂĠŽĐƵƐƚŽĚĞƉƌŽĚƵĕĆŽĚŽƐĐƌŝƐƚĂŝƐ ;^ŝK ͕ĂdŝK Wďƌ Ti K WďƌK ŶKͿĞ͕ƉƌŝŶĐŝƉĂůŵĞŶƚĞ͕ĂďĂŝǆĂĐŽŶǀĞƌƐĆŽĚĞĞŶĞƌŐŝĂ͘ 2 ϯ͕ ǆ ;ϭͲǆͿ ϯ͕ ϯ͕ EĞƐƐĞ ĐŽŶƚĞǆƚŽ͕ Ƶŵ ĚŽƐ ƉĂƌąŵĞƚƌŽƐ ŵĂŝƐ ŝŵƉŽƌƚĂŶƚĞƐ ŶŽƐ ŵĂƚĞƌŝĂŝ Ɛ ƉŝĞǌŽĞůĠƚƌŝĐŽƐ Ġ Ž ĐŽĞĮĐŝĞŶƚĞ ĚĞ ĂĐŽƉůĂŵĞŶƚŽĞůĞƚƌŽŵĞĐąŶŝĐŽK2͗ 2 Energia el´etrica convertida pelo cristal piezoel´etrico K = Energia mecˆanica aplicada ao cristal piezoel´etrico ŽƐŵĂƚĞƌŝĂŝƐůŝƐƚĂĚŽƐ͕ƋƵĂůĚĞůĞƐĂƉƌĞƐĞŶƚĂƵŵĨĂƚŽƌĚĞĂĐŽƉůĂ ŵĞŶƚŽĞůĞƚƌŽŵĞĐąŶŝĐŽŝŵƉŽƐƐşǀĞů͍

Accepted Answer

E) KP bZrO = 1, 00 3 26 E'E,Z/

Answer

A) K Si O = 0, 10 2

Answer

B) KZn O = 0, 35

Answer

C) KBaT iO = 0, 49 2

Answer

D) KP bZr T i O = 0, 72 x (1−x) 3

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