Using Similar Techniques That Were Originally Developed to Process Miniaturized $\mu$

question 54

Multiple Choice

Using similar techniques that were originally developed to process miniaturized semiconductor electronics,scientists and engineers are creating Micro-Electro-Mechanical Systems (MEMS) .Consider a silicon post that is part of a MEMS device that is being heated by an electric current flowing through the post.The coefficient of thermal expansion for silicon is 3.2 * 10^-6 K^-1.The post is 1950 $\mu$ m tall and 45 $\mu$ m in diameter at room temperature.At any given time,you may assume that the temperature is constant along the entire length of the post,which strictly speaking is not the case.As the post heats up from room temperature to 492^oC,its height will be

• A)1950 \(\mu\)m.
• B)1953 \(\mu\)m.
• C)1947 \(\mu\)m.
• D)1956 \(\mu\)m.
• E)1944 \(\mu\)m.

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Definitions:

Synaptic Vesicle

A small organelle within a neuron that stores neurotransmitters for release at the synaptic cleft.

Latin Word

A word from Latin, an ancient language that has influenced many modern languages, including English, Spanish, and French.

Neuron

A nerve cell that transmits information through electrical and chemical signals, playing a critical role in the functioning of the nervous system.

Excitatory Neurotransmitters

Chemical substances that promote the firing of neurons, facilitating communication within the brain and nervous system.