Combining which of the following substances with germanium will cause the germanium to emit free electrons?

2 answers:

5 0

The appropriate response is Gallium. It is a concoction component with image Ga and nuclear number 31. It is in gathering 13 of the occasional table and subsequently has similitudes to alternate metals of the gathering, aluminum, indium, and thallium.

vladimir1956 [14]3 years ago

4 0

On page 94 it explains that The electrical resistance of germanium or silicon can be reduced to a very small fraction of its original value by combining either material with an extremely small percentage of a suitable impurity. In one type of combination, called negative,or N-type,the impurity causes the germanium or silicon to emit free electrons. Arsenic, bismuth, and antimony are suitable impurities for this purpose. In another type of combination, called positive,or P-type,the impurity causes the germanium or silicon to collect free electrons. Aluminum, indium, and gallium are suitable impurities to cause this effect.

It is asking what would cause it to emit free electrons not what causes it to collect free electrons. So the Answer is A. Bismuth

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Explanation:

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The normal reaction, N also acting downward

Since the water is in circular motion, the net force must be equal to the centripetal force, so:

$N+mg=m\frac{v^2}{r}$

Where:

$g=9.8 m/s^2$

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r = 1.2 m is the radius of the circle

The water starts to spill out when the normal reaction of the pail becomes zero:

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When this occurs, the equation becomes:

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$v=\sqrt{(9.8)(1.2)}=3.4 m/s$

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3 years ago

psychology chapter 7, principles of learning; I am the process whereby animals are taught a complicated response by being reward

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Answer: Burrhus Frederic Skinner's Operant Conditioning.

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Skinner proposes the Law of Effect-Reinforcement. Here,he differentiated the positively reinforced behavior or the strengthened behavior, the negatively reinforced behavior (removal of the unpleasant experience), and weakened behavior because of punishment.

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