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3 years ago

12

Which two statements describe reasons that semiconductors must be

2 answers:

Cerrena [4.2K]3 years ago

6 0

Answer:

They provide a source of electrons to be released by the photoelectric effect, and They provide a path through which released electrons move to form an electric current.

Explanation:

A p e x

stepladder [879]3 years ago

6 0

Answer:

The answer is B. They provide a source of electrons to be released by the photoelectric effect, and D.They provide a path through which released electrons move to form an electric current.

Explanation:

I took AP EX quiz.

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HELPPP TIMED The etiology of somatoform disorders may consist of all of the following except __________ factors.

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Answer:

b. biologucal

Explanation:

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3 years ago

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in baseball, a pitcher can accelerate 0.15kg ball from rest to 98 mi/hr in a distance of 1.7m. (a) What is the average force exe

Step2247 [10]

Answer:

F=84.68 N

Required force increases

Explanation:

By the equation

$v^{2}=u^{2} +2as\\ 98^{2}*1609.344^{2}/(60*60)^{2}=0+2*a*1.7\\a = 98^{2}*1609.344^{2}/((60*60)^{2}*2*1.7)\\a = 564.50m/s^{2} \\$

By newton's second law :

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When the mass increased the force increases as the equation.

F=ma

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3 years ago

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4 NaF + Br2 + Al(H3Li)2 -->

Agata [3.3K]

Answer:

Molecules are substances that contain two or more elements, if these elements are different, then the substance is also a compound.

However, considering only the definition of a molecule, it is evident that both CH4 and NaF are molecules as they contain more than one element.

Explanation:

hope this helps!!

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4 years ago