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Leni [432]
3 years ago
14

Materials with resistivities between those of good conductors and those of insulators are called:

Physics
2 answers:
bogdanovich [222]3 years ago
8 0

semiconductors ... silicon, germanium etc ...

nevsk [136]3 years ago
8 0

Answer:

Semiconductors

Explanation:

The resistivity of conductors is low and the resistivity of insulators is high. The materials having resistivity between conductors and insulators are called semiconductors.

For example, silicon, gemanium, etc.

The elements having valency +4 are the semiconductors.

By increasing the temperature os a semiconductor, the conductivity increases or by the process of dopping the conductivity of semiconductor also increases.

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3 years ago
consider the three vectors, A=3i+4j, B=2i-2j+4k, and C=-i+5j-3k. Show that the sum of the three vectors can alternatively be com
REY [17]

Answer:

A+B+C=7j+k

Explanation:

A=3i+4j

B=2i-2j+4k

C=i+5j-3k

A=3i+4j

+

B=<u>2</u><u>i</u><u>-</u><u>2</u><u>j</u><u>+</u><u>4</u><u>k</u>

i+2j+4k

A+B=i+2j+4k

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C=<u>-i+</u><u>5</u><u>j</u><u>-</u><u>3</u><u>k</u>

7j+k

A+B+C=7j+k

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2 years ago
What is a electromagnet?
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An electromagnet is a soft metal core which is made into a magnet by passing the electric current through a coil which is surrounding it.
7 0
3 years ago
Read 2 more answers
If a pitch vibrates at 880 cycles, the octave below would vibrate at ____ cycles. 220 440 660 1760
eduard

Answer:

If a pitch vibrates at 880 cycles, the octave below would vibrate at 440 cycles.

Explanation:

Pitch of sound is defined as relative highest and the lowest point of sound. The pitch is dependent on frequency of vibration.

Octave is defined as a tone which is formed due to merging of two different tone. The resultant tone is merged so well that it sound like a single tone.

Thus, Number cycle in octave = \frac{number of cycles in a pitch}{2}

Number cycle in octave = \frac{880}{2}

Number cycle in octave = 440

Thus, If a pitch vibrates at 880 cycles, the octave below would vibrate at 440 cycles.

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