What are semi- conductors?

Answers

Answer 1

Answer: a solid substance that has a conductivity between that of an insulator and that of most metals, either due to the addition of an impurity or because of temperature effects. answer from google

Related Questions

When the body is in water, how many times faster does it lose heat than when it is in still air? A) 2 B) 10 C) 100 D) 25
Which factors will increase the speed of a sound wave in the air?
Below are four statements about acceleration. Which statement is not correct? A Acceleration always involves changing speed. B Changing direction always involves acceleration. C Changing speed always involves acceleration. D Circular motion always involves acceleration.
What must exist for electric charges to flow?
what is conduction, convection and infrared radiation in relation to heat transfers?

When Emma pushes a bag with a force of 27 newtons, the coefficient of kinetic friction between the bag and the floor is 0.23. What is the normal force acting on the bag by the floor?

Answers

This can be answered by manipulating the formula for the coefficient of kinetic friction, which is as follows:

Let: μ = coefficient of kinetic friction
F = force
N = normal force

μ = F / N

Substituting the given values:

0.23 = 27N / N
N = 27 / 0.23
N = 117.39 N

Maria’s father started a fire in the fireplace. He crumpled some paper, lit a match, and soon the logs in the fireplace were burning. In this case, the stored chemical energy in the logs was changed intoA) electrical energy.
B) mechanical motion.
C) heat and light energy.
D) electrical and heat energy.

Answers

As per the question the crumpled paper was burnt .

When the paper was burnt,it produces light.One also feels the sensation of heat.

The electrical energy is due to the flow of electrons. Here no electronic motion takes place.Hence no electrical energy will be produced.

Mechanical energy is the sum total of kinetic and potential energy.The kinetic energy is the energy gained due to the motion of the body and potential energy is the energy gained due to the position or configuration of the body.

Hence from above,we can get that the correct answer to the question is-C] Heat and light energy.

It was changed into heat and light energy.

The water table is _____. found in the unsaturated zone always in the same location the top layer of the saturated zone made of nonporous soil and rock

Answers

Answer: the top layer of the saturated zone

Explanation: Water table is also called as the groundwater table.The water table is the level below the surface of the ground where water is found.

The water table is the top layer of the saturated zone.The saturated zone is where the pores and fractures of the ground are saturated with water.

The water table keeps changing with the seasons and from year to year because it is affected by climatic variations and by the amount of precipitation.

Final answer:

The water table is the upper boundary of the saturated zone where all pores in soil and rocks are completely filled with water. It fluctuates depending on weather, seasons, and human activities, and it exists within porous soil and rock rather than nonporous ones.

Explanation:

The water table is the top layer of the saturated zone found below the Earth's surface, where all open spaces in soil and rocks are filled with water. This boundary separates the unsaturated zone (also called the vadose zone) above, which contains both air and water, from the saturated zone beneath, where all pores and fractures are fully inundated with water. Although the water table fluctuates with changes in weather, season, and human activity, it is not made of nonporous soil and rock. Instead, it resides within porous soil and rock that allow water to percolate down from the surface.

Learn more about Water table here:

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Practical examples of radition

Answers

Basically anything thats hot like the sun,microwave,fire,ect.

What does the measurement 6.5 V represent?

Answers

I'm not sure.
Where did you see it ?

If you saw it on a voltmeter, then it stands for "6.5 volts".
It tells you that the 'potential difference' or 'electromotive force'
between the two points connected to the meter is 6.5 volts.

-- If a 1-ohm resistor were connected between those two points,
then 6.5 coulombs of charge would move through the resistor every
second. We would say that the "current" through the resistor is
6.5 Amperes, or "six'na half amps".

-- Each coulomb of charge (6.25 x 10¹⁸ electrons) that moves from
one of those points to the other one either gains or loses 6.5 joules
of energy, depending on which direction it moves.

-- So the resistor would need to shed heat somehow, at the rate of
6.5 watts (6.5 joules per second). If it couldn't do that, then it would
go through an interesting series of changes. It would get warm, then
get hot, then glow cherry red, then glow bright red, then glow orange,
then glow bright yellow, then make a sound like a "POP". Then it would
break in the middle, and a little wisp of smoke would come out of it.
The two halves of the resistor would sink, sag from their wires, and
the current between the two points would stop.

We would say that the resistor had "fused", "failed", "melted", "burned out",
or "bought the farm" ... all because it couldn't get rid of heat fast enough.

Answer: Electric potential

What kind of energy does a rubber band have when it is stretched? a. elastic potential energy

b. gravitational potential energy

c. kinetic energy

d. chemical energy

Answers

Elastic potential energy. When you stretch a rubber band it has the "potential" to do work, to fly in a given direction. In doing so it changes it's elastic potential energy to kinetic energy.

Answer:

elastic potential energy

Explanation:

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