What makes an extrinsic semiconductor different from an intrinsic semiconductor? The number of electrons and holes is different in an extrinsic semiconductor. The number of electrons and holes is the same in an extrinsic semiconductor. Extrinsic semiconductors contain impurities that either add electrons or holes. Intrinsic semiconductors do not. Intrinsic semiconductors contain impurities that either add electrons or holes. Extrinsic semiconductors do not.

Answer:

4 A

Explanation:

From the question given above, the following data were obtained:

Voltage (V) = 12 V

Resistance (R) = 3 Ω

Current (I) =?

From ohm's law,

Voltage (V) = Current (I) × Resistance (R)

V = IR

With the above formula, we can obtain the current flowing in the circuit as illustrated below:

Voltage (V) = 12 V

Resistance (R) = 3 Ω

Current (I) =?

V = IR

12 = I × 3

Divide both side by 3

I = 12/3

I = 4 A

Therefore, the current flowing in the circuit is 4 A.

Answer:

The Sun derives all its energy from a fusion cycle. In that process, tiny hydrogen molecules combine into a continuous proton-proton chain to create larger helium nuclei. The above figure illustrates the fusion of hydrogen into helium.

Explanation:

Hope this helps.

Answer:

nuclear fusion

Explanation:

In this process, small hydrogen molecules fuse together to form bigger helium nuclei in a continuous proton-proton chain.

1. A JFET can be used as a voltage-controlled resistor in the saturation region of its V-I characteristics where the JFET acts as a variable resistor for the applied voltage at the gate. The reason why the V-I characteristics are linear in that region is that the JFET channel is wide open to the current and the voltage applied across it,

thereby making the drain-source voltage proportional to the gate-source voltage. This effect causes the JFET channel to act as a voltage-controlled resistor. When the gate-source voltage is zero, the channel is open, and the JFET acts as a resistance, making it very low resistance for conduction. When a voltage is applied to the gate, it reduces the width of the channel and hence reduces the current flow through it, thereby increasing its resistance.

2. We have been given the following circuit diagram:The drain current, Id = 4mA and the gate voltage, \(Vg = -2V.Id = (Vp - Vgs)^2/2RdGiven, Vp = -10V; Rd = 1kΩSo,\) we can calculate the value of Vgs using the above formula as follows:4mA = (-10V - Vgs)^2/2(1kΩ)8mA x 1kΩ = (-10V - Vgs)^2-8V = -10V - VgsVgs = -10V + 8VVgs = -2VTherefore, the drain current, Id = 4mA and the gate voltage, Vg = -2V.

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Answer: 1) D & 2) H

Explanation:

D. Tropical rainy &

H. Long-term average temperature  and precipitation for the area

Answer:

the amplitude

Explanation:

the maximum distance at which the object gets displaced from its mean position is know as the amplitude. the straight indicates the mean position and 'a' is the maximum height at which the object is displaced.

Answer:
1.)the surface of the table is set into vibration
2.)the initial vibration was larger
3.)The entire table vibrates

Explanation:hope this helps :3 have a good day xlXCherryColaXlx..(pls mark me brainliest)

Option D is the correct answer.

To demonstrate the hypothesis, the control experiment must be the nail with 8 coils.

A control experiment is the experiment that remains unchanged or unaffected by other variables.

A controlled experiment is simply an experiment in which all factors are held constant except for one: the independent variable.

For this given experiment, the number of paper clips lifted depends on the number of coils around the wire and voltage applied.

To demonstrate that for every 8 additional coils, you will be able to pick up two additional paper clips, we must have a control experiment, that is an experiment with which we will compare the out come.

This control experiment must be the nail with 8 coils.

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At high frequencies, a capacitor acts as an AC short circuit because its reactance decreases, while an inductor acts as an open circuit because its reactance increases. This behavior is due to the characteristics of these components at different frequencies.

At high frequencies, a capacitor acts as an AC short circuit, while an inductor acts as an open circuit.
A capacitor is a passive electronic component that stores and releases electrical energy. It consists of two conductive plates separated by an insulating material called a dielectric.

At high frequencies, the reactance of a capacitor decreases, allowing it to pass more current. The reactance of a capacitor is inversely proportional to the frequency of the AC signal. As the frequency increases, the reactance decreases, approaching zero. This behavior causes the capacitor to act as a short circuit, allowing the AC current to flow through it easily.

An inductor, on the other hand, is a passive electronic component that stores energy in a magnetic field. It consists of a coil of wire wound around a core material.

At high frequencies, the reactance of an inductor increases, limiting the flow of current. The reactance of an inductor is directly proportional to the frequency of the AC signal. As the frequency increases, the reactance increases as well. This behavior causes the inductor to act as an open circuit, preventing the AC current from flowing through it.

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The speed of the object is zero when the displacement of the object is maximum, which occurs when the velocity of the object is at its maximum value.  

The displacement is maximum when the magnitude of the momentum is maximum.

In simple harmonic motion, an object oscillates about its equilibrium position with a constant amplitude. The displacement of the object from its equilibrium position is given by the equation:

displacement = amplitude * sin(ωt + phase)

where amplitude is the maximum distance from equilibrium, ω is the angular frequency of the oscillation, t is time, and phase is the initial phase of the oscillation.

The magnitude of the momentum of the object is given by the equation:

momentum = mass * velocity

where mass is the mass of the object, velocity is its velocity, and ω is the angular frequency of the oscillation.

Therefore, the displacement of the object is maximum when the magnitude of the momentum is also maximum, which occurs when the velocity of the object is at its maximum value.

The kinetic energy of the object is maximum when the displacement is maximum.

In simple harmonic motion, the kinetic energy of the object is given by the equation:

kinetic energy = 1/2 * m *\(velocity^2\)

where m is the mass of the object, velocity is its velocity, and ω is the angular frequency of the oscillation.

Therefore, the kinetic energy of the object is maximum when the displacement of the object is maximum, which occurs when the velocity of the object is at its maximum value.

The acceleration of the object is zero when the displacement is maximum.

In simple harmonic motion, the acceleration of the object is given by the equation:

acceleration = -ω * amplitude * sin(ωt + phase)

where ω is the angular frequency of the oscillation, amplitude is the maximum distance from equilibrium, t is time, and phase is the initial phase of the oscillation.

Therefore, the acceleration of the object is zero when the displacement of the object is maximum, which occurs when the velocity of the object is at its maximum value.

The speed of the object is zero when the displacement is maximum.

In simple harmonic motion, the speed of the object is given by the equation:

speed = amplitude * cos(ωt + phase)

where amplitude is the maximum distance from equilibrium, ω is the angular frequency of the oscillation, t is time, and phase is the initial phase of the oscillation.

Therefore, the speed of the object is zero when the displacement of the object is maximum, which occurs when the velocity of the object is at its maximum value.  

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Ari's final vertical jump height is 5.2 m.

Ari's final vertical jump height is calculated from the law of conservation of energy as shown below.

P.E ( of Ari ) = P.E ( of Bari )

m1gh1 = m2gh2

where;

h1 = ( m2h2 ) / ( m1 )

h1 = ( 70 x 4 ) / ( 50 )

h1 = 5.6 m

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Answer:

Explanation:

24 i think

Answer:

B. 24

Explanation:

There are 24 atoms in one molecule of C6 H12 06. This chemical compound is made up of 6 atoms of carbon, 12 atoms of hydrogen, and 6 atoms of oxygen. We find the number of atoms by adding these numbers up. We than get:

6 + 12 + 6 = 12 + 12 = 24

Therefore, there are 24 atoms in the following chemical formula.

Answer:

The radius is  \(r = 3.21*10^{4} \ m\)

Explanation:

From the question we are told that  

   The density is  \(\rho = 2000 \ kg/m^3\)

    The speed is  \(v = 24 \ m/s\)

Generally the largest radius of the asteroid is mathematically represented as

      \(r = \frac{v^2}{ \sqrt{G * \rho * [\frac{4}{3} ] * \pi} }\)

=>   \(r = \frac{24^2}{ \sqrt{ 6.67*10^{-11} * 2000 * [\frac{4}{3} ] *3.142 } }\)

=>   \(r = 3.21*10^{4} \ m\)

Answer:200 5 -20 = v=323

Explanation:

Answer:

Explanation:

a. From the information provided in the question, the blue liquid is a solution. This is because a solution is a type of homogeneous mixture (that has an evenly distributed solute in a solvent) which is the reason the liquid was said to be blue (and not immiscible blue solid in a liquid) but after been exposed to heat became just a blue solid. Typically, a solution has a solute and a solvent (combined), the solute here is the blue solid while the solvent is the liquid that made the combination a liquid.

b. Since the dish containing the liquid was placed on a windowsill, it can be assumed that the dish was subjected to heat from the sun which caused the liquid (in the solution) to evaporate after exposure to the heat from the sun (over the weekend) leaving the blue solid solute (of the solution) to remain in the dish. This can be referred to as evaporation to dryness in separation techniques (if the goal was to intentionally separate the solid solute from the liquid solvent).

If 1 < 2 and the mass of the stoplight is 15 kg, the tension in the string T2 is T1 < T2.

The pulling force conveyed axially by a string, cable, chain, or other similar single constant object, or by every end of a rod, or other similar three-dimensional object, is referred to as tension. The response pair of forces acting at the ends of the aforementioned elements can also be used to describe tension.

Utilize the following formula, adding the three variables mentioned above, to determine the stress of a string in pounds: Tension is calculated as (UW x (2 x L x F)2) / 386.4. Simply multiply the result by 4.45 to get the result in Newtons.

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The filling time of the gas tank can be determined by considering the relationship between the volume of the tank and the discharge rate of gasoline.

To find the filling time, we need to determine how long it takes for the nozzle to discharge enough gasoline to fill the entire tank.

First, let's consider the units involved. The volume of the tank is given in liters (l) and the discharge rate of gasoline is given in liters per second (l/s).

The filling time can be calculated by dividing the volume of the tank (v) by the discharge rate (v˙):

Filling time = v / v˙

For example, let's say the volume of the tank is 50 liters and the discharge rate is 5 liters per second. The filling time would be:

Filling time = 50 l / 5 l/s = 10 s

So it would take 10 seconds to fill the tank in this example.

In summary, the correct relation for the filling time in terms of the volume of the tank (v) and the discharge rate of gasoline (v˙) is given by the formula: Filling time = v / v˙.

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Please find attached photograph for your answer.

Hope it helps.

Do comment if you have any query.

Answer:

Explanation:

X-axis = A (-7,-3) B (-7,-10) C (-1,-3) first they changed to the x-axis which is this. Just so you know on the x-axis the x-axis stay and the y-axis changed which is this.

When they reflect again on the y-axis the verter of A' is

A' (7, 3) = answer

On the y-axis the y- axis doesnt change but the x-axis changed.

Hope this help!

The frequency of oscillation of a pendulum can be calculated using the formula:

f = 1 / (2π) √(g / L),

where f is the frequency, g is the acceleration due to gravity, and L is the length of the pendulum.

In this case, the length of the pendulum is given as 2 m. The acceleration due to gravity can be taken as approximately 9.8 m/s².

To find the frequency, we need to determine the value of g / L. Using the given values, we have: g / L = 9.8 / 2 = 4.9 m/s².

Now we can substitute this value back into the formula for frequency:

f = 1 / (2π) √(4.9) ≈ 0.11 Hz.

Therefore, the frequency of oscillation of the pendulum is most nearly 0.11 Hz.

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If the universe was infinite in both extent and age then we would expect the night sky to be uniformly bright.

The universe can be described as all of space and time including planets, stars, galaxies, and all other forms of matter and energy. The Big Bang Theory has given the cosmological description of the development of the universe.

Space and time emerged together approximately 13 billion years ago, and the universe is expanding ever since the Big Bang. While the spatial size of the universe is unknown and we can only measure the size of the observable universe.

From further observational improvements, the Sun can be defined as one of a few hundred billion stars in the Milky Way, which is one of a few hundred billion galaxies and also many of the stars in a galaxy have planets in the universe.

According to the Big Bang theory, matter and energy initially have become less dense as the universe expanded.

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Answer:

false : In distance time graph,time is shown on the x -axis

Explanation:

distance = speed x time

a- d= 350 m/s x 30s

   d= 10500m

b- 5 mins = 300 sec

    d= 350 m/s x 300s

    d= 105000 m

c-  30 mins = 1800 sec

    d= 350 m/s x 1800 s

   d=  630000 m

Answer:

Electrical potential is measured in units called volts.

The object is 1.28 meters far from the starting point after 4.0 seconds.

To find the distance traveled by the object after 4.0 seconds, we will first determine the acceleration of the object on the inclined ramp.

Given that the object has traveled 0.080 meters after 1.0 seconds, we can use the formula:

d = 0.5 * a * t²

Where d is the distance, a is the acceleration, and t is the time. We can rearrange the formula to solve for acceleration:

a = 2 * d / t²

Substituting the given values:

a = 2 * 0.080 m / (1.0 s)²
a = 0.16 m/s²

Now that we have the acceleration, we can use the same formula to find the distance traveled after 4.0 seconds:

d = 0.5 * a * t²
d = 0.5 * 0.16 m/s² * (4.0 s)²
d = 0.08 m/s² * 16 s²
d = 1.28 meters

So, 4.0 seconds after being released, the object is 1.28 meters from the starting point.

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Answer:

9 hours

Explanation:

When the 2nd car catches up to the first, both cars will have gone the same distance.  

Distance = rate x time

Distance car 1 traveled when car 2 catches up = 90 mph(3 hr + t)

Distance car 2 traveled when it catches up to car 1 = 120t

90(3 + t) = 120t

270 + 90t = 120t

30t = 270

t = 270/30 = 9 hrs

Therefore, 12 hours after car 1 leaves the city and 9 hours after car 2 leaves the same city, they meet up.  

To prove it:

90(12) = 120(9) = 1080    Car 2 catches up to Car 1 1080 miles from the city

The volume of matter is primarily due to its electrons and protons.

Correct option is C.

Electrons are an essential element of all atoms, and contribute significantly to the overall volume of all matter. Protons are also essential elements of all atoms, and contribute to the overall volume of matter as well. Responsibility for the majority of the volume of matter lies with the electrons.

Electrons are negatively charged particles that are much smaller than protons. While electrons occupy the space in the atoms, protons are responsible for maintaining the atoms stable due to their positive charge. As such, electrons and protons both play an important role in maintaining the overall volume of matter.

Moreover, neutrons, which are located within the nucleus of atoms, also contribute to the overall volume of matter as they are needed to balance the positive charge of protons. In conclusion, electrons and protons are responsible for the majority of the volume of matter, as they are the essential elements that constitute atoms.

Correct option is C.

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Correct question is :

the volume of matter is due mostly to its

a. electrons.

b. protons.

c. both of these

d, none

The three main approaches to the identification of unknown bacteria are as follows:Phenotypic identification, Molecular identification and Biochemical identification

1. Phenotypic identification

Phenotypic identification involves the physical and chemical characteristics of the bacterial colonies and cells. In this method, bacterial cells are studied through microscopy, their ability to grow on various types of media, cellular morphology, and other factors that are easy to observe.

2. Biochemical identification

Biochemical identification is based on the biochemical reactions of bacteria. This method involves the use of different chemical and biochemical tests to identify the bacteria. The tests are designed to identify specific enzymes or metabolic pathways. The results of the tests are then used to identify the bacteria.

3. Molecular identification

Molecular identification involves the use of DNA analysis to identify bacteria. In this method, the DNA of the bacterial cells is isolated and analyzed. This method has become popular in recent years due to its accuracy and speed.

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At absolute zero temperature, the pressure of a fluid will approach zero.

What is absolute zero?

Absolute zero is the lowest temperature that can be reached in the universe and is defined as 0 Kelvin (K) on the Kelvin scale. It is equivalent to -273.15°C on the Celsius scale and -459.67°F on the Fahrenheit scale.

At absolute zero temperature (0 Kelvin), an object has zero thermal energy. This is because the definition of absolute zero temperature is the point at which an object has the minimum possible amount of thermal energy. At this temperature, all matter is in its lowest energy state and all random thermal motion has stopped.

Regarding the pressure of a fluid at absolute zero temperature, it is important to note that absolute zero temperature does not necessarily mean that the fluid is at a pressure of zero. The pressure of a fluid is determined by its temperature and its volume, not by its absolute temperature alone. The pressure of a fluid in a container is related to the average kinetic energy of the molecules in the fluid and their number density.

So, At absolute zero temperature, the pressure of a fluid will approach zero, but it will not be exactly zero because even at this temperature, the fluid molecules still have a non-zero kinetic energy due to their quantum mechanical motion.

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The length of the room is 96 ft.

Let L be the length of the room and W be the width of the room.

Since the length is twice its width, L = 2W.

Its area A = LW

= 2W × W

= 2W²

If each side were increased by 1 foot, then its new area is A' = (L + 1)(W + 1)

= (2W + 1)(W + 1)

= 2W² + 3W + 1

Since the room would contain 145 ft more if each side were increased by 1 foot, then its new area is A' = A + 145 = 2W² + 3W + 1

2W² + 145 = 2W² + 3W + 1

145 = 3W + 1

3W = 145 - 1

3W = 144

W = 144/3

W = 48 ft.

Since its length L = 2W, substituting W = 48 into the equation, we have

L = 2(48)

L = 96 ft

So, the length of the room is 96 ft.

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