Diode-fare semiconductor devices.


Diodes only allow a current to pass in one direction in a circuit (forward direction).


The potential difference (p. D. ) at which the diode will allow a current to pass in the


circuit is called the threshold p. D.


Write a plan to find the threshold p. D. And its direction to enable a current to pass.


Your plan should include the following details:


a hypothesis


selection and justification of equipment, techniques or standard procedures


health and safety associated with the investigation


methods for data collection and analysis to test the hypothesis including:


the quantities to be measured


the number and range of measurements to be taken


how equipment may be used


control variables


brief method for data collection analysis.

Answer:

I believe you are talking about Emile Durkheim

Explanation: Fun Fact:

He is most well known as the author of On the Division of Social Labor The Rules of Sociological Method, , and The Elementary Forms of Religious Life

Degeneracy pressure and thermal pressure are two types of pressure that exist in different physical systems.

Thermal pressure arises from the motion of particles, such as atoms or molecules, that make up a gas. When these particles collide with each other or with the walls of a container, they exert a force that leads to pressure. This type of pressure is proportional to the temperature of the gas and is known as the ideal gas law.

Degeneracy pressure, on the other hand, arises from the quantum mechanical nature of particles. In quantum mechanics, particles are described by wave functions that satisfy certain rules.

When many particles are confined to a small space, such as in a white dwarf star or a neutron star, their wave functions begin to overlap, leading to a quantum mechanical effect known as degeneracy. This degeneracy leads to a repulsive force that counteracts the gravitational collapse of the star.

The pressure generated by degeneracy is independent of temperature and can be much higher than the thermal pressure in a gas.

In summary, thermal pressure is a result of the motion of particles in a gas, while degeneracy pressure is a result of the quantum mechanical properties of particles in a highly dense system.

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The maximum possible wavelength of the sound waves is determined by the distance between the two in-phase loudspeakers. After they were moved, the distance between them was 10 m. The maximum possible wavelength of the sound waves is 7.2  meters.

Wavelength is the distance between two consecutive points on a wave that are in phase. When the amplitude of two waves combines, it results in a constructive interference.

The wavelength of the sound wave can be determined using the following formula:

λ = 2d/n where,λ = wavelength, d = distance between the two loudspeakers n = number of nodes.

The distance between the two loudspeakers is 6 + 4 = 10 m. Also, there are two nodes between the loudspeakers, as we see from the fact that constructive interference occurs at 1/4 and 3/4 the distance.

Hence, using the above formula:

λ = 2(10 m) / 2 = 20 meters.

This wavelength is the smallest possible, when the two loudspeakers are at the furthest distance apart from each other. However, the loudspeaker moved 6 m sideways and 4 m forward, and as such the actual maximum wavelength is longer than 20 m. Hence, to get the maximum possible wavelength, we have to find the length of the diagonal from the original position to the moved position. This length is given by:

d² = (6 m)² + (4 m)²

d = 7.2 m.

Now, using the same formula:

λ = 2(7.2 m) / 2 = 7.2 meters.

Thus, the maximum possible wavelength of the sound waves is 7.2 meters.

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Answer: The answer is c!

A heater in a fish tank warming the water at the bottom of the tank is an another example of convection.

Convection, which is the extensive movement of molecules within gases and liquids, is the mechanism through which heat is transported. Although most of the heat transfer occurs as a result of fluid motion, conduction is initially employed to transfer heat from the item to the fluid.

Convection is therefore demonstrated by a heater in a fish tank warming the water at the tank's bottom.

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Answer:

the answer might be A and D if not sorry

Explanation:

Answer:

A. The nucleus can be either positively charged or neutral.

Explanation:

The nucleus of an atom contains protons and neutrons only. Whereas electrons revolve around the nucleus. Protons are positively charged, neutrons have no charge and electrons are negatively charged.

a). The concentration of free electrons is 2 × 10¹⁷/cm³.

b). p-side is the majority carrier, electrons are the minority carrier, and they are moving towards the n-side of the junction.

c). Electrons would generate the greatest current due to the electric field.

a) Calculation of majority and minority carriers for each side of an N+P junction:

For the n-side: The concentration of donor impurities, ND = 2 × 10¹⁷/cm³;

Therefore, the concentration of free electrons, n = ND = 2 × 10¹⁷/cm³

Since Si has a total of 4 valence electrons, it forms covalent bonds with four neighboring atoms, which share a single electron each.

Hence, silicon has a valence electron density of 4 atoms/cm³, and the total concentration of electrons in the n-type side is:

nn = n + (concentration of thermally generated electrons)

nn = 2 × 10¹⁷/cm³

For the p-side: The concentration of acceptor impurities, NA = 10¹⁴/cm³

Therefore, the concentration of free holes, p = NA = 10¹⁴/cm³

Since Si has a valence electron density of 4 atoms/cm³, the total concentration of holes in the p-type side is:

pp = p + (concentration of thermally generated holes)pp = 10¹⁴/cm³

b) Since the n-side is the majority carrier, holes are the minority carrier, and they are moving towards the p-side of the junction.

In contrast, since the The minority carrier, electrons, are travelling from the p-side of the junction to the n-side. The p-side is the majority carrier.

c) The flow of current in a semiconductor is determined by the drift of charge carriers. In an electric field, both holes and electrons will move in opposite directions, with the direction of their movement determined by the direction of the electric field.

However, the mobility of electrons is higher than that of holes, which implies that the concentration of electrons and their mobility are responsible for the flow of current in a semiconductor. As a result, electrons would generate the greatest current due to the electric field.

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Answer:

The locus of points where the electric field due to these lines is zero is;

Along the line between the lines closer to line#1 than line #2

Explanation:

The charges on the parallel lines #1 and #2 = Positive linear charge

The charge density on line #2, λ₂ = 2 × The charge density on line #1, λ₁

Therefore, we have;

λ₂ = 2 ×  λ₁

Electric field strength, E, is given as follows;

\(E = \dfrac{\lambda}{2\cdot \pi\cdot \epsilon_0\cdot d}\)

Therefore;

\(E_1 = \dfrac{\lambda_1}{2\cdot \pi\cdot \epsilon_0\cdot d}\)

\(E_2 = \dfrac{\lambda_2}{2\cdot \pi\cdot \epsilon_0\cdot d} = 2 \times\dfrac{\lambda_1}{2\cdot \pi\cdot \epsilon_0\cdot d}\)

E₂ = 2·E₁

E₂/2 = E₁

E₂/(2·d) = E₁/d

The strength of the electric field at a given distance from line #2 is 2 times the strength of the electric field from line #1 at the same distance

Therefore the strength of the electric field will be the same at a point twice the distance from line #2 than from line #1 which is a point closer to line #1 than line #2.

Answer:

\(\boxed {\boxed {\sf 6000 \ Joules}}\)

Explanation:

Work is the product of force and distance.

\(W=F*d\)

The force is 500 Newtons and the couch is raised 12 meters above the ground.

Substitute these values into the formula.

\(W=500 \ N * 12 \ m\)

Multiply.

\(W=6000 \ N*m\)

\(W= 6000 \ J\)

The work done to move a 500 Newton couch 12 meters is 6000 Joules. Therefore, choice D is correct.

Answer:

We know that

Work = Force × Displacement

Work = 500 × 12

Work = 6000 J

\( \\ \)

Answer:

no kap

Explanation:

A specially constructed velocity-selector accepts a beam of molecules from an oven at a temperature T but blocks the passage of molecules with a speed greater than the mean. A specially constructed velocity-selector accepts a beam of molecules from an oven at a temperature T but blocks the passage of molecules with a speed greater than the mean.

In the given scenario, the velocity-selector allows only the molecules with speeds less than or equal to the mean speed to pass through while blocking those with speeds greater than the mean. We need to determine the mean speed of the emerging beam relative to the initial value. In a gas at a given temperature T, the distribution of molecular speeds follows the Maxwell-Boltzmann distribution. This distribution is characterized by a peak at the most probable speed, which is also equal to the mean speed of the molecules. When the velocity-selector blocks the molecules with speeds greater than the mean, it effectively reduces the overall speed distribution of the molecules. As a result, the mean speed of the emerging beam will be lower than the initial mean speed.However, the exact reduction in mean speed cannot be determined without additional information about the shape of the velocity distribution and the cutoff criteria of the velocity-selector. The reduction in mean speed will depend on factors such as the temperature of the oven and the specific design of the velocity-selector. Therefore, without further information, it is not possible to calculate the precise value of the mean speed of the emerging beam relative to the initial mean speed.

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Answer:

acceleration = 0.013 m/s²

Explanation:

formula for acceleration is

a = (v-u) / t

a= (0.7-0.3) / 30

= 0.013

The acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²

Acceleration is defined as the change in velocity of a body with respect to time. Mathematically:

\(a=\frac{v-u}{t}\)

v is the final speed = 0.7m/s

u is the initial speed = 0.3m/s

t is the time taken = 30seconds

Substitute the given values into the formula:

\(a=\frac{0.7-0.3}{30}\\a=\frac{0.4}{30}\\a = 0.0133m/s^2\)

Hence the acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²

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The current through each resistor is 13 A.

To calculate the current in each resistor, we can use Ohm's law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them.

In this case, we are given the current and the resistance of each resistor, so we can use Ohm's law to calculate the voltage across each resistor, and then use the current to find the current through each resistor.

Let's start with the first resistor, which has a resistance of 2 ohms:

V = IR

V = (13 A) x (2 ohms)

V = 26 V

Now, we can use the voltage and resistance to find the current through the first resistor:

I = V/R

I = (26 V) / (2 ohms)

I = 13 A

So, the current through the first resistor is also 13 A.

Next, we can repeat the same process for the other two resistors:

For the second resistor with a resistance of 3 ohms:

V = IR

V = (13 A) x (3 ohms)

V = 39 V

I = V/R

I = (39 V) / (3 ohms)

I = 13 A

So, the current through the second resistor is also 13 A.

For the third resistor with a resistance of 4 ohms:

V = IR

V = (13 A) x (4 ohms)

V = 52 V

I = V/R

I = (52 V) / (4 ohms)

I = 13 A

So, the current through the third resistor is also 13 A.

Therefore, the current through each resistor is 13 A.

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The smallest THHN/THWN copper grounded conductor that can be installed for service is 8 AWG when the ungrounded conductors are 1/0 THWN/THHN copper.

The National Electrical Code (NEC) provides guidelines for the installation of electrical systems in the United States. According to the NEC, the smallest THHN/THWN copper grounded conductor that can be installed for a service is 8 AWG when the ungrounded conductors are 1/0 THWN/THHN copper. The grounded conductor, also known as the neutral conductor, is an important part of the electrical system as it provides a return path for the current.

It is essential to ensure that the grounded conductor is appropriately sized to prevent overheating and other safety hazards. In the case of a service installation, the grounded conductor must be sized based on the size of the ungrounded conductors. The NEC provides a table that specifies the minimum size of the grounded conductor for different sizes of ungrounded conductors.

For 1/0 THWN/THHN copper ungrounded conductors, the table specifies a minimum size of 8 AWG for the grounded conductor. This means that the grounded conductor must be at least 8 AWG in size to ensure that it can safely carry the current from the ungrounded conductors. It is important to follow the NEC guidelines for the sizing of electrical conductors to ensure that the electrical system is safe and reliable.

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We are given:_______________________________________________

Initial velocity (u) = 0 m/s

acceleration (a) = 0.8 m/s²

time interval (t) = 8 seconds

final velocity (v) = v m/s

distance travelled (s) = s m

Solving for the final velocity:___________________________________

We know that:

v = u + at                                [first equation of motion]

v = 0 + (0.8)(8)                       [replacing the variables]

v = 6.4 m/s

Hence, the final velocity is 6.4 m/s

Solving for the distance travelled:_______________________________

We know that:

s = ut + 1/2(at²)                     [second equation of motion]

s = (0)(8) + 1/2(0.8)(8)(8)      [replacing the variables]

s = 1/2(6.4*8)

s = 25.6 m

Hence, the distance travelled is 25.6 m

Answer:

\(\frac{n}{t} = 30\ photons/s\)

Explanation:

The radiated power can be given in terms of the wavelength as follows:

\(Rasiated\ Power = \frac{nE}{t} = \frac{nhc}{\lambda t}\)

where,

Radiated Power = 1.2 x 10⁻¹⁷ W

n = no. of photons = ?

h = plank's constant = 6.625 x 10⁻³⁴ J.s

c = speed of light = 3 x 10⁸ m/s

λ = wavelength = 500 nm = 5 x 10⁻⁷ m

t = time

Therefore,

\(1.2\ x\ 10^{-17}\ W = \frac{n(6.625\ x\ 10^{-34}\ J.s)(3\ x\ 10^8\ m/s)}{(5\ x\ 10^{-7}\ m)(t) }\\\\\frac{n}{t} = \frac{1.2\ x\ 10^{-17}\ W}{3.975\ x\ 10^{-19}\ J}\\\\\frac{n}{t} = 30\ photons/s\)

Answer:

ultra sound... follow me

Answer:

Velocity.

Explanation:

It is given that, the officer reports that the suspect is traveling north at 100 miles per hour. It means the suspect covers a distance of 100 miles every hour and moving in North direction.

It shows the velocity of the suspect. This is because his speed and direction are given. Velocity is a vector quantity.

So, the officer has reported the suspect's velocity.

At the bottom of the journey, the passengers will be travelling at a speed of approximately 39.2 m/s.

Acceleration is the rate of change of an object's velocity over time. It is a vector quantity, meaning it has both magnitude and direction. Acceleration is usually denoted by the letter a in equations. It is the second derivative of position with respect to time, or the rate of change of velocity. Acceleration describes how quickly an object's speed changes with time. Acceleration can involve either an increase or decrease in speed, and it can involve either a change in direction or no change in direction.

This is because the velocity of a free falling object is equal to the square root of two times the acceleration of gravity times the height from which the object is dropped.
In this case, the height is 33.5 m, and the acceleration of gravity is 9.8 m/s2.
Therefore, the velocity at the bottom of the journey is equal to the square root of two times 9.8 m/s2 times 33.5 m, which is equal to 39.2 m/s.

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In constant velocity, acceleration is zero but in constant acceleration, velocity and acceleration are not zero.

A constant velocity of an object ensures that the rate of change of velocity with time is null, and hence, the acceleration of the object is zero.

A constant acceleration of an object ensures that the velocity of the object is changing continuously with time, and the velocity will not be constant.

Thus, in constant velocity, acceleration is zero but in constant acceleration, velocity and acceleration are not zero.

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Express the first vector as the sum of the second vector's scalar multiples to represent a vector as a linear combination of another vector.

Finding scalar coefficients that, when multiplied by the components of the other vector, will add up to the components of the original vector is necessary to represent a vector as a linear combination of another vector. For instance, if you have a vector (a, b) and another vector (c, d), you may find scalars x and y such that x(c, d) + y(a, b) = in order to represent the original vector as a linear combination of the second vector (a,b). You obtain x = (ad-bc)/(cd-bd) and y = (ac-bd)/ after solving for x and y. (cd-bd). The linear combination of the two vectors is then obtained by filling in the values of x and y.

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Answer:

Are you looking for the formula? because if so:

M L^2 T^-3 I^-2

Explanation:

May I have brainliest please? :)

A blackbody curve will have its maximum in the visible region of the electromagnetic spectrum.

The blackbody graph illustrates how the intensity of light that is radiated changes as a blackbody is heated to a specific temperature.

According to the blackbody graph, a blackbody radiates energy over the whole electromagnetic spectrum once it reaches a temperature of 3,000 K. However, at a wavelength of about 1000 nm, the energy is released most strongly. This is a part of the electromagnetic spectrum's infrared range.

A few other essential points about the blackbody graph:

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Answer:

To find the amplitude, wavelength, period, and frequency of a sinusoidal wave, write down the wave function in the form y(x,t)=Asin(kx−ωt+ϕ).

The amplitude can be read straight from the equation and is equal to A.

The period of the wave can be derived from the angular frequency (T=2πω).

Answer: The person above me is absolutely correct!

Explanation: The formula for calculating amplitude of a wave is:

x = displacement of wave (meter)

A = amplitude

ω = Angular frequency (rad/s)

t = Time period

ϕ = Phase angle

Happy to help, if I did!

Explanation:

The unit of volume derived from SI units(1) is the cubic meter, m3.

Chemists in a laboratory usually deal with much smaller volumes than cubic meters and the metric but non-SI units of liter or litre (L) and milliliter or millilitre (mL or ml) are in common use.

In 1964 the litre was redefined as being equal to exactly 1 cubic decimetre:

1 L = 1 dm3

So 1 milliltre = 1 cubic centimetre

1 mL = 1 cm3 (= 1cc)

Other metric units of measuring volume are given in the table below:

large volume → → → → → → → → → → small volume

name teralitre gigalitre megalitre kilolitre hectolitre decalitre decilitre centilitre millilitre microlitre nanolitre picolitre femtolitre attolitre

symbol TL GL ML kL hL daL dL cL mL µL nL pL fL aL

volume (L) 1012 L 109 L 106 L 103 L 102 L 101 L 10-1 L 10-2 L 10-3 L 10-6 L 10-9 L 10-12 L

The frictional force acts opposite to the relative motion between two surfaces in contact. The magnitude of the frictional force (in N) acting on the cart is 41.16 N.

According to the given question, the force applied to the cart by the spring scale, Fa = 10.5 N. The cart is moving towards the right with an acceleration of 1.75 m/s2 towards the right. We need to find out the magnitude of the friction force (in N) acting on the cart.

We know that the frictional force (Ff) opposes the relative motion between two surfaces in contact. Hence, it acts in the opposite direction of motion or impending motion.

In this case, the cart is moving towards the right with an acceleration of 1.75 m/s2 towards the right. Therefore, the direction of frictional force will be towards the left, i.e., opposite to the direction of motion.

We can use the formula to find the magnitude of the frictional force:

Ff = μk x N

Where μk is the coefficient of kinetic friction and N is the normal force.

Since the cart is moving, we can consider that the frictional force acting on it is kinetic friction. Therefore, we can use the coefficient of kinetic friction to calculate the magnitude of the frictional force.

Now, we need to find the normal force, N.

N = m x g

Where m is the mass of the cart and g is the acceleration due to gravity.

We do not know the mass of the cart. However, we can find it using the force applied to it by the spring scale.

Fa = m x a

Where a is the acceleration of the cart.

Substituting the given values, we get:

10.5 N = m x 1.75 m/s2
m = 6 kg

Now, we can find the normal force:

N = m x g
N = 6 kg x 9.8 m/s2
N = 58.8 N

We have found the normal force, N. Now, we can use the coefficient of kinetic friction to find the magnitude of the frictional force.

The coefficient of kinetic friction can vary depending upon the nature of the surfaces in contact. Here, it is not mentioned, so let us assume a value for it. The coefficient of kinetic friction for rubber on concrete is approximately 0.7.

Therefore, the magnitude of the frictional force is:

Ff = μk x N
Ff = 0.7 x 58.8 N
Ff = 41.16 N

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If 1.50 g of a reacts with 1.65 g of b, by using stoichiometry, he mass of C produced is: 2.20 g.

To solve this problem, we need to use stoichiometry. The balanced chemical equation shows that three moles of A react with one mole of B to produce two moles of C. We can use this ratio to calculate the amount of C produced when 1.50 g of A and 1.65 g of B react:

Calculate the number of moles of A and B:

n(A) = m(A) / M(A) = 1.50 g / 3.0 g/mol = 0.50 mol

n(B) = m(B) / M(B) = 1.65 g / 2.0 g/mol = 0.825 mol

Determine the limiting reactant: Based on the balanced equation, the amount of C produced depends on the amount of B that reacts. Therefore, B is the limiting reactant since it is present in a lower amount than what is needed for complete reaction.

Calculate the number of moles of C produced:

n(C) = (2/3) * n(B) = (2/3) * 0.50 mol = 0.333 mol

Calculate the mass of C produced: m(C) = n(C) * M(C) = 0.333 mol * 2.0 g/mol = 0.666 g. Therefore, the mass of C produced is 2.20 g (0.666 g / 0.333 mol).

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Complete question:

Consider The General Chemical Equation 3A+B 2C.

If 1.50 G Of A Reacts With 1.65 G Of B, What Is The Mass Of C?

Answer:

Gonads

Explanation:

The gonads, the primary reproductive organs, are the testes in the male and the ovaries in the female. These organs are responsible for producing the sperm and ova, but they also secrete hormones and are considered to be endocrine glands.

Hope this helps :)

B) mostly empty space themselves. The atoms in a granite block are arranged in a crystal lattice structure, with the individual atoms spaced relatively far apart from each other.

This means that, despite the solid appearance of the block, the majority of the volume is actually empty space correctly arranged in a crystalline structure, which means that the atoms are arranged in a highly ordered pattern. While it may seem like the block is a solid mass, the reality is that the atoms themselves are separated by small amounts of space, which means that the block is mostly empty space. To understand this concept better, it's important to remember that atoms are not solid spheres, but rather they consist of a nucleus that is surrounded by a cloud of electrons. The electrons occupy a relatively large amount of space compared to the size of the nucleus. Additionally, there is also space between the atoms themselves. In the case of granite, which is a type of igneous rock, the atoms are arranged in a specific crystalline structure that gives the rock its strength and durability. However, even in this tightly packed structure, there is still space between the atoms, which means that the rock is mostly empty space.

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The wave in which medium particles move perpendicular to the direction of wave is transverse wave. Option b is correct.

The wave in which medium particles move perpendicular to the direction of wave is a transverse wave. In a transverse wave, the motion of the particles in the medium is perpendicular to the direction of propagation of the wave. This means that when a transverse wave passes through a medium, the particles in the medium move up and down or side to side, perpendicular to the direction of the wave. Examples of transverse waves include light waves, electromagnetic waves, and waves on a string.

In contrast, in a longitudinal wave, the motion of the particles in the medium is parallel to the direction of propagation of the wave. Hence option b is correct choice.

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