the energy gap in intrinsic silicon is 1.1 ev. assuming the fermi energy lies at the middle of the gap, a. what is the occupation probability at the bottom of the conduction band at 300 k? b. what is the occupation probability at the top of the valence band at 300 k? hint: the answer is not exactly 1.

Answer:

C. the blue colour of the Earth's sky

Explanation:

The Pleiades is a cluster of sister stars that are among the closest star cluster to earth.

The reflection nebula of the Pleiades is due to the scattering of the blue light from the hot blue luminous stars that dominate the star cluster. Th blue light is scattered from dust molecules, thought to be predominantly carbon compound like diamond dusts, and other compounds like iron.

The blue colour of the Earth's sky is the closest terrestrial phenomenon to the reflection nebula. On a clear cloudless day, molecules in the air scatter the blue component of light more than the other component colours of white light, giving the sky its characteristic blue coluor.

The common characteristics of the luminous nebula and the Earth's blue sky is that they both have their light scattered by the presence of small particles.

The given statement a constructor which has thrown an exception will also return a reference to its constructed object is false  because when an exception is thrown during the construction of an object, the constructor does not complete its initialization process.

As a result, the constructed object may be in an invalid or partially constructed state, which can lead to unexpected behavior if the object is used later in the program. A constructor cannot return a value, not even a reference to its constructed object. Instead, the constructor initializes the object's data members and sets up the object's state. If a constructor throws an exception, the object is not fully constructed and is therefore not valid. The exception can be caught and handled by the caller of the constructor.

To know more about constructor, here

brainly.com/question/16947389

#SPJ4

Answer:

Inertia

Explanation:

Part of Newton's Laws of Motion

This drawing helps us understand the contribution of each the magnetic field of each wire. Wire 1 will contribute with positive field for everything on its left, and with negative field for everything on its right. The opposite is true for wire 2, so, if we analyse regions I, II and III:

Region I: Wire 1 contributes with positive and Wire 2 contributes with negative. As any point on region I will be closer to Wire 1, its contribution will be more significant, and the field will be positive

Region II: Wire 1 and 2 contribute with negative field. Thus, the resulting field will be negative

Region III: Wire 1 contributes with negative field and Wire 2 contributes with positive field. As any point on region III will be closer to Wire 2, its contribution will be more significant, and the field will be positive.

Now all we have to do is calculate the value of the fields. The field on point P1 will have positive contribution from Wire 2 and negative contribution from Wire 1, which will be:

The field on the midpoint (distance d/2 from each wire) will be negative, as the contribution from both wires will be negative, thus:

The field on point P2 will be positive, which can be written as:

Summary:

a) Pmed = -37.8947uT into the screen

b) P1 = 0.8772uT out of the screen

c) P2 = 1.5789uT out of the screen

Microtubular structures are primarily held together by noncovalent forces, specifically electrostatic interactions and Van der Waals forces.

What is Microtubular structures?

Microtubular structures are cylindrical, hollow structures composed of protein subunits called tubulins. They are a component of the cytoskeleton, a network of filaments and fibers found in the cells of eukaryotic organisms. Microtubules have a range of important functions within cells and are involved in various cellular processes.

Microtubules are cylindrical structures composed of tubulin protein subunits. The stability and integrity of microtubules rely on the interaction forces between these subunits.

Electrostatic interactions play a significant role in holding microtubular structures together. The tubulin subunits contain charged amino acid residues that can attract or repel each other based on their electrostatic charges. These electrostatic forces contribute to the alignment and arrangement of tubulin subunits, promoting the formation and stability of microtubules.

Van der Waals forces also contribute to the cohesion of microtubular structures. Van der Waals forces are weak attractive forces between molecules or atoms resulting from temporary fluctuations in electron distribution. These forces help maintain the close packing and organization of tubulin subunits within the microtubule.

Together, these noncovalent forces, specifically electrostatic interactions and Van der Waals forces, play crucial roles in holding microtubular structures together and ensuring their stability and functionality.

To know more about Microtubular structures, refer here:

https://brainly.com/question/29997611#

#SPJ4

The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.

Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.

Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:

∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du

The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.

Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.

Let us work through the steps:

Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x

Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du

Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.

for such more questions on integration

https://brainly.com/question/87852

#SPJ8

3415.2 grams

Explanation

to solve this we can use a rule of three

Step 1

Let

water= 100-84%= 16%

so,

for the water , 1 mL = 1 gram , so

now, let represents the mass of the aluminiu, so

a) the ratio is the same, so we have a proportion

Step 2

finally, solve for x

so, the mass of the aluminum is

3415.2 grams

Capacitance of air-filled charged capacitor can be increased by "Decreasing the spacing between the plates of the capacitor". So option D is correct

A capacitor is an electronic component that stores electrical energy in an electric field. It consists of two conductive plates separated by an insulating material called the dielectric. When a voltage is applied across the plates, an electric charge builds up on each plate, creating an electric field between the plates. The amount of electrical energy stored in a capacitor is proportional to the charge on each plate and the voltage across the plates.

The capacitance of a capacitor can be increased by reducing the distance between its plates. The capacitance of a capacitor is directly proportional to the surface area of its plates and inversely proportional to the distance between them. So, as the distance between the plates decreases, the capacitance of the capacitor increases.

Increasing the charge on the capacitor (Option a) will not change its capacitance, but it will increase the voltage across the capacitor.

Decreasing the charge on the capacitor (Option b) will also not change its capacitance, but it will decrease the voltage across the capacitor.

Increasing the length of the wires leading to the capacitor plates (Option e) will not change the capacitance of the capacitor, but it may introduce some resistance in the circuit and affect the behavior of the capacitor.

To know more about capacitor check:

https://brainly.com/question/29100869

#SPJ1

Answer:

C. Forces always comes in pairs that act in opposite directions

Explanation:

I got it right when I chose it.

Answer:

c

Explanation:

it's correct trust me

If there are two blocks and the same net force is applied, the blue block has a smaller mass than yellow block, so the block that will have smaller acceleration is the yellow block.

Mass times acceleration, or F = (m) x (a), equals force. This means that in order to move an object at the same speed as an object with smaller mass, a stronger force is required. Newton's Second Law of Motion is this.

To accelerate more, you must exert greater force. This implies that there is a direct relationship between the two quantities.

If there are two blocks are subjected to the same net force, and the yellow block is heavier than the blue block. So, the block that will have the smaller acceleration is the yellow block.

Learn more about acceleration here: https://brainly.com/question/29314155

#SPJ4

Answer:8

Explanation: 134.4 divided by 16.8

The matrix is ​​the set of extracellular materials that will form a certain tissue. Through this there will be a physiological integration of the cells.

In the matrix there will be different macromolecules, mainly collagen, enzymes, glycoproteins, among others which will give support to the cells that will be immersed in the matrix. It will also be involved in the process of cell multiplication and cell movement, since it will allow communication between the different cells to coordinate their cell functions.

The extracellular matrix is ​​going to be composed, broadly speaking, of two components: interstitial matrix and the basal membrane. The interstitial matrix is ​​one that will be formed by polysaccharides and fibrous proteins that gives it the characteristic to be able to cushion the compressions to which it may be subjected.

To learn more about matrix visit: https://brainly.com/question/14748005

#SPJ1

In the 3s orbital of a hydrogen atom, the radial nodes can be determined byby finding the values of r where the amplitude of the orbital wavefunction is zero. The wavefunction for the 3s orbital can be written as:

ψ = (1/81√π)(2 - r/a_0)e^(-r/3a_0)

To find the radial nodes, we need to solve the equation (2 - r/a_0)e^(-r/3a_0) = 0. This equation gives us r = 2a_0 as the only radial node in the 3s orbital.

Similarly, for the 4p orbital, the wavefunction is given as:

ψ = (20 - 10p + p^2)pe^(-p/2)

To find the radial nodes, we need to solve the equation (20 - 10p + p^2)pe^(-p/2) = 0. However, the given expression is not in terms of r, but in terms of p = r/a_0. We can rewrite the equation as (20 - 10(r/a_0) + (r/a_0)^2)(r/a_0)e^(-r/2a_0) = 0. By solving this equation, we can find the values of r where the 4p orbital's amplitude is zero and locate the radial nodes.

 To learn more about Wavefunction click here:brainly.com/question/29089081

#SPJ11

By examining the influence of surface area and material composition on thermal energy transfer in a controlled experiment, we can gain valuable insights into the fundamental factors that affect heat exchange. This knowledge can have practical applications in fields such as engineering, materials science, and energy efficiency.

A good question about the variables that affect thermal energy transfer in a controlled experiment could be: How does the surface area and material composition of an object influence the rate of thermal energy transfer?

By focusing on the surface area and material composition, we can investigate how these two variables affect the transfer of thermal energy. The surface area of an object determines the amount of area available for heat exchange, potentially affecting the rate of energy transfer. The material composition, on the other hand, can impact factors such as thermal conductivity, specific heat capacity, and emissivity, all of which play a role in how effectively heat is transferred.

To conduct the experiment, you can select objects of different materials and surface areas, such as metal plates or plastic blocks with varying dimensions. By exposing them to a controlled heat source and measuring the temperature change over time, you can analyze how the chosen variables affect thermal energy transfer.

This investigation would provide insights into the fundamental factors that influence heat exchange and can be used to inform practical applications in various fields such as engineering, materials science, and energy efficiency.

To learn more about thermal energy

https://brainly.com/question/3022807

#SPJ8

The specific heat capacity of the metal is 32427.7 J/kg/°C if the mass of a metal is 50 gm.

The specific heat capacity of a substance is the heat required to increase the temperature of the substance of unit mass by one degree. Its SI unit is J/kg/°C.

Mass of the metal= 50 g= 0.05 kg

Temperature of the metal = 100°C

Mass of the water = 200 g = 0.2 kg

Mass of the calorimeter = 80 g =0.08 kg

Temperature of the calorimeter and water combined= 14°C

Equilibrium temperature = 70°C

Specific heat capacity of the copper = 390 J/kg/°C

Specific heat capacity of the water = 4187 J/kg/°C

Heat lost by the metal = heat absorbed by the water and calorimeter

0.05×S×(100-70) = (0.2×4187+0.08+390) × (70-14)

1.5×S = 48641.6

S= 32427.73 J/Kg/°C

To know more about specific heat capacity, click here

https://brainly.com/question/29766819

#SPJ4

The maximum allowable length for float glass jalousies is 150 cm.

What is Float Glass?

Float glass refers to a type of glass that is made by floating molten glass on a bed of molten metal. Float glass is a popular type of glass because it is both strong and durable.

Float glass is often used in windows, mirrors, and other applications where high-quality glass is required.

What is a Jalousie?

A jalousie is a type of window that consists of a series of parallel glass panes that are set in a frame. Jalousies are typically designed to allow air to flow through them, which makes them ideal for use in hot climates where ventilation is important.

What is the maximum allowable length for float glass jalousies?

The maximum allowable length for float glass jalousies is 150 cm. This means that any jalousies that are made from float glass cannot exceed this length. This limit is in place to ensure that the glass is strong enough to support itself and to prevent it from breaking under its own weight.

learn more about  float glass on

https://brainly.com/question/29918130

#SPJ11

Answer:

Electrolysis is the passing of a direct electric current through an ionic substance that is either molten or dissolved in a suitable solvent, producing chemical reactions at the electrodes and decomposition of the materials.

:

Answer:Electrolysis, process by which electric current is passed through a substance to effect a chemical change. ... The process is carried out in an electrolytic cell, an apparatus consisting of positive and negative electrodes held apart and dipped into a solution containing positively and negatively charged ions.

Explanation:

Answer & Explanation FROM YOUR TEACHER:

The blocks does not have the same amount of thermal energy

The mass and temperature of an item are both inversely correlated with thermal energy. Thermal energy is expressed as follows:

Mass times Specific Heat Capacity times Temperature equals thermal energy.

where the material's specific heat capacity relates the amount of heat required to raise a unit mass of the material's temperature by one degree Celsius.

Even if the two blocks are at the same temperature, they will have different quantities of thermal energy since they have different masses. Assuming they are both composed of the same material and have the same specific heat capacity, the block with a mass of 300g will contain more thermal energy than the block with a mass of 33g.

33g × specific heat capacity x 175°C Equals 33g thermal energy of a 33g block.

Heat capacity of a 300g block is equal to 300g times 175°C in terms of thermal energy.

The thermal energy of the two blocks will vary since the masses are different.

Answer:

I think the answer is D.)

Explanation:

If it means something needs to melt into liquid i would have gone with B.) or C.) but since it doesn't specifiy. I thought D.) since all you have to do is heat it and it melts or boils.

Explanation:

The difference between final and initial position of an object is called its displacement. Its formula is given by :

\(\text{displacement}=\text{final position}-\text{initial position}\)

It is equal to the shortest path covered by it. It is a vector quantity. It has both magnitude and direction.

Answer: 1.2 x 10^7kg

Explanation:

Volume of tank = length x width x height

Volume = 51 x 20 x 11

Volume = 11220 m^3

Density = Mass/Volume

Density = 1030 kg/m^3

Volume = 11220 m^3

Mass = m

1030 = m/11220

m = 1030 x 11220

m = 11,556,600 kg or 1.2 x 10^7kg

The two students have opposing views on determining, if any, which car accelerates. The best method to determine which car is accelerating are Construct a position vs speed graph, and note which cars are increasing in speed.

In physics, acceleration is the change in velocity in a given unit of time. Generally, acceleration is seen as the movement of an object getting faster or slower. But acceleration is a vector quantity, so acceleration has both magnitude and direction.

In other words, an object that is turning (eg a car that is turning a corner) also has acceleration too. The SI unit for acceleration is m/s. The dimension of acceleration is L T. Acceleration (denoted by a) follows the following formula: In classical mechanics, the acceleration of an object with a fixed mass is directly proportional to the resultant force acting on it and inversely proportional to its mass. Acceleration can be positive or negative

Learn more about acceleration at https://brainly.com/question/25876659

#SPJ4

Nature and nurture both play a role in how people develop. Nature refers to the genetic or inherited traits we are born with, and nurture refers to the environment and experiences that shape us as we grow up. Together, these two components make up the basis for human development.

When A slider is moving to the right across unpacked snow and skidding to a stop, forces act upon the slider are: Normal force, Friction force, Gravity force.

An object's push or pull is seen as exerting a force. The interaction of the objects produces push and pull. You can also use words like stretch and squeeze to describe force.

The definition of force in physics is: the push or pull on a mass-containing item changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.

When a slider is moving to the right across unpacked snow and skidding to a stop gravitational force due to his weight, normal reaction force and frictional resistance force will act upon the slider.

To find more about force, refer the link:

https://brainly.com/question/13191643

#SPJ5

The mass flow rate of the pump is 2.8 kg/s.

Given the density of the oil (kerosene) to be ρ= 0.75 kg/L

The volume of oil is equal to 10,000 L1 L = 0.001 m³Volume of oil = 10,000 × 0.001 = 10 m³Density of oil = mass/volume ⇒ mass = density × volume

Let m be the mass of oil.

m = ρV = 0.75 × 10 = 7.5 kg

The time taken to empty the tank is 45 minutes. 1 minute = 60 seconds

The time taken is t = 45 × 60 = 2,700 seconds.

Let the mass flow rate be m′. The mass flow rate is defined as the mass of fluid flowing per unit time.m′ = m/t = 7.5/2,700 kg/s= 0.00278 kg/s

Therefore, the mass flow rate of the pump is 2.8 kg/s.

To know more about mass flow rate, visit:

https://brainly.com/question/30763861

#SPJ11

The magnitude of the average velocity of the train is 0.426 m/s.

Average velocity can be defined as the ratio of the total dfistance covered by a body to the total time.

To calculate the average velocity of the of the train, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the magnitude of the average velocity of the train is 0.426 m/s.

Learn more about average velocity here: https://brainly.com/question/24739297

#SPJ1

The inductive current in a parallel RLC circuit exhibits a phase relationship where the voltage leads the current by 90 degrees.

In a parallel RLC circuit, the phase relationship between current and voltage depends on the individual components - resistance (R), inductance (L), and capacitance (C).
For the inductive current in a parallel RLC circuit, the voltage leads the current by 90 degrees. This means that the voltage reaches its peak before the current reaches its peak.
To understand this, consider a circuit with an inductor (L) in parallel with a resistor (R) and a capacitor (C). When an AC voltage source is connected to the circuit, the inductor resists changes in current and causes the current to lag behind the voltage. As a result, the voltage across the inductor leads the current.
This phase relationship between voltage and current in an inductive circuit can be visualized using phasor diagrams. The voltage phasor leads the current phasor by 90 degrees.
It's important to note that the phase relationship can vary depending on the values of resistance, inductance, and capacitance in the circuit. However, in a parallel RLC circuit with an inductor, the inductive current is characterized by the voltage leading the current by 90 degrees.
Overall, the inductive current in a parallel RLC circuit exhibits a phase relationship where the voltage leads the current by 90 degrees.

Learn more about: inductive current

https://brainly.com/question/33325584

#SPJ11

Answer:

Y-> + F-> +G ->=E->

Explanation: