A ray of light strikes a plane mirror at an angle of incidence 35°. If the mirror is rotated through 10°.
i. what is the angle of reflection before rotating the mirror?
ii. through what angle is the reflected ray rotated?
iii. what is the angle between the incidence ray and the new reflected ray?

The basic building block of all silicate minerals is the silicon-oxygen tetrahedron.

The answer is: The silicon-oxygen tetrahedron is the basic building block of all silicate minerals.

Explanation: The basic building block of all silicate minerals is the silicon-oxygen tetrahedron. It consists of four oxygen atoms arranged around a silicon atom in a tetrahedral shape, which is a pyramid with a triangular base.

Each oxygen atom shares two electrons with the silicon atom, forming covalent bonds. The structure of the tetrahedron is so strong that it forms the backbone of all silicate minerals.

Silicate minerals are the most abundant minerals on Earth's crust. They are essential components of rocks and soils and play a vital role in the carbon cycle, the formation of mountains, and the formation of the Earth's crust.

Conclusion: Therefore, it can be concluded that the silicon-oxygen tetrahedron is the basic building block of all silicate minerals.

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Answer:

1100 kg

Explanation:

500 lb x 2.20lb (1kg) =1100kg

Answer: Yes it is true according o newton third law of motion

What is Newton Third Law of motion ?

--According to Newton's third law of motion, every action has an equal and opposite reaction.

--These two forces act on two different bodies.

-- Example,

1-  while swimming, you push the water backward. The water, in turn, pushes you forward.

--Similarly, while walking, you push the ground backward.

-- The ground then exerts a reaction force on you in the forward direction.

What is Newton Second Law of motion ?

--Newton's second law of motion states that “Force is equal to the rate of change of momentum.

--For a constant mass, force equals mass times acceleration.

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Being physically, emotionally, and mentally healthy can keep you healthy and help you avoid significant health issues during exercises.

Exercise boosts mental health by lowering anxiety, depression, and depressive symptoms, as well as by raising self-esteem and increasing cognitive abilities. Additionally, it has been discovered that exercise helps with symptoms including poor self-esteem and social withdrawal.

Exercise on a regular basis can significantly improve symptoms of sadness, anxiety, and ADHD. Additionally, it lowers stress, enhances memory, promotes sound sleep, and uplifts your mood in general. It should be noted that it's important to be in the right state of mind during exercise to prevent injuries.

Therefore, being physically, emotionally, and mentally healthy can keep you healthy and help you avoid significant health issues during exercises.

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2 is the maximum number of electrons that could have the following set of quantum numbers.

Explain about atom?

Atom is the smallest unit of matter that can take part in a chemical reaction. It is made up of a nucleus containing protons and neutrons, surrounded by electrons in energy levels or shells. Electrons determine the chemical properties of an element, while the number of protons in the nucleus determines an element's atomic number and identity. The number of neutrons in the nucleus of an atom can vary, causing atoms of the same element to have different masses. These variations are known as isotopes.

In an atom, the maximum number of electrons with a given set of quantum numbers is determined by the electron configuration of the atom. For an electron with the quantum numbers n = 2, l = 1, and ml = +1, the maximum number of electrons is 2. Therefore, for a given set of quantum numbers n, l, and ml, there can be a maximum of 2 electrons in an atom, one with spin-up (ml = +1/2) and one with spin-down (ml = -1/2).

Therefore, the correct answer is (c) 2.

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Answer:4 and 5

Explanation:it you add 1+3 and 2+3 it is 4 and 5

We can see here that correctly completing this prompt, we have:

Current is produced in a conductor when it is moved through a magnetic field. This process of  applying a force on the free electrons  in the conductor and causing them to move.

This process of generating current in a conductor by placing the conductor in a changing magnetic field is called induction. There is no physical connection between the conductor and the magnet. The conductor, which is often a piece of wire, must be perpendicular to the magnetic lines of force in order to produce the maximum force on the free electrons.

In physics, current refers to the flow of electric charge in a circuit. It is measured in amperes (A) and is defined as the amount of charge that passes through a point in a circuit per unit time. In other words, current is the rate of flow of electric charge.

Current can flow through a variety of materials, such as wires or conductive solutions, and is driven by a potential difference, or voltage, between two points in a circuit.

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A skydiver who has stepped from a helicopter and is falling through air, before she reaches terminal speed and long before she opens her parachute her speed increases, until she reaches terminal speed.

The highest speed that an item may reach as it descends is referred to as terminal velocity. Because the effects of air resistance on various objects vary depending on their shapes, the terminal velocity speed will be different for each item.

An object will attain its maximum speed when it falls from a low height (like a table) but this is not the terminal velocity since if the object had been allowed to fall for longer, it would have continued to gain speed. If an object was dropped from a height twice as great, the terminal velocity would remain the same.

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If negligible velocity at inlet (C 1 ≈0), the velocity (C2) of steam (in m/s) at the nozzle exit is 447.21 m/s.

According to question:

The steady flow energy equation for steady flow devices

m (h1 + ((c1)2/2) + z1g) + Q = m (h2 + ((c2)2/2) + z2g) + Wcv

C1 = 0

Wcv = 0

z1 = z2

mh1 + Q = mh2 + m((C2)2/2)

m((C2)2/2) = m(h1-h2) + Q

0.1 × ((C2)2/2) × 10-3 = 0.1(2500-2350) -5

C2 = 447.21 m/s

Thus, the negligible velocity at inlet (C 1 ≈0), the velocity (C2) of steam (in m/s) at the nozzle exit is 447.21 m/s.

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Answer:

The average acceleration is \(8\ m/s^2\)

Explanation:

Uniform Acceleration

When an object varies its velocity at the same rate, the acceleration is constant.

The relation between the initial and final speeds is:

\(v_f=v_o+a.t\)

Where:

vf  = Final speed

vo = Initial speed

a   = Constant acceleration

t   = Elapsed time

The acceleration can be calculated by solving for a:

\(\displaystyle a=\frac{v_f-v_o}{t}\)

The Indy 500 race car increases its speed from vo=4 m/s to vf=36 m/s in t=4 s. Thus, the average acceleration is:

\(\displaystyle a=\frac{36-4}{4}=8\ m/s^2\)

The average acceleration is \(8\ m/s^2\)

To sterilise a 50.0-g glass infant bottle, we must increase its heat from 22.0 to 95.0 degrees Celsius, or 3066 J of heat is transferred.

Heat is the result of the movement of kinetic energy within a material or an item, or from form of energy to a material or an object. Electromagnetic energy can be transported using three different mechanisms: radiation, conduction, and convection. Conduction of heat through solids, convection of liquids and gases, and electromagnetic radiation (radiation).

When a substance is subjected to a material-specific phase-change temperature, the material immediately undergoes a phase shift from a solid to a liquid. sources include solar energy, heat pumps, deep geothermal heat pumps, nat gas, lpg (LP), oil, coal, and wood.

50.0 g (0.84 J/g C) of heat was transported (95 C - 22 C)

= 3066 J of heat transferred

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A bullet fired horizontally from a rifle will begin to fall because of the gravitational force acting on it. The initial horizontal velocity will cause the bullet to travel a certain distance before it starts to fall.

The distance traveled before the bullet hits the ground will depend on the initial velocity and the height from which the bullet was fired. We can expand on this topic. Gravity is the force that pulls objects towards the center of the earth. When a bullet is fired from a rifle, it will have an initial horizontal velocity, but it will also have a downward acceleration due to gravity. As the bullet travels forward, the downward acceleration due to gravity will cause it to lose altitude until it hits the ground.Bullets fired from rifles are designed to be as aerodynamic as possible, so that they will travel as far as possible before they hit the ground. The distance that a bullet will travel before it hits the ground will depend on a number of factors, including the initial velocity, the angle of the shot, and the air resistance that the bullet encounters.

A bullet fired horizontally from a rifle begins to fall because of the gravitational force acting on it. The distance traveled before the bullet hits the ground will depend on the initial velocity and the height from which the bullet was fired. Bullets fired from rifles are designed to be as aerodynamic as possible, so that they will travel as far as possible before they hit the ground.

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The work done by the frictional force will be 100,000 Joules.

In order to calculate the amount of work done by the frictional force, we must first determine the amount of force that is being exerted. In this case, a 1000-kg car is travelling at a speed of 25 m/s, and is experiencing an 8000 N force of friction.

To calculate the total amount of work done by the frictional force, we must use the equation: Work = Force x Distance, where Force is the amount of force in Newtons, and Distance is the amount of distance the car travels.

In this case, the Force is 8000 N, and the Distance is the amount of distance the car travels while it skids to a stop. Therefore, the total amount of work done by the frictional force is 8000 N x (25 m/s/2) = 100,000 Joules.

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Answer:X-ray diffraction (XRD) is the technique most heavily relied on in soil mineralogical analysis. X-ray diffraction is a technique that provides detailed information about the atomic structure of crystalline substances. It is a powerful tool in the identification of minerals in rocks and soils.

Explanation:

XRD is used to identify the minerals composing clay-rich, hydrothermally altered rocks that occur on several Cascade volcanoes. Such rocks are believed to play an important role in the generation of large landslides and mudflows. XRD is used to analyze saline minerals, including borates.

They feel they are, overall, bad people without any particular skills or value, when they are not.

I hope this helps you

God bless and have an awesome weekend

:)

Answer:

Esses movimentos são movimentos naturais.

Explicação:

Se uma pedra cair do topo de um telhado ou edifício, a pedra se moverá em direção à terra, enquanto a fumaça produzida devido à queima da madeira vai para cima, então de acordo com Aristosteles esses tipos de movimento são chamados de movimento natural porque de acordo à definição de movimento natural que não requer nenhuma força, então esses dois movimentos também se movem na direção para baixo e para cima sem usar qualquer força, então podemos dizer que esses movimentos são naturais.

Answer:

Explanation:

Silver, Bronze, Gold

Answer:

Objetos que se encuentran en movimiento:

1) Un automóvil pasando por la calle.

2) Una crustácea que se acerca a mi casa.

3) Un avión volando en el cielo.

4) Un repartidor de comida desplazándose en una bicicleta.

5) Las aspas del ventilador en rotación.

6) Una hojarasca afuera de la casa.

7) La puerta de mi habitación abrirse.

8) Un mosquito entrando por la ventana.

9) Un metrónomo en movimiento.

10) Las hojas de mi cuaderno siendo agitadas por la brisa impulsada por el ventilador.

Objetos que se encuentran en reposo:

1) El semáforo de la esquina.

2) El automóvil de mi madre.

3) Las sillas del comedor.

4) Un jarrón de porcelana.

5) La nevera de la cocina.

6) La mesa de noche de mi habitación.

7) El automóvil de policía en la calle.

8) La impresora de memes.

9) El estante de libros.

10) El cesto de galletas.

Un objeto está en reposo si y solo si la posición de todos sus puntos no ha cambiado con respecto a la posición inicial en el tiempo. Los cambios de posición se manifiestan mediante tres formas:

(i) Traslación.

(ii) Rotación.

(iii) Deformación.

Explanation:

Objetos que se encuentran en movimiento:

1) Un automóvil pasando por la calle.

2) Una crustácea que se acerca a mi casa.

3) Un avión volando en el cielo.

4) Un repartidor de comida desplazándose en una bicicleta.

5) Las aspas del ventilador en rotación.

6) Una hojarasca afuera de la casa.

7) La puerta de mi habitación abrirse.

8) Un mosquito entrando por la ventana.

9) Un metrónomo en movimiento.

10) Las hojas de mi cuaderno siendo agitadas por la brisa impulsada por el ventilador.

Objetos que se encuentran en reposo:

1) El semáforo de la esquina.

2) El automóvil de mi madre.

3) Las sillas del comedor.

4) Un jarrón de porcelana.

5) La nevera de la cocina.

6) La mesa de noche de mi habitación.

7) El automóvil de policía en la calle.

8) La impresora de memes.

9) El estante de libros.

10) El cesto de galletas.

Un objeto está en reposo si y solo si la posición de todos sus puntos no ha cambiado con respecto a la posición inicial en el tiempo. Los cambios de posición se manifiestan mediante tres formas:

(i) Traslación.

(ii) Rotación.

(iii) Deformación.

Using an electric kettle, 200 g of water at 100 is converted into steam at 100 in 300 seconds, so the specific latent heat of steam is 2250 j/g, and here the average of the electrical power used by the kettle is 1500 W.

The amount of heat required to convert 200 g of water at 100 °C to steam at 100 °C is explain below,

Q = m × L (m = mass of water; L = specific latent heat of steam)

Q = 200g × 2250 J/g = 450000 J

The time to convert the water into steam = 300 seconds, thus the average power used is:

P = Q/t = 450000 J/300 s = 1500 W

Hence, here the average of the electrical power used by the kettle with  200g of water is 1500 W.

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Answer:

-8Y =6-18

-8Y=-12

Y=-12+8

y=-4

Answer:

a) Ffloor = 616.56[N]

b) Ffloor = 484.16 [N]

Explanation:

In order to solve this problem, we must first make a free body diagram. In this free body diagram include forces, as well as acceleration.

Then after the free body diagram, we perform a force analysis by means of Newton's second law, where the upward forces and even the upward acceleration will be taken as positive.

ΣF = m*a

where:

F = force [N] (units of Newtons]

m = mass [kg]

a = acceleration [m/s²]

g = gravity acceleration = 9,81 [m/s²]

a)

\(F_{floor} -m*g = m*a\)

\(F_{floor} -(56*9.81)=56*1.2\\F_{floor}= 616.56[N]\)

b) Using Newton's second law we have.

\(F_{floor}-m*g= -m*a\\F_{floor}=-m*a+m*g\\F_{floor} = -(56*1.2) + (56*9.81)\\F_{floor} = 484.16 [N]\)

Answer:

Blood is both a tissue and a fluid. It is a tissue because it is a collection of similar specialized cells that serve particular functions. These cells are suspended in a liquid matrix (plasma), which makes the blood a fluid

According to given information to find the weight of the car, we can use the concept of pressure and area. The car weighs approximately 4.8 x 10³ N.

1. The absolute pressure in each tire is given as 2.0 x 10⁵ Pa.
2. The area of each tire in contact with the ground is given as 0.024 m².

To calculate the weight of the car, we can use the formula:

Pressure = Force / Area

Rearranging the formula, we have:

Force = Pressure x Area

Now, let's plug in the values:

Force = (2.0 x 10⁵ Pa) x (0.024 m²)

Multiply the values:

Force = 4.8 x 10³  N

Therefore, the weight of the car is approximately 4.8 x 10³  N.

Conclusion ,The car weighs approximately 4.8 x 10³  N.

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To determine the effort needed to raise the 300 lbs rock using a 10ft branch as a lever, we can apply the principle of the lever and the concept of torque.

The formula for calculating torque is:

Torque = Force × Distance

In this case, the fulcrum is acting as the pivot point, and the effort is applied at the end of the branch. The weight of the rock is the resistance, acting 3 ft from the fulcrum. Let's denote the effort as "E" and the unknown torque as "T."

Since the system is in equilibrium, the torque exerted by the effort must equal the torque exerted by the weight of the rock:

Torque of Effort = Torque of Weight

E × 10ft = 300 lbs × 3 ft

E × 10 = 900

E = 90 lbs

Therefore, an effort of 90 lbs would be needed to raise the 300 lbs rock using the 10ft branch as a lever, with the rock positioned 3 ft from the fulcrum.

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As the dielectric constant K exceeds 1, the capacitance rises. Possible variation V = CQ. The p.d. between the plates lowers as C rises while Q stays the same when the battery is disconnected.

Electric field E=dV, where d is the distance between the plates and V is the p.d. The electric field also diminishes when V lowers while d stays constant. U=21CQ2 is the energy stored in a capacitor. U declines while Q stays constant and C rises.

As the plates are separated, the distance d between them increases, which causes the capacitance to decrease. As a result, the capacitor's voltage rises as Q=CV in order to keep the charge constant.

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The Planck function, also known as the Planck radiation law, calculates the spectral radiance of electromagnetic radiation emitted by a black body at a given temperature.

A black body is an idealized object that absorbs all radiation incident upon it and emits radiation based solely on its temperature. The Planck function describes the spectral distribution of the radiation emitted by a black body, meaning it gives the amount of energy emitted by the black body per unit time, per unit area of the emitting surface, per unit solid angle, and per unit frequency (or wavelength) of the radiation.

The Planck function is a crucial tool for comprehending how electromagnetic radiation behaves in a variety of contexts, including cosmology, astrophysics, and thermal radiation. It has been used to explain phenomena like the spectrum of stars and galaxies and the cosmic microwave background radiation.

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The minimum amount of heat needed to melt it to a liquid will be 569.067 kJ.

The minimum amount of heat needed to melt it to a liquid is known as the enthalpy of fusion.

The formula for the enthalpy of the fusion is;

\(\rm L_f=Q/m \\\\ L_f=mCdt/m \\\\ L_f= Cdt \\\\ L_f= 899 J/kg^0C \times (660^0-27^0) \\\\ L_f= 569,067 \ J \\\\\ L_f=569.067 \ kJ\)

Hence, the minimum amount of heat needed to melt it to a liquid will be 569.067 kJ.

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The free body diagram shows the forces that act on the object.

We know that force is a vector quantity as such the direction of the force can also be seen to be very important and this is what have given rise to the idea of the free body diagram because it would show all the forces that have acted on the objects.

In effect, what we have been asked to do here is to draw the free body diagram of the system that is under study here. In this diagram all of the forces that is acting on each of the objects must be balanced.

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The time required to cover the Moon to a depth of 1.20 meters with micrometeorites.

To find out how long it would take to cover the Moon to a depth of 1.20 meters with micrometeorites, we can calculate the volume of the Moon and then divide it by the volume of one micrometeorite. Let's break down the calculation step by step:

Calculate the volume of the Moon:

The average radius of the Moon is approximately 1.737 ×10⁶ meters. Using the formula for the volume of a sphere, V = (4÷3)πr³, we can calculate the volume of the Moon.

\(V_{moon}\) = (4÷3)π(1.737 × 10⁶)³

Calculate the volume of one micrometeorite:

The diameter of the micrometeorite is given as 1.30 ×10⁽⁻⁶⁾ meters, which means the radius is half of that.

\(r_{meteorite}\) = (1.30 × 10⁽⁻⁶⁾)÷2

Using the formula for the volume of a sphere, V = (4÷3)πr₃, we can calculate the volume of one micrometeorite.

\(V_{meteorite}\) = (4÷3)π((1.30 × 10⁽⁻⁶⁾)÷2)³

Calculate the number of micrometeorites needed to fill the Moon:

To find the number of micrometeorites required to fill the Moon, we divide the volume of the Moon by the volume of one micrometeorite.

\(N_{meteorites}\) = \(V_{moon}\) ÷ \(V_{meteorite}\)

Calculate the time to fill the Moon:

Since one micrometeorite strikes each square meter of the Moon each second, we can equate the number of micrometeorites needed to fill the Moon to the number of seconds it would take.

Time = \(N_{meteorites}\) ÷ (1 m²/s)

Convert seconds to years:

Finally, we convert the time in seconds to years by dividing by the number of seconds in a year (assuming 365.25 days in a year and 24 hours in a day).

\(Time_{years}\) = Time ÷ (365.25 days/year × 24 hours/day × 3600 seconds/hour)

Performing these calculations will give us the time required to cover the Moon to a depth of 1.20 meters with micrometeorites.

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