which objective lens requires oil to be applied

The given statement, Non-volatile memory is a type of memory that retains its contents even when the power is turned off is true because non-volatile memory devices are designed to store data in a way that is not dependent on the presence of an external power source.

Non-volatile memory is a type of computer memory that can retain its contents even when the power is turned off. This is different from volatile memory, which loses its contents when the power is turned off.

Examples of non-volatile memory include read-only memory (ROM), flash memory, and magnetic storage devices like hard drives and solid-state drives. These types of memory are used to store data and programs that need to be preserved even when the computer is turned off or loses power.

Therefore, the statement that non-volatile memory is temporary and loses its contents when the power is turned off is true. Non-volatile memory is designed to retain its contents even when the power is turned off, making it an essential component of computer systems.

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The correct response is (b), as light travels through a lens' optical centre without deviating.

When a ray of light passes through the optical center of a lens, it passes through the lens undeviated. This is because the optical center is the point on the lens where the principal axis intersects and the lens has the same refractive index throughout its thickness. As a result, the light ray does not experience any deviation or refraction as it passes through the lens, and it emerges on the other side of the lens along the same path.

When light passes through a lens, it undergoes refraction, which means that it changes direction as it enters and exits the lens. The extent to which the light is refracted depends on the curvature of the lens and the angle at which the light hits it. The lens refracts the light by bending it towards or away from the principal axis, depending on whether the lens is converging or diverging.

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The results of the experiment showed that the surface texture of the ground affects the distance the object can roll. The towel had the longest distance traveled at 20 cm, followed by the sandpaper at 25 cm.

The distance between two points is the length of the straight line connecting them. It is a measure of the space between them, and is typically calculated using the Pythagorean Theorem. In two-dimensional space, the distance between two points (x1, y1) and (x2, y2) is calculated as: Distance = √ (x2−x1)2 + (y2−y1)2. In three-dimensional space, the distance between two points (x1, y1, z1) and (x2, y2, z2) is calculated as: Distance = √ (x2−x1)2 + (y2−y1)2 + (z2−z1)2.

1. Place the hard cover book on a flat surface.

2. Place the marble ball at the top of the book.

3. Place the towel, cotton, and sandpaper on the flat surface.

4. Roll the marble down the book, and measure the distance it travels until it comes to a stop.

5. Record the distance it traveled.

6. Repeat the process for each of the surfaces.

7. Calculate the average distance traveled for each surface.

Results:

Surface Distance Traveled (cm)

Towel 20 cm

Cotton 15 cm

Sandpaper 25 cm

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Using the equation qrxn = - (qsol + qcal), the value of qrxn is calculated as - (831 J + 32 J) = -863 J. This indicates that the reaction is exothermic and releases 863 J of energy.

It appears that you have provided the correct calculation for determining the heat of reaction (qrxn) given the heat absorbed by the calorimeter (qcal) and the heat absorbed by the solution (qsol). The heat capacity of the calorimeter is given as 8.20 J/oC and the temperature change is given as 3.9oC, which is used to calculate qcal as 32 J.

It is important to note that this calculation assumes that the heat capacity of the solution is negligible compared to the heat capacity of the calorimeter, and that the calorimeter is perfectly insulated.

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--The complete question is, The calorimeter has a heat capacity of 8.20 J/oC. If a correction is included to account for the heat absorbed by the calorimeter, what is the heat of reaction, qrxn?

qrxn = - (qsol + qcal) qcal = T x heat capacity

qcal = (3.9oC) x (8.20 J/oC)

qcal = 32 J

qrxn = - (831 J + 32 J)

qrxn = -863 J--

The strength of gravity between two objects depends on two factors:

a) The masses of the objects and

b) The distance between them.

The magnitude of the electrostatic force on sphere B due to sphere A is also 2.4 N, because the forces are equal in magnitude but opposite in direction as they form an action-reaction pair.

First by Coulomb's Law, the electrostatic force F between two point charges Q1 and Q2, separated by a distance r, is given by

F = k * (Q1 * Q2) / r^2

Where k is the Coulomb constant, which has a value of 9 × 10^9 N·m^2/C^2.

In this case, we have two spheres A and B, with charges +2 * 10^-6 C and +1 * 10^-6 C, respectively. The electrostatic force on A due to B is given as 2.4 N.

To find the electrostatic force on B due to A, we can use Coulomb's Law and the fact that the force between the two spheres is an action-reaction pair, meaning that the forces on A and B are equal in magnitude but opposite in direction. Therefore, the magnitude of the electrostatic force on B due to A is also 2.4 N.

We can see this by rearranging Coulomb's Law as:

F = k * (Q1 * Q2) / r^2

=> Q2 = (F * r^2) / (k * Q1)

where

Substituting the values given, we get:

Q2 = (2.4 N * (1 m)^2) / (9 × 10^9 N·m^2/C^2 * 2 × 10^-6 C) = 0.133 C

Therefore, the magnitude of the electrostatic force on sphere B due to sphere A is also 2.4 N, because the forces are equal in magnitude but opposite in direction as they form an action-reaction pair.

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The aircraft's Mach number will fluctuate. This is so because the Mach number is based on the sound speed.

In fluid dynamics, the Mach number is a dimensionless variable that measures the ratio of flow velocity to the local sound speed past a boundary.

In order to approximate treating a flow as an incompressible flow, the Mach number is usually used. The medium might be either a liquid or a gas.

The ratio of an object's speed to the sound speed in a certain medium is known as its Mach number. Therefore, Mach 1 is the speed of sound, which on an average day at sea level is approximately 761 mph.

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The required Carnot engine performs 1318.31 J of work per cycle.

The Carnot engine is an idealized heat engine that operates between two thermal reservoirs and is the most efficient engine possible for a given set of thermal reservoirs. The efficiency of a Carnot engine is given by the formula:

[tex]Efficiency = 1 - (T_{low} / T_{high})[/tex]

In this problem, the high-temperature reservoir is at 435 K and the low-temperature reservoir is at 280 K. Therefore, the efficiency of the Carnot engine is:

Efficiency = 1 - (280/435) = 0.3563 or 35.63%

The Carnot engine absorbs 3700 J of heat each cycle. Therefore, the work performed per cycle by the engine is:

Work = Efficiency * Heat absorbed
          = 0.3563 * 3700 J = 1318.31 J

Therefore, the Carnot engine performs 1318.31 J of work per cycle.

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"The name given to elements that are usually brittle and poor conductors of heat and electricity are non-metals."

Non-metals are elements that frequently gain electrons during chemical reactions to create anions. These substances are electronegative ones. They lack lustre, are fragile, and are bad heat- and electricity-conductors (except graphite).

There aren't enough free electrons in non-metals to allow for electrical current to travel. and are therefore poor electrical insulators. The only non-metals that are both brittle and non-ductile are phosphorous and sulphur.

F, Cl, Br, and I are atoms found in halogens. At room temperature, the halogens are either gases or extremely brittle substances. They have a drab look and are brittle gases or solids. Halogens don't transmit electricity well.

Thus, non-metals are brittle and poor conductors of heat and electricity.

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Answer:

Explanation:

F=ma

a=change in velocity/time

f=m*change in velocity/time

velocity= Force*time/mass

The correct statements from the list are:

Low-density hot gases produce emission spectra.

Emission spectra have dark lines.

The size of an electron's orbit depends on its energy.

Electrons will move to higher orbits when an atom absorbs enough energy.

Hot solids emit continuous spectra.

An absorption spectrum is a pattern of dark lines or gaps in a continuous spectrum that is produced when light passes through a cooler gas or a cloud of gas. This pattern is caused by the gas absorbing certain wavelengths of light from the continuous spectrum.

Each element or molecule has a unique absorption spectrum, as they absorb different wavelengths of light based on the energy levels of their electrons. The absorption spectrum can be used to identify the presence of certain elements or molecules in a sample, as well as to study the physical and chemical properties of the gas.

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Jolie is on the weightlifting team at her school, She uses a force of 5 N to lift 150 pounds of weight to a height of 1.5 m, so the work she will do is 5057.55 joules to lift the weight.

What effect does weightlifting have on the body?

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When a car travels around a curve in the road centripetal force helps to keep the car traveling in a curved path.

The primary factor is the force of friction between the tires and the road. This force is what allows the car to maintain traction and grip the road surface, preventing it from sliding off the curve. As the car turns, the force of friction acting on the tires generates a centripetal force, which pulls the car towards the center of the curve.

Other factors that contribute to keeping the car on the curved path include the design of the road and the car's suspension system. Roads are often banked on curves, which means they are angled to the inside of the curve. This banking helps to create a force that pushes the car towards the center of the curve, reducing the amount of lateral force required to maintain the turn. The car's suspension system also plays a role in keeping the car stable during the turn by absorbing shocks and vibrations and helping to maintain the car's balance.

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Yes, an impulse is defined as the change in momentum of an object. When an external force is applied to an object for a period of time, the object's momentum changes.

The impulse is equal to the change in momentum, and it is equal to the force multiplied by the time over which the force was applied. Mathematically, the impulse is given by the formula:

Impulse = Force x Time

And the momentum of an object is given by the formula:

Momentum = Mass x Velocity

So, if a force is applied to an object for a time period and the object's velocity changes as a result, then the impulse experienced by the object is equal to the change in momentum. This can be expressed as:

Impulse = Final Momentum - Initial Momentum

where the final momentum is the momentum of the object after the force is applied, and the initial momentum is the momentum of the object before the force is applied.

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There are 1000 milliampere in 1 Ampere.

Ampere is the unit of measurement of electric current. Electric current is the flow of electrons in any substance. This means that 1 Ampere is the unit of measure of the rate of the flow of electrons in any electric conductor.

On the meter scale of measurement, we have the prefixes which are used to denote how many orders of magnitude are equivalent to bigger and smaller quantities. Milli- is used for denoting quantities of smaller value. They are of the order of magnitude -3. So, as a result, there are 1000 milliampere in 1 Ampere.

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An ocular micrometer is a measuring tool used in microscopy to measure the size of objects under a microscope. Calibration is the process of ensuring that the ocular micrometer is accurate and giving the correct measurements.

What is ocular micrometer?

An ocular micrometer, also known as an eyepiece graticule, is a measuring tool used in microscopy to measure the size of objects viewed through a microscope. It consists of a small, transparent ruler that is placed in the eyepiece of a microscope.

The ruler is etched with fine lines that are used to measure the size of microscopic objects. These lines can be either simple or complex and are usually calibrated to a specific scale, such as millimeters or micrometers. When the microscope is focused on the object, the lines on the ocular micrometer are superimposed onto the image of the object.

An ocular micrometer is a measuring tool used in microscopy to measure the size of objects under a microscope. Calibration is the process of ensuring that the ocular micrometer is accurate and giving the correct measurements.

The frequency of calibration for an ocular micrometer depends on various factors, such as the type and quality of the micrometer, the frequency of use, and the environment in which it is used. However, as a general rule, it is recommended that an ocular micrometer should be calibrated at least once a year.

If the micrometer is used frequently or subjected to harsh environments, it may need to be calibrated more frequently. Additionally, if the micrometer is dropped or damaged, it should be recalibrated before use.

It is important to follow the manufacturer's recommendations and guidelines for the specific type of ocular micrometer being used to ensure accurate measurements.

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Answer:

Explanation:

Let [tex]F_{R}[/tex] be the frictional force.

[tex]F_{net} = F_{applied}-F_{R}[/tex]

2*8=24-[tex]F_{R}[/tex]

[tex]F_{R}=24-16=8N[/tex]

[tex]F_{g}=mg = 2*10 = 20N[/tex]

Coefficient of friction = [tex]\frac{F_{R}}{F_{g}}[/tex]

=8/20=2/5=0.4

The coefficient of friction = 0.4

According to the statement, If a force 1.21 x 103 N is needed to bring a car moving at 22.0 m/s to a halt in 20.0 s then the mass of the car is 1.10 x 10³ kg.

The push or draw motion is the simplest definition of force. Contact forces and non-energies are two different kinds of forces. Nuclear force, gravitational force, mechanical force, electrostatic force, electrical force, spring force, and others are a few instances of forces.

According to formula

force = mass x acceleration

When the car is brought to a halt, its final velocity is 0 m/s.

[(Final velocity) – (Initial velocity)] / Time = acceleration

acceleration = (0 - 22.0 m/s) / 20.0 s

acceleration = -1.10 m/s²

Note that we have used a negative sign because the acceleration is opposite to the direction of the initial velocity.

1.21 x 10³ N = mass x (-1.10 m/s²)

mass = 1.21 x 10³ N / (-1.10 m/s²)

mass = -1.10 x 10³ kg

The negative mass value doesn't make sense physically, so we need to use the absolute value:

mass = 1.10 x 10³ kg

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The electron transitions from the n=6 energy level to the n=2 energy level during the emission of the photon that produces the violet line at 434.0 nm in the spectrum of atomic hydrogen.

An atomic spectrum represents the distribution of electromagnetic radiation (light) emitted or absorbed by an atom in a gaseous state. It signifies the energy transitions of electrons within the atom as they move from higher energy levels to lower energy levels or vice versa.

The violet line observed at 434.0 nm in the spectrum of atomic hydrogen corresponds to a photon with a specific energy. We can use the energy-level diagram for hydrogen to determine the initial and final energy levels of the electron during the emission of this photon.

The photon's energy can be calculated using the equation:

E = hc/λ

where E is the energy of the photon, h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon.

Converting the wavelength of the photon to meters, we have:

λ = 434.0 nm = 434.0 × 10⁻⁹ m

Substituting the values of h, c, and λ into the equation, we get:

E = hc/λ = (6.626 × 10⁻³⁴ J s) × (3.00 × 10⁸ m/s) / (434.0 × 10⁻⁹ m) = 4.569 × 10⁻¹⁹ J

This energy corresponds to the difference in energy between the initial and final energy levels of the electron in the hydrogen atom. We can use the Rydberg formula to calculate the initial and final energy levels:

1/λ = R(1/n₁² - 1/n₂²)

where R is the Rydberg constant, n1 is the initial energy level, and n2 is the final energy level.

The Rydberg constant for hydrogen is:

R = 1.097 × 10⁷ m⁻¹

Substituting the values of λ and R into the equation, we get:

1/λ = R(1/n₁² - 1/n₂²)

1/434.0 × 10⁻⁹m = (1.097 × 10⁷ m⁻¹)(1/n₁² - 1/n₂²)

Solving for n1 and n2 gives:

n1 = 2

n2 = 6

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A Carbon atom (C) at the heart of the CO3(2-) Lewis structure is surrounded by three Oxygen atoms (O).

Between each Oxygen atom and the Carbon atom (C), there are two single bonds and one double bond (O). On an oxygen atom with a double bond, there are two lone pairs while on an atom with a single bond, there are three lone pairs (O). A polyatomic ion having the formula CO3 is called a carbonate ion (2-). NCI A carbon oxoanion is carbonate. It is a hydrogencarbonate's conjugate base. Negativity and the nature of bonds This indicates that the oxygen-carbon bond in the CO3(2-) ion is polar in nature, according to the Pauling scale.

The dipole moment along the three bonds in a molecule's trigonal planar form cancels each other out.

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The correct answer to part A is: "The magnitude of the normal force is equal to the magnitude of the weight of the suitcase." So, the correct option is B. This is because the normal force is the force exerted by the floor on the suitcase perpendicular to the surface of contact.

According to Newton's third law, for every action, there is an equal and opposite reaction. When the man pulls upward on the suitcase, the suitcase exerts an equal and opposite force downward on the man. This force is the weight of the suitcase, which is the force exerted on the suitcase by the Earth due to gravity. The normal force is the force exerted by the floor on the suitcase perpendicular to the surface of contact.

Since the suitcase is not lifted from the floor, it means that the forces are in equilibrium, and the net force on the suitcase is zero. Therefore, the magnitude of the normal force must be equal to the magnitude of the weight of the suitcase to balance the force of the pull. So option B is the correct answer. Options C, D, and E are incorrect because they do not take into account the fact that the forces must be in equilibrium.

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The difference between the approved reimbursement and what the physician is charging is called: adjustment.

Reimbursement Approval is defined as the approval, agreement, determination, or decision recommending and otherwise approving the Merchandise for use and/or establishing the Product's prices that can be reimbursed in regulatory cities and counties.

Most companies' laws require the bills and the justification for the outlay to be submitted. You can submit bills for reimbursement, and the business finance department will endorse them based on your qualifications.

Reimbursement is profit paid to an employee, customer, or some other party to cover a business expense, general liability, taxes, or other costs. Out-of-pocket expenses, such as travel and food, are included in business expense reimbursements.

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Approximately 2.2 g of iodine-135 would remain after 19.8 hours at the given half life.

To solve this problem, we can use the formula for radioactive decay:

N = N0 * (1/2)^(t/T)

Where;

We are given that the initial amount of iodine-135 is 11.2 g, the half-life is 6.6 hours, and the elapsed time is 19.8 hours.

Using the formula, we can find the amount of iodine-135 remaining after 19.8 hours:

N = 11.2 * (1/2)^(19.8/6.6)

N ≈ 2.2 g

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Answer:

Explanation:

a

The equivalent resistance when the resistors are connected in series is given by the expression, R eq = R₁ + R₂ + R₃ + ... + Rₙ.

When the same quantity of current flows through each resistor at the same time, two or more resistors are said to be connected in series. The voltage across each resistor in such circuitry varies. If any resistor in a series link breaks or has a fault, the circuit as a whole is shut off. A series circuit can be built more easily than a parallel circuit.

The sum of all individual resistances makes up the system's overall resistance.

R eq = R₁ + R₂ + R₃ + ... + Rₙ

Thus, the required expression of equivalent resistance for resistors connected in series is found out.

The question is inappropriate. It is solved generally according to my knowledge.

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There are 140 degrees Fahrenheit in 60 degree Celsius.

For conversion of temperatures of degrees Fahrenheit to degrees Celsius, we need to multiply the result by.5556 (or 5/9) after subtracting 32 to it. While converting any value from degrees Celsius to Fahrenheit, we need to multiply the result by 1.8 (or 9/5) and then by 32.

According to question:

The Fahrenheit, Celsius, Kelvin, all these are the scales which are used to measure temperature. Celsius (°C) is a metric scale and Fahrenheit (°F) is an imperial scale. To convert a temperature from Celsius to Fahrenheit, you can use the formula:

°F = (°C × 9/5) + 32. In this case, 60°C × 9/5 = 108 and 108 + 32 = 140°F.

It's important to know both scales because they are used in different parts of the world and in different fields, such as meteorology, medicine, and cooking. Understanding how to convert between these two temperature scales is a valuable skill for anyone dealing with temperature measurements.

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The maximum elevation reached by the rocket is 81.5 meters. We utilize equations of motion for acceleration that is constant.

We can break down the motion of the rocket into two parts: the initial acceleration phase and the subsequent coasting phase.

During the initial acceleration phase, the rocket experiences a constant net acceleration of [tex]20.0 m/s^2[/tex]. Therefore, the velocity of the rocket after 4 seconds can be calculated as seconds can be calculated as:

v = u + at

where u is the initial velocity (which is zero in this case), a is the acceleration, and t is the time elapsed.

v =[tex]0 + 20.0 m/s^2 * 4.00 s[/tex]

v = 80.0 m/s

Next, we can calculate the maximum height reached by the rocket during the coasting phase. Since there is no appreciable air resistance, we can assume that the rocket experiences a constant deceleration equal to the acceleration due to gravity ([tex]-9.81 m/s^2[/tex]). Therefore, the maximum height reached by the rocket can be calculated as:

[tex]s = ut + (1/2)at^2[/tex]

where s is the displacement, u is the initial velocity (which is 80.0 m/s in this case), a is the deceleration (-9.81 m/s^2), and t is the time elapsed since the motor turned off (which is 4 seconds).

s = [tex]80.0 m/s * 4.00 s + (1/2)(-9.81 m/s^2)(4.00 s)^2[/tex]

s = 160.0 m - 78.48 m

s = 81.5 m

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Buck-boost transformers are typically available in sizes up to 10kVA.

Buck-boost transformers can be used as isolating transformers and are usually used to lower or raise line voltage. They are available in a range of sizes, ranging from 50 volt amperes to 360 kVA. Additionally, buck-boost transformers are in compliance with NEC and are typically used to buck (lower) or boost (raise) the supply voltage a small amount, usually 5 to 27%. Buck Boost Transformers can protect connected equipment from damage by reducing or raising line voltage 5% to 20%. Primary and secondary lead wires can be interconnected for use as an autotransformer. For use in induction motors and air conditioning, lighting, and heating systems.

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The time of flight is approximately 101.04 seconds, or just over 1 minute and 41 seconds.

Displacement and distance are both concepts used to describe the motion of an object, but they have different meanings.

Distance refers to the total length of the path traveled by an object from its starting point to its ending point. It is a scalar quantity, which signifies it only has magnitude and no direction. For example, if a person walks 2 km east and then 3 km north, the total distance traveled is 5 km.

Displacement, on the other hand, refers to the straight-line distance between an object's starting point and its ending point, measured in a specific direction. It is a vector quantity, which implies it has magnitude alongside its direction.

We may utilize the kinematic equations of motion to solve this problem. The key equation we need is the one that relates the vertical displacement of an object to its initial vertical velocity, acceleration due to gravity, and time:

Δy = v₀y × t + (1/2)gt²

where Δy is the vertical displacement, v₀y is the initial vertical velocity, g is the acceleration due to gravity (9.8 m/s²), and t is the time of flight.

In this case, we know that the vertical displacement is 5.00 km (5000 m), the initial vertical velocity is 0 m/s (since the person is running horizontally off the cliff), and the acceleration due to gravity is -9.8 m/s² (negative because it acts in the opposite direction to the person's motion). We can quantify t as follows:

5000 = 0t + (1/2) × (-9.8) × t²

t² = (2 × 5000)/9.8

t = √((2 × 5000)/9.8) ≈ 101.04 seconds

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