Determine the longest wavelength of light capable to remove an electron from a sample of potassium metal, if the binding energy for an electron in k is 1. 76 × 103 kj/mol.

Principal axis or optical axis is a virtual line that passes through

the center of the lens.

A lens is a transmissive optical tool that employs refraction to focus or disperse a light beam. A compound lens is made up of numerous simple lenses that are often aligned along a common axis, as opposed to a simple lens, which is made up of a single transparent piece.

Principal axis the line between the optical center and the centers of curvature of a lens's or a curved mirror's faces. Any one of three axis that are mutually perpendicular and around which a body has its greatest moment of inertia.

Principal axis or optical axis is a virtual line that passes through

the center of the lens.

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Answer:

825 Joules of energy would be correct if my math is right.

By Using Euler's method with two steps, we can find the approximate value of Y(2) is 2.125. , where Y is the solution of the initial value problem dy/dx = x - y, and Y(1) = 3.

Euler's method is defined as a numerical technique which is  used to approximate solutions into ordinary differential equations. The method includes dividing the interval of interest into smaller steps and thereafter approximating the solution at each step by using the derivative of the function.

In this case, we are given the initial value problem dy/dx = x - y, with the initial condition Y(1) = 3. To approximate Y(2) using Euler's method with two steps, we will divide the interval [1, 2] into two equal steps.

Step 1:

We start with the initial condition Y(1) = 3. Using the differential equation dy/dx = x - y, we can approximate the value of Y at the midpoint of the interval [1, 2].

Using the step size h = (2 - 1) / 2 = 0.5, we can calculate Y(1.5) as follows:

Y(1.5) ≈ Y(1) + h × (x - y) = 3 + 0.5 × (1.5 - 3) = 3 + 0.5 × (-1.5) = 2.25

Step 2:

Now, using the value of Y(1.5) as the new approximation, we calculate Y(2) using the same process:

Y(2) ≈ Y(1.5) + h × (x - y) = 2.25 + 0.5 × (2 - 2.25) = 2.25 + 0.5 × (-0.25) = 2.125

Thus,  by using Euler's method with two steps, the approximate value of Y(2) is 2.125.

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The complete question is

Use Euler's Method With Two Steps To Approximate Y(2), Where Y Is The Solution Of The Initial Value Problem: Dy : X − Y, Y(1) = 3

Answer:

I can msg it toyou

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Explanation:

Cost to run a 1200 W kettle that is in operation for 3.0 minutes is $ 0.00988

The Energy is P = E/t, in which P means electricity, E means strength, and t manner time in seconds. This formula states that power is the consumption of energy consistent with a unit of time.

Calculation:-

power = 1200 W = 1.2 kW

time = 3 minutes = 3/60

          = 0.05 hr

energy = power × time

            =  1.2× 0.05

            = 0.06 kWh

cost = $0.1646 × 0.06

    =  $ 0.00988

Energy is defined because of the “ability to do paintings, that's the ability to exert a force inflicting displacement of an object.” no matter this confusing definition, its which means is very simple: strength is just the force that causes matters to move. electricity is split into two sorts: potential and kinetic.

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a. heat is flowing from your hand to the door handle.

Temperature is not flowing, is heat which flows and make you feel that sensation

Answer: 2490 J

Explanation:

The formula to calculate kinetic energy is 1/2mv² where,

m = mass = 62.4

v = velocity = 8.94

Kinetic energy = 1/2mv²

= 1/2 × 62.4 × 8.94²

= 1/2 × 62.4 × 79.9236

= 2493.6J

The closest answer is option D.

Answer:

2.5 km/30min

Explanation:

Divide 5 by 2 because 30  min is half of 1 hour. when you do that you get 2.5

Answer:

8.803 s

(but this is only if it's a free fall, which we assume since we didn't get the mass of the hulk)

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Which of the following is not an example of an abiotic component of an ecosystem :

A . water

B . minerals

C . sunlight

D . bacteria ✓

E . air

Bacteria is a single celled living organism.

\( \#TeeNForeveR\)

D. bacteria is not an example of an abiotic component of an ecosystem.

An ecosystem is a community of living organisms (biotic) interacting with each other and with their non-living (abiotic) environment in a specific area. It encompasses all the living and non-living components of a particular environment and the complex interactions among them.

Here,
Abiotic components are the non-living factors that influence the distribution and abundance of living organisms in an ecosystem. Examples of abiotic components include water, minerals, sunlight, air, and temperature. Bacteria, on the other hand, are living organisms and are considered as biotic components of an ecosystem.

Thus, D. bacteria is not an example of an abiotic component of an ecosystem.

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Weight/mass = gravitational field strength is the formula. The gravitational fields of other planets differ in strength.

When an object goes on a circular path at a constant speed, its magnitude of velocity remains constant. Only its orientation is always changing. As a result, it is classified as evenly accelerated motion.

Uniform linear motion is defined as traveling along a straight line at the same velocity. The magnitude or direction of the velocity varies in uniform circular motion, whereas magnitude and direction remain constant in uniform linear motion.

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A star is moving directly toward earth at a large fraction of the speed of light. The light we observe from this star compared to the light received from the same star if it were at rest relative to earth will be blueshifted.

The amount of light emitted by a star coming towards earth would have a shorter wavelength as compared to other sources of light. This refers to the doppler shift principle. According to the doppler shift principle, if an observer is moving in relation to a source, then the change in frequency in the light waves would be relative to that observer.

In this case, we will observe that the star approaching earth will shift its spectral lines toward the blue end of the light series.

Since blue light has a shorter wavelength, therefore, the large fraction of the speed of light coming out from a star would correspond to the blue end of the light spectrum hence called blueshift.

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If you were only able to downscale the three physical dimensions (w, l, tox) and had to keep vdd and vt fixed in each subsequent generation, the power density scaling trend would depend on how the downscaling factor x compares to the fixed vdd and vt.

If x is greater than vdd and vt, then the power density would decrease with scaling, as the smaller dimensions would result in less power consumption and therefore less power density.

However, if x is smaller than vdd and vt, then the power density would increase with scaling, as the smaller dimensions would result in higher power consumption and therefore higher power density.

In general, the power density scaling trend in this scenario would depend on the specific values of x, vdd, and vt, and would need to be analyzed on a case-by-case basis.

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Answer:

When a body is moving on a circle it is accelerating because centripetal acceleration is always acting on it towards the center.

Please see the attached picture...

From the above diagram,we can say the acceleration is always acting on the body when it moves in a circle.

Hope this helps.......

Good luck on your assignment.......

Answer:

an object moving in uniform circular motion is moving in a circle with a uniform or constant speed. The velocity vector is constant in magnitude but changing in direction. Because the speed is constant for such a motion, many students have the misconception that there is no acceleration. "After all," they might say, "if I were driving a car in a circle at a constant speed of 20 mi/hr, then the speed is neither decreasing nor increasing; therefore there must not be an acceleration." At the center of this common student misconception is the wrong belief that acceleration has to do with speed and not with velocity. But the fact is that an accelerating object is an object that is changing its velocity. And since velocity is a vector that has both magnitude and direction, a change in either the magnitude or the direction constitutes a change in the velocity. For this reason, it can be safely concluded that an object moving in a circle at constant speed is indeed accelerating. It is accelerating because the direction of the velocity vector is changing.

Explanation: hopes it help u

The intensity of sound is inversely proportional to the square of the distance from the source. The intensity of sound at 4 m away from the source is approximately \(0.993W/m^{2}\) (watts per square meter).

The intensity of sound is defined as the power per unit area. According to the inverse square law for sound propagation, the intensity of sound is inversely proportional to the square of the distance from the source. Mathematically, it can be expressed as

\(I=P/(4\pi r^{2})\)

where I is the intensity, P is the power, and r is the distance from the source.

Given that the power of sound at the source outlet is 100 W and the distance from the source is 4 m, we can substitute these values into the formula. Thus, we have

\(I = 100 W / (4\pi (4 m)^2)\)

Simplifying this expression, we find that the intensity of sound at 4 m away from the source is approximately \(0.993W/m^{2}\) (watts per square meter).

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To convert centimeters to micrometers, we need to multiply the value by 10,000. Therefore, to convert 2840 centimeters to micrometers:

2840 cm * 10,000 = 28,400,000 μm

Writing this in scientific notation with three significant figures:

28,400,000 μm = 2.84e7 μm.

Micrometers, often abbreviated as μm, are a unit of length measurement in the metric system. One micrometer is equal to one millionth of a meter, which is approximately 0.000001 meters or 0.001 millimeters.

Micrometers are commonly used to measure extremely small distances or the size of microscopic objects. They are particularly useful in scientific research, engineering, manufacturing, and other fields where precise measurements at the microscale are required.

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(144)^2/(2x32) is the height (in feet) of the cliff? (use 32 ft/s2 for the acceleration due to gravity.)

h = height (ft)

h = (1/2)gt2 = 16t2

v = final speed = gt = 88 ft/s ⇒ t = 88/g = 88/32 s = 2.75 s

h = 16t2 = 16(2.75)2 ft = 121 ft.

An example of gravity is the force that keeps gas under the sun. The force that causes a ball thrown into the air to fall again. The power to roll downhill without stepping on the accelerator. The force with which a dropped glass hits the ground.

In general relativity, gravity is not a force between masses. Instead, gravity is the effect of space and time distortion in the presence of mass. If no force acts on an object, it will move in a straight line.

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Given:

The mass on the table is,

The hanging mass is,

THe coefficient of friction is,

let the acceleration of the whole system is a (for the hanging mass it is downward and for the mass on the table it is rightward). the tension towards The fixed point of the pulley is T.

we can write,

Adding these equations we get,

Substituting the values we get,

Hence the acceleration is 6.66 m/s^2.

Answer:

8000 J

Explanation:

There is a Quizlet made by a teacher with this answer.

Answer:

Nebulae contribute more to stellar formation than other regions because:

Explanation:

A.They have an unlimited supply of hydrogen.

B. They are believed to be rich in hydrogen and helium.

C. They have a three strong gravitational pull.

This are the reasons that Nebulae contribute more to stellar formation than other regions.

Answer:

b

Explanation:

We are given the following information about an inelastic collision.

Mass of 1st object = 4 kg

Mass of 2nd object = 10 kg

Initial velocity of 1st object = 25 m/s

Final velocity of both objects = 14 m/s

Initial velocity of 2nd object = ?

In an inelastic collision, the momentum is conserved but the kinetic energy is not conserved.

Recall that the total momentum is conserved and given by

Let us substitute the given values and solve for initial velocity of the body (u2)

Therefore, the initial velocity of the body of mass 10 kg is 9.6 m/s

Answer:

8

Explanation:

thc jhjhhdb hhvb. ggjv. j h. vhvhhhdh.

The velocity–time graph of the Lunar Landing Powered Descent that has a domain of 10 ≤ t ≤ 25, and a range of -2 ≤ v ≤ -40, between the 24th and the 25th seconds gives;

C) The Lander's velocity decreases away from the reference

A velocity time graph is a graph that shows the variation of the velocity of an object with time.

The information with regards to the lunar landing powered descent graph are;

Coordinate points on the graph;

(10, -2); At time t = 10 seconds, the average velocity, v = 0

(10.5, -40); The velocity relative to the starting point changed and decreased from 0 m/s to -40 m/s

(15, -5); The velocity increased from -40 m/s to -5 m/s

(22, -3); The velocity increases from -5 m/s to -3 m/s

(24, -2); The velocity increases from -3 m/s to -2 m/s

(25, -15); The velocity decreases from -2 m/s to -15 m/s

Therefore, taking the reference point as the point where the velocity is zero, 0, we have that between approximately 24 seconds and 25 seconds, the Lander's velocity decreases away from the reference.

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Answer:

speakers is going to be your answer

Answer:

doorbells

Explanation:

Answer: Because of the friction force acting directly on the bag.

Explanation:

The function of the wheels is diminish the effect of the friction force, when the friction pulls back, it makes the wheel rotate, and this force is not applied directly on the bag.

Now the wheels are not working, so now the friction is acting directly on the bag, this is why the mand finds more difficult to drag the bag.

From the calculation,  the man has an average velocity of 1.25 m/s.

The man travelled a total distance = 100 m

We know that;

1 complete cycle = 4 s

Then

 20 complete cycle = ?

= 20 x 4 s

= 80 s

So we can find the average velocity from;

Average velocity = 100 m/80 s

Average velocity = 1.25 m/s

Hence, the man has an average velocity of 1.25 m/s.

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Answer:

Explanation:

Hope this helps!

Answer:

a. constructive interference

Explanation:

100% correct