the nuclear force: (a) has infinite range. (b) is generally stronger than the electromagnetic force. (c) becomes infinite as the distance between particles approaches zero. (d) acts on electrons that may be inside the nucleus.

The Rayleigh length and Rayleigh range \(Z_{R}\) are calculated: Here is the light's λ wavelength, and n is really the refraction index. This same width w of the beam is 1.414 larger at a distance from the waist equitable.

To the Rayleigh range \(Z_{R}\) that it is at the focus in W = \(W_{0}\) which, this same beam waist. A laser beam's Rayleigh length (and otherwise Rayleigh range) is the distance out from the beam waist (within the propagation path) where the wave radius is elevated by the squared of 2.

This means that the toggle area of a circular beam is doubled at this point. The Rayleigh beam concept takes into account rotational inertia effects that the Euler-Bernoulli beam theory does not.

As a result, the model is applied to a greater range of regimes. Waves in well before Rayleigh beams on elastomer fundaments are given special consideration.

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Answer:

(I)W=18×10³ J

(ii) P=720W

Explanation:

30 Bricks = 1brick weight× 30 Bricks

30 Bricks= 12×30

=360N

Distance=50m

Time= 25s

1. Work done= Force× Distance

=360×50

= 18×10³ J

2. Power= Work done/ Time

18×10³/25

Power= 720W.

Answer:

Explanation:

F=ma

1.  Describe a situation in which the force required to change the velocity of an object changes based on the mass of the object.

Place both a volleyball and a bowling ball on the lower surface of an inclined plane (e.g., on an asphalt road going uphill).  Roll each one up the hill and measure the difference in effort (force) each requires to start moving.

2. Describe a simple experiment you could perform that would generate data to provide evidence that the change in an object’s motion depends on either the forces on the object or the mass of the object.

Use a coiled spring to propel two objects above (volleyball and bowling ball) and observe both the distance and the velocity after leavging the spring.

Approximately 2.52 x 10¹⁰ years have elapsed between the two measurements.

The decay constant of uranium-238 is 1.55 x 10⁻¹⁰ per year.

The decay constant can be calculated by using the following formula: λ = ln(2) / T1/2where T1/2 is the half-life of the isotope. By plugging in the values for T1/2 in the formula, we can determine the decay constant of uranium-238.λ = ln(2) / T1/2λ = ln(2) / (4.47 x 10)λ = 1.55 x 10⁻¹⁰.

The decay constant of uranium-238 is 1.55 x 10⁻¹⁰ per year. To determine the amount of time that has elapsed between two measurements, we can use the following formula:N = N₀e^(-λt)where N₀ is the initial amount of the isotope, N is the final amount of the isotope, t is the time that has elapsed, and e is the mathematical constant approximately equal to 2.718.

By rearranging the formula, we can solve for t.t = (ln(N₀) - ln(N)) / λWe can use this formula to calculate the time elapsed between two measurements of uranium-238.

Let's assume that the initial amount of uranium-238 is 100 grams and the final amount is 25 grams. We can plug these values into the formula along with the decay constant we found earlier:t = (ln(100) - ln(25)) / (1.55 x 10⁻¹⁰)t ≈ 2.52 x 10¹⁰ years. Therefore, approximately 2.52 x 10¹⁰ years have elapsed between the two measurements.

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When the plates of a charged parallel plate capacitor are pulled apart, the capacitance decreases. As a result, the voltage across the capacitor increases, even though the charge remains constant.

If the plates of a parallel plate capacitor are pulled away from each other after being charged to voltage V and the charge on the plates remains fixed, the separation distance between the plates would increase. As a result, the capacitance of the capacitor would decrease since capacitance is inversely proportional to the distance between the plates. According to the formula Q = CV, where Q is the charge and C is the capacitance, with a fixed charge Q and decreasing capacitance C, the voltage V would increase.

Therefore, pulling the plates away from each other would cause the voltage across the capacitor to increase.

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A particular reflecting telescope has an objective mirror with a focal length of 1.2 m and an eyepiece of focal length 6mm. Hence the magnifying power of this telescope would be 2 meter.

The magnifying power of the telescope is the ratio of the focal length of the object to the focal length of the eyepiece, that is, m = \(\frac{fo}{fe}\)

Given, the focal length of a objective mirror = 1.2 m,

First, we will convert it to centimeters for ease,

∴ Now, the focal length of objective mirror is 120 centimeters, and,

the focal length of an eyepiece is 6mm which is also 0.6 centimeters.

For a telescope, the magnification is given as:

∵ m = \(\frac{fo}{fe}\)

⇒ m = \(\frac{120}{0.6}\)

⇒ m = 200 centimeters or 2 meter.

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Explanation:

Find an energy is E =mgh, so E = 45*10*19=8550j

Answer:

its c

Explanation:

The ball would curve down more sharply on Earth than on the moon.

The motion of the ball thrown forward is influenced by force of gravity. The force of gravity pulls the ball towards the center of the planet.

The motion of the ball on earth will be curved downwards due to the effect of gravity.

The motion of the ball on moon will be curved downward but less sharply due to lesser influence of gravity.

Thus, the ball would curve down more sharply on Earth than on the moon.

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Being abused and watching violence movie

Answer:

addicted to junk food or tv and the mall and getting in truble by grafiti and tresspasing

Explanation:im just guessing

Answer:

4.67 N of force are required

Explanation:

The second Newton's law states the net force exerted on a body of mass m that has an acceleration a, is given by:

F=m.a

On the other hand, the kinematics equations relate the acceleration with the change of speed over time, expressed as:

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

We are given the initial speed of vo=4 m/s on a mass of m=3.5 Kg, the final speed of vf=8 m/s which took t=3 seconds.

The acceleration is:

\(\displaystyle a=\frac{8-4}{3}=1.33\)

\(a=1.33\ m/s^2\)

Thus, the force is:

\(F=3.5\ Kg\cdot 1.33\ m/s^2\)

\(F=4.67\ N\)

4.67 N of force are required

Answer: The gravitational force acting on the table.

Explanation:

Answer:

Two tectonic plates move away from each other

Explanation:

I just did this on AP3X. If this is not what your lookinf for then so sorry

Answer:ummm ok

Explanation:I really don’t get it but ok

Answer:

so what do we need to do

Explanation:

So 245×10³ N/m the force needed to open the hatch from the inside.

We are aware that pressure rises as we go deeper into any liquid, even water.

Following are the changes in fluid pressure with depth.

P = ρgh

Here, represents the fluid's density.

The height of the liquid column is equal to h and the acceleration caused by gravity is g.

Keep in mind that gh represents the pressure increase caused by the liquid column, while the actual pressure would be

P =  ρgh  + P₀

P₀ is the atmospheric pressure

Hatch present at height 25m

Diameter of the hatch = 0.45m , Radius = 0.225m

Pressure inside the submarine = 1 atm

Pressure on hatch from outside = 1 atm + ρgh

Pressure from inside the submarine on the hatch = 1 atm

Net pressure on the hatch = ρgh

ρgh = 10³ × 9.8 × 25 = 245×10³ N/m.

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Astronomers use spectra to determine the composition of a star by analyzing the unique patterns of light emitted or absorbed by the star.

When starlight passes through a prism or a diffraction grating, it gets dispersed into its component colors, creating a spectrum. The spectrum contains distinct dark or bright lines known as spectral lines. These lines correspond to specific wavelengths or colors of light that are either absorbed or emitted by different elements in the star's atmosphere

By examining the positions and intensities of these spectral lines, astronomers can identify the elements present in the star. Each element has a characteristic set of spectral lines, acting as a chemical fingerprint. By comparing the observed spectral lines to known atomic spectra, astronomers can determine which elements are present in the star.

Furthermore, the widths of the spectral lines provide information about the star's temperature, pressure, and motion. Doppler shifts in the lines reveal whether the star is moving towards or away from us and at what velocity.

Through spectroscopy, astronomers can obtain valuable insights into a star's chemical composition, temperature, motion, and other physical properties, contributing to our understanding of stellar evolution and the broader field of astrophysics.

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Answer:

Yes.

Explanation:

Food provides units of energy in the form of calories that give our bodies fuel to perform all functions from the most basic like breathing to more complicated activities. We need a minimum amount of calories from food to sustain basic metabolic functions and more to carry out physical activities. The more active we are, the more food we need.

Answer:

yes

Explanation:

because Our body uses energy for all of its functions and food is the main source of energy. Food contains nutrients that when broken down in the gastrointestinal tract release energy that can be used by the body's cells, tissues and organs for normal function, growth and repair.

The terms Exothermic and Endothermic describe how energy flows in a chemical reaction. The correct option is D.

The bonds between molecules are formed and disrupted during chemical reactions.

When new bonds are created, energy is released. In contrast, energy is absorbed to dissolve bonds. Bond energy is the required force to dissolve the bonds.

When bonds in the reactants are broken in endothermic reactions, more energy is absorbed than is released when new bonds are created in the products.

The temperature of the reaction mixture drops during endothermic reactions.

Thus, the correct option is D.

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For Kepler's third law this can be solved as normal ratios

The number of asteroids which will be detected during the second measurement is 1333.34.

These are referred to objects which revolve round the sun and are characterized by their small rocky shape.

Kepler's third law can be used to solved it using normal ratios

1000/60=x/80

100/6 = x/80

6x = 8000

x= 8000/6

x=1333.34asteroids

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The sun provides the energy that propels water transport in plants.

Photosynthesis is the process by which plants convert light energy into chemical energy that is stored in glucose. This glucose is converted into ATP (adenosine triphosphate), which serves as an energy source for various metabolic processes in the plant, including water transport.

Water is absorbed by the plant's roots and transported upward through the stem and leaves via a process known as transpiration. This process is powered by ATP, which provides the energy required to drive water movement from the roots to the rest of the plant.

So the sun provides the energy for water transport in plants, which is converted into chemical energy through photosynthesis and stored in the ATP.

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The youngest to oldest rock layers are 8, 7, 6, 5, 4, 3, 2, 1.

Rock layers, also known as strata, are horizontal layers of rocks that have been deposited on top of each other over time. Each layer represents a specific time period during which sedimentary materials such as sand, mud, and other debris accumulated and were compressed into solid rock.

The most recent layer is the intrusion, or rock number 8, which was created by a recent lava flow. Next, rock number 7, which was created by recent weathering and erosion after the fault moved rocks 4, 5, and 6, is placed. Following in that order are layers 6, 5, 4, 3, and 1, with layer 1 being the oldest.

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False. It is incorrect to consider a lightbulb as a kind of lever.

A lightbulb is not a kind of lever. A lever is a simple machine that consists of a rigid bar or plank that rotates around a fixed point called a fulcrum. Levers are used to transmit and amplify forces or to change the direction of applied forces. They work based on the principle of torque, where a force is applied at a certain distance from the fulcrum, creating rotational motion.

On the other hand, a lightbulb is an electrical device that produces light when an electric current passes through it. It consists of a filament or a gas-filled chamber enclosed in a glass bulb. The functioning of a lightbulb is based on the principles of electrical resistance and thermal radiation, rather than the mechanical principles of levers.

While levers and lightbulbs both exist as objects, they serve entirely different purposes and operate on different principles. Levers are used for mechanical advantage and force amplification, while lightbulbs are used for generating light through the conversion of electrical energy.

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Pressing a lever in the box's corner is the sole method to get rid of the shocks. The rat picks up pressing the lever quite quickly. This is an illustration of negative reinforcement.

The technique of negative reinforcement can be applied to aid in teaching particular actions.

When something unpleasant or uncomfortable is taken away in response to a stimulus, this is known as negative reinforcement.

Target behavior should gradually grow better with the hope that the unpleasant item will go away.

A rat is placed in an environment where the floor gives the rat small electric shocks. The only way to get rid of the shocks is to press a lever in the corner of the box.

The rat quickly learns to press the lever. This is an example of  negative reinforcement

Hence the given condition is an example of negative reinforcement.

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According to the question, a harmonic wave has frequency 400 hz and wave- length 1.5 m, the speed of the harmonic wave is 600 m/s.

The speed of the wave can be determined by multiplying the frequency and wavelength of the harmonic wave.

The speed of a wave (v) is given by the equation: v = f × λ, where v is the speed, f is the frequency, and λ is the wavelength.

In this case, the frequency (f) is 400 Hz and the wavelength (λ) is 1.5 m.

Therefore, the speed (v) of the wave can be calculated as:

v = 400 Hz × 1.5 m = 600 m/s.

Hence, the speed of the harmonic wave is 600 m/s.

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Answer:

yes it does exert a force, it pushes it up

Explanation:

this is called normal force

if it didn't exert a force the book would keep going down

according to newton every force has an equal amd opposite reaction

so the book exerts a force on the table and vice versa

hope this helped

Force(N)=150N

Area(A)=0.5m^2

Pressure(p)=?

We know that,

Pressure(p)=force/area

Or,p=150/0.5

Or,p=300

So,the pressure on the object is 300pascal.

Hope,it will help you!!

Answer:

Sample Response: If temperature and surface area increase, then the time it takes for sodium bicarbonate to completely dissolve will decrease, because increasing both factors increases the rate of a chemical reaction.

Explanation:

The original dimensions of the piece of metal were approximately 14.62 inches by 24.62 inches.

Let's assume the original width of the rectangular piece of metal is "x" inches.

According to the given information, the length of the rectangular piece is 10 inches longer than its width. Therefore, the length can be represented as "x + 10" inches.

When squares with sides 2 inches long are cut from the corners, the width and length of the resulting box will be reduced by 4 inches each (2 inches from each side). So, the dimensions of the box will be:

Width: x - 4 inches

Length: (x + 10) - 4 inches, which simplifies to x + 6 inches.

The volume of a rectangular box is given by the formula: Volume = Length × Width × Height.

In this case, the height of the box is 2 inches.

Given that the volume of the box is 913 in^3, we can set up the equation:

(x - 4) × (x + 6) × 2 = 913

Simplifying the equation:

2(x^2 + 2x - 24) = 913

2x^2 + 4x - 48 = 913

2x^2 + 4x - 961 = 0

Using the quadratic formula, we find:

x ≈ 14.62 or x ≈ -32.62

Since the dimensions cannot be negative, the width of the original piece of metal is approximately 14.62 inches.

The length can be calculated by adding 10 to the width:

Length ≈ 14.62 + 10 ≈ 24.62 inches.

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Answer:

football, basketball

Explanation: LEAVE AN BRAINLEST!!