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The resistance at opposite ends is 8.4  × 10–6 Ω cm​. The resistance at opposite sides is 0.021 × 10–6 Ω cm​.

The obstruction to current flow in an electrical circuit is measured by resistance. The Greek letter omega represents the unit of measurement for resistance, known as ohms.

Georg Simon Ohm (1784–1854), a German physicist who investigated the connection between voltage, current, and resistance, is the name given to the unit of resistance. Ohm's Law is attributed to him as its creator.

In the given question, The length of the strip = 20 cm,  The breadth of the strip = 01. and The thickness of the strip= 0.4 The resistivity of the copper= 1.7 × 10–6 Ω cm​.

Therefore, The resistance at opposite ends is 8.4  × 10–6 Ω cm​. The resistance at opposite sides is 0.021 × 10–6 Ω cm​.

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Answer:

1. Inertia is the property of an object that resists changes in its state of motion. An object with more mass has more inertia, meaning it is harder to change its motion. For example, a heavy truck has more inertia than a small car, so it takes more force to get the truck moving or to change its direction of motion.

2. Balanced forces are forces that act on an object in opposite directions and are equal in magnitude, resulting in no net force on the object. This means that the object will not accelerate or change its state of motion. Action-reaction forces, also known as Newton's Third Law forces, are forces that act on two objects in response to each other. These forces are always equal in magnitude and opposite in direction, but they do not cancel each other out because they act on different objects. An example of action-reaction forces is the force of a person pushing against the ground and the force of the ground pushing back against the person. While these forces are equal and opposite, they do not cancel out because they act on different objects.

The minimum height that the block must start to make it around the loop without falling off is h = 5R/2

The block slides are around the inside of a circular loop. This shows that or it means that we are dealing with critical velocity in vertical circular motion.

In the critical velocity in the vertical circular motion, the formula for the minimum velocity just at the lowest Point of the vertical circle required to get the critical velocity at the highest point is given as;

v = √(5gR)

Therefore, m will cancel out to give;

½v² = gh

Plugging in the relevant values gives;

½ × [√(5gR)]² = gh

Simplify to get;

5gR = 2gh

g will cancel out to get;

5R = 2h

h = 5R/2

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A secondary pollutant is a type of air pollutant that is created in the atmosphere as a result of chemical or physical interactions here between primary pollutants or between the primary pollutants themselves.

Surfaces of both water and soil can become contaminated by air pollution. This may cause crop death or lower crop yield. Young plants as well as trees can die as a result. Acid rain can be produced when airborne sulfur dioxide and nitrogen oxides particles combine with atmospheric water and oxygen.

Gases and solid particles in the air combine to create air pollution. Particles may include exhaust from cars, industrial chemicals, dust, pollen, and mold spores. A significant contributor to urban air pollution is the gas ozone. Smog is the term used to describe ozone-based air pollution. There are certain toxic air contaminants.

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Answer:

Explanation: Force = mg as the wire is fixed at one point and the load is inserted at one end.

g=9.8m/s²

F= mg

F= 20×9.8= 19.6 newton

Strain= Δl/L

where Δl= change in length

and L= original length

Strain = 0.24×0.001 m/4m

Strain=0.00006

Stress= F/A

where A = cross sectional area

therefore A = π× (diametre/2)²

A=3.14×1²≈3.14 mm²= 0.000000314m²

Stress = 19.6/0.000000314=62420382 Pascal

Initially rolling inside a horizontal circle five meters above the ground at a speed of two meters per second, the ball breaks the string as it approaches true North. Though it is falling, it is still heading in the direction

The lower string, however, is the one that snaps if it is forcefully yanked. The prevailing theory holds that the mass's inertia prevents it from moving and, as a result, from pulling on the top string.

If both strings are equally strong, the top string will break sooner. However, a change in tension from the lower string takes a moment to transfer because of the inertia of a hanging object.

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Answer:

Answer:

let the first point be a second be b third be c fourth be d and last point be e.

The point a and d are incorrect. because tye plotting of the is incorrect

A polygon whose internal angles are all less than 180 degrees is referred to as a convex n-gon. The same can be computed as:

The formula (n-2) × 180 degrees, where n is the number of sides in the polygon, gives the sum of the measures of the interior angles of a convex n-gon.

The total of the measures of the remaining (n-x) angles must equal (n-2) × 180 - 131x degrees if x is the number of internal angles of the n-gon that measure 131 degrees. Since the internal angles of a convex n-gon must have measures that are less than 180 degrees,

this implies that

(n-2)180 - 131x < (n-x)180

Solving this inequality for x,

we find that

[tex]x < \frac{(n-2)}{3}[/tex]

Therefore, the maximum number of interior angles of a convex n-gon that can measure 131 degrees is (n-2)/3.

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The 8 types of waves found on the electromagnetic spectrum, from longest to shortest wavelength, are: Radio waves , Microwaves , Infrared radiation, Visible light, Ultraviolet radiation, X-rays, Gamma rays.

The electromagnetic spectrum is a range of electromagnetic waves that includes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

The wavelength of an electromagnetic wave is the distance between consecutive points of equal phase in the wave. The shorter the wavelength, the higher the frequency of the wave.

Radio waves have the longest wavelength and the lowest frequency of the electromagnetic waves. Gamma rays have the shortest wavelength and the highest frequency.

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When a mass m particle is released onto a smooth inclined plane (where the frictional force F=0), it will glide down the slope.

We resolve in the direction of motion in order to get the particle's sliding acceleration.

F=ma, 

mg cos(90∘−θ)=ma, 

g cos(90∘−θ)=a, 

g sin(θ)=a.

How many Newtons is the net force while the block is travelling at a constant speed?

Zero. Newton's first law of motion states that any object travelling at a constant speed experiences no net external forces, hence the total amount of forces acting on the object must be zero. The mathematical expression for an item being under no net external force is Fnet=0 or F=0.

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The moment of inertia of the system is I = 3ml^2/4 and the radius of gyration is r = l/2√3.

To find the moment of inertia of the system, we need to consider the contributions of each rod to the overall rotational inertia. The moment of inertia of a rod about an axis passing through its center of mass and perpendicular to its length is given by I = ml^2/12. Since there are three rods in the system, the total moment of inertia is I = 3ml^2/12 = 3ml^2/4.

The radius of gyration is a measure of how far the mass of the object is distributed from the axis of rotation. For an object with uniform mass distribution, the radius of gyration is given by r = √(I/m). In this case, the mass of the system is 3m, so the radius of gyration is

This is the distance from the center of mass to the point where the mass of the system can be considered to be concentrated for the purpose of calculating rotational dynamics.

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Xiao speculates that the unheard portion refers to a verb, whereas Jess speculates that it relates to a noun.

Anything related to sound in terms of receiving, transmitting, reproducing, or its particular frequency is referred to as audio. A stereo is an illustration of an audio object. YourDictionary.

Audio Physical loudspeakers enjoy a solid reputation among music enthusiasts and are renowned for both their performance and high-quality design. Throughout the more than 30 years of the marque, this history of quality has persisted despite some more difficult times.

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The temperature increase of each car will be 0.42 degree celcius

Describe kinetic energy.

The energy of motion, or kinetic energy, can be seen in the movement of an item or subatomic particle. Kinetic energy is present in every moving object and particle.

Thermal energy is the term used to describe the energy present in a system that determines its temperature. The movement of thermal energy is heat.

Energy cannot be created or destroyed; it can only be changed from one form of energy to another, according to the law of conservation of energy. This implies that a system always possesses the same amount of energy, barring external energy addition.

v is 50km/h i.e. 13.889m/s

K=1/2mv2

Q=mcΔT

c = 450

1/2mv2=mcΔT

∴ ΔT=v2/2c

ΔT= 13.88*13.88/ 450

ΔT= 0.42 degree celcius

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Answer:

thing will slide apart

Explanation:

Friction prevents objects from sliding apart. Everything would slide to the lowest point if there was no friction. It would be impossible to scale anything. We will be unable to write without friction.

One piece of evidence from the New Horizons mission that suggests recent or ongoing geological activity on Pluto is the presence of mountains with smooth, sediment-like material on their surfaces.

This material is thought to be composed of water ice that has been altered by geologic processes, such as the flow of glaciers or the collapse of underground caverns.

Other evidence of recent or ongoing geological activity on Pluto includes the presence of ridges, valleys, and other landforms that suggest the existence of tectonic activity, as well as the existence of ice on the surface that has a relatively high surface temperature, indicating that they may have recently been exposed to heat.

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Answer:

The answer is 5 m/s²

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

where

f is the force

m is the mass

From the question we have

We have the final answer as

5 m/s²

Work of art from the Amarna Period that is abstract or descriptive in nature.

That momentarily altered during the Amarna Period. The neck, arms, and hands were among the longer characteristics on the body. The traditional Egyptian painting form was briefly replaced by this strange new art form, which resulted in portraits of people that were virtually caricatures.

Religious iconoclasts are associated with the Amarna Period. Because he only worshiped the Aten, the pharaoh Amenhotep IV changed his name to Akhenaten. At Tell el-Amarna in Middle Egypt, he constructed a brand-new capital and cemetery.

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Explanation:

To derive an equation for the minimum detectable fractional change in osteoporotic bone using a monochromatic beam of incident photons, we can consider the factors that affect the sensitivity of the measurement.

One important factor is the energy resolution of the detector, which determines the ability of the detector to distinguish between different energies of photons. The energy resolution can be represented by the parameter FWHM (full width at half maximum), which is the width of the energy peak at half of its maximum height. A higher FWHM corresponds to a lower energy resolution, which means that the detector is less sensitive to small changes in energy.

Another factor is the intensity of the incident photon beam, which determines the number of photons that are detected by the detector. A higher intensity corresponds to a higher number of photons and a higher signal-to-noise ratio, which makes it easier to detect small changes in the energy of the photons.

We can combine these factors into an equation that represents the minimum detectable fractional change in osteoporotic bone. Let ΔE be the minimum detectable change in energy of the photons, FWHM be the energy resolution of the detector, and I0 be the intensity of the incident photon beam. We can represent the minimum detectable fractional change in the osteoporotic bone as ΔE/E, where E is the average energy of the photons in the incident beam.

Using these variables, we can write the equation as:

ΔE/E = K * FWHM/I0

where K is a constant that depends on the specific properties of the detector and the measurement setup. This equation shows that the minimum detectable fractional change in osteoporotic bone

Answer:

Explanation:

The object's height is the vertical position along its trajectory.

It moves at a pace of 116.7 meters per second at first. The velocity at time t = 0 is known as the initial velocity (u). It is the rate at which motion initially manifests itself.

What is the formula for calculating the starting value?

In mathematics, the initial value of a function represents the function's y-intercept. Beginning values can also be established using the constant in an equation. It helps to comprehend the y-intercept in graph functions.

Is the initial and ultimate velocities the same?

Initial and end velocities are equal. Consequently, there will be no difference at whatever value of "t." Consequently, this establishes that an object's initial velocity is its speed before being affected by acceleration a.

Briefing:

distance(s) = 1km = 1 × 1000m = 1000m

Time(t) = 60– 30 = 30s

initial velocity = u

acceleration (a) = 10m/s

using the formula

S = ut + ½at²

1000 = 30u + ½ × 10 × 30²

1000 = 30u + 5 × 900

1000 = 30u + 4500

30u = 4500 – 1000

30u = 3500

divide both sides by 30

u = 116.7m/s

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Answer:

The magnetic force on a moving charged particle is given by the Lorentz force law, which states that the force is equal to the product of the particle's charge, its velocity, and the magnetic field. Since the magnetic field points in the positive y direction and the velocity of the electrons is in the positive x direction, the magnetic force on the electrons will point in the negative z direction (assuming we are using the right-hand rule to determine the direction of the force). The magnitude of the force can be found using the formula above: F = q * v * B, where q is the charge on the electrons, v is their velocity, and B is the strength of the magnetic field. The charge on an electron is -1.6 x 10^-19 C, so the magnitude of the force on the electrons will be: F = (-1.6 x 10^-19 C) * (4.6 x 105 m/s) * (2.8 T) = -2.19 x 10^-13 N.

When the mass is at its maximum displacement from equilibrium, the instantaneous velocity 'is zero'.

What is velocity?

A measure of a moving object's speed and direction is called velocity. It can be expressed as a vector quantity with direction and magnitude (speed).

According to the given question:

An object has exhausted all of its potential energy to move when it reaches its maximum displacement from equilibrium. Consequently, the object has zero instantaneous velocity because it lacks momentum to continue moving.

Hence, Option A is correct.

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The Romans invented a new concrete recipe that combined pozzolana, a fine volcanic ash found in Southern Italy, with lime and water to make a strong, resistant kind of concrete.

The Roman term for concrete was opus caementicium, which meant that it was mixed with small stones. The Roman Empire's preferred building material was concrete. It has been utilized in monuments such as Rome's Pantheon, as well as wharves, breakwaters, and other harbor buildings. This is why concrete does not last as long as natural rocks. However, this is not how Roman concrete works. Theirs was made from volcanic ash, lime, and seawater, utilizing a chemical reaction that Romans may have observed in naturally cemented volcanic ash deposits known as tuff rocks.

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By attaching a mass of 100 g too spring 1. Play the simulator. Measure the duration of the stopwatch for 10 full cycles. The measured period by dividing the total time by 10 is 2 seconds.

The period of oscillation of the mass on spring 1, you would need to measure the time it takes for the mass to complete 10 complete cycles. You can do this by starting a stopwatch when the mass is in the down position and stopping the stopwatch when the mass returns to the down position after completing 10 cycles. Once you have measured the total time for 10 complete cycles, you can calculate the period by dividing the total time by 10. For example, if the total time for 10 complete cycles is 20 seconds, then the period would be 20 seconds / 10 = 2 seconds. We will call this value Tz.

After measuring the period of oscillation of the mass on spring 1, you should pause the simulator and remove the mass from the hook of the spring. This will allow you to perform any additional measurements or calculations without interference from the mass.

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Statements that is true regarding the image formed by the lens is real, inverted and smaller than the object.

Lens that converges rays of light that are traveling parallel to its principal axis is called converging lens. Converging lens is identified by their shape. They are thick across the middle and thin at the upper and lower edges.

Given; focal length= 15cm , p = 15cm

1/p + 1/q = 1/f

​ 1/50+ 1/q= 1/15

q =21.4cm

Magnification, M=−q/p

=−0.429

Positive image distance implies that image is real and negative magnification confirms that image is inverted. M = -0.429 implies that image is smaller than object.

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When David senses Rebecca's position at di while she is in front of him at a distance of do, di will be +84 cm.

The focal length of an optical system, which is the inverse of optical power, determines how strongly light converges or diverges. Positive focus length systems are considered to converge light, whilst negative focal length systems are said to diverge light.

the focus distance is +40 cm

m = -0.45 is the magnification.

positive focal length and a negative magnification.

The lens in question is convex.

for a lens

m = di/do and 1/f = (1/di) - (1/do)di

= -0.4do1/f = (1/-0.4do) - 1/do do

= -210 cmdi = -0.45 * -210

di = +84 cm

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The Heliocentric Theory of the world, put forward by Copernicus, held that the sun was the center of the universe and that the earth rotated around it.

In the foot-pound-second (English, or customary) system, one newton is equivalent to around 0.2248 pounds of force or 100,000 dynes in the centimeter-gram-second (CGS) system.

The letter N is frequently used to shorten the phrase "newton" in physics and engineering documents. In the absence of any other forces, one newton is the force necessary to accelerate a mass of one kilogram at a pace of one meter per second squared.

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The plot of U versus x is given in the attachment below. The speed of the particle at x = 3.5 m is 8.37 m/s.

Here, the mechanical energy remains constant as the particle moves.

As, the mechanical energy is conserved, we can write, Ub + Kb = Ua + Ka

Making Ka as subject, we have,

Ka = Ub + Kb - Ua = 12 + 4 - 9 = 7 J

We know that, Ka = [m* (va)²]/2

The speed of the particle at x = 3.5m (within region A) is

va = √(2* Ka)/m = √(2* 7)0.2 = 8.37 m/s.

Thus, the speed at x = 3.5m is 8.37 m/s.

The question is incomplete. The complete question is ' Figure 8−49  shows a plot of potential energy U versus position x of a 0.200kg particle that can travel only along an x axis under the influence of a conservative force. The graph has these values : Ua = 9.00 J, Uc = 20.00 J, and Ud = 24.00 J. The particle is released at the point where U forms a potential hill of height  Ub = 12.00 J, with kinetic energy 4.00 J. What is the speed of the particle at x = 3.5 m. The attachment below has the missing plot.

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he change in the pressure of the air trapped in the cylinder if its volume is increased by 20% at a constant temperature is 745 mmHg.

The change in the pressure of the air trapped in the cylinder if its volume is increased by 20% at a constant temperature is calculated from Boyle's law equation as follows:

The  Boyle's law equation is given as follows:

P₁V₁ = P₂V₂

where;

P₁ is the initial pressure

V₁ is the initial volume

P₂ is the final pressure

V₂ is the final volume

From the data given,

P₁ = 760 mmHg

V₁ = V

P₂ = ?

V₂ = V + 0.2 V

V₂ = 1.02 V

P₂ = 760 * V / 1.02 V

P₂ = 745 mmHg

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Answer:

Δy = viy t + (1/2)gt^2

Explanation:

[tex]y = y_{i}+v_{iy}_t + (1/2)a_{y}t^{2}[/tex]

Δy = viy t + (1/2)gt^2