Which graph shows the change in velocity of an object in free fall?

The radiation resistance of the loop is 99.9 % and the power radiated 4.97 KW.

The real resistance = 8 π² (L/λ)²

L = 2πr

λ = C/f

power radiated = \(I^{2}\)/r = 80 × 3.14 × 3.14 × 4× 3.14 × 3.14 × 0.4 × 0.4/2500

Power radiated =  4.97 KW

Radiation efficiency = Radiation resistance / radiation resistance + ohm resistance

ρL/A = 8 × \(10^{-8}\)  = 1.99 /  8 × \(10^{-8}\) + 1.99

99.9 %

The definition of radiation is energy that emanates from a source and moves at the speed of light through space. This energy has wave-like characteristics and is surrounded by an electric and magnetic field. Electromagnetic waves are another name for radiation. In nature, there are many different types of electromagnetic radiation. One example is visible light. The highest energy radiation comprises x-rays, gamma rays, and ultraviolet light. Both X-rays and gamma rays are extremely energetic. They can take electrons out of atoms when they engage with them, ionizing the atom in the process. Our cells' DNA can be harmed by radiation. High radiation exposures can result in cutaneous radiation injuries (CRI) or acute radiation syndrome (ARS) (CRI).

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Not including the endpoints, there are 3 nodes.

In a wave, a node is a stationary point. For example in a vibrating string of a guitar, the endpoints would be nodes.

But here we need to ignore the endpoints, we only know that the wave has two wavelengths.

For a wave with N wavelengths the number of nodes that are not endpoints is just given by 2*N - 1  (while if we counted the endpoints we would have 2*N + 1).

So in this case we have N = 2, then there are 2*2 - 1 = 3 nodes.

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Ability of the joints and muscle to move through in full range of motion?

answer : flexibility......

The charges of the spheres after connection will be the same as the charge of the left sphere. The total charge of the two spheres after connection is equal to the initial charge of the left sphere.

To understand this, it is important to know that electric charge is a conserved quantity. This means that the net charge of a system cannot change. Therefore, if two objects with opposite charges (like the two spheres) are connected, the charges of the two objects will become equal and the total charge of the two spheres will remain the same as the initial charge of the left sphere.
To further understand this concept, consider two spheres with opposite charges. If the two spheres are not connected, then the total charge of the two spheres is equal to the sum of the charges of each sphere. However, if the two spheres are connected, the net charge of the system cannot change. Therefore, the charge of each sphere will become equal and the total charge of the two spheres after the connection will remain the same as the initial charge of the left sphere.

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Answer:

false

Explanation:

The gravity in space is not the same as the gravity on Earth

Answer:

give brainliest please

Explanation:

T- lymphocytes or T cells

The lightning is occurring approximately 5.1  kilometers away if the flash to bang is 15 seconds. The speed of sound in dry air at a temperature of around 20 degrees Celsius is approximately 343 (m/s)

The flash to bang method is a way to estimate the distance of a lightning strike based on the time between seeing the flash of lightning and hearing the thunder. Sound travels at a speed of approximately 343 meters per second (m/s) in air. By multiplying this speed by the time interval between the flash and the bang, which is 15 seconds in this case, we can determine the distance.

To calculate the distance, we use the formula:

\(\begin{equation}\text{Distance} = \text{Speed} \times \text{Time}\)

Given that the time between the flash and the bang is 15 seconds, we can substitute the values into the formula:

\(\text{Distance} = 343\ \text{m/s} \times 15\ \text{s} = 5145\ \text{m} = 5.145\ \text{km}\)

Therefore, if the flash to bang is 15 seconds, the lightning strike is approximately 5.1  kilometers away.

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Answer:

0.50m/s

Explanation:

Average velocity is the change in displacement of a body with respect to time.

Velocity = ∆S/∆t

∆S = 100m - 70m

∆S = 30m

∆t = 2min - 1 min

∆t = 1min = 60secs

Substitute the given parameters into the formula for velocity

Velocity = 30m/60s

Velocity = 1/2 m/s

Average Velocity = 0.5m/s

Answer: I think the answer is d

Explanation: sry if wrong

Answer:

Workdone = 1960 Joules.

Explanation:

Given the following data;

Mass = 5kg

Force = 49N

Height (distance) = 40m

To find the workdone;

Workdone = force * distance

Substituting into the equation, we have;

Workdone = 49*40

Workdone = 1960 Joules.

Therefore, the amount of work done on the bowling ball to lift it is 1960 Joules.

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

Light will reflect at the same angle off a smooth surface as when it first touches it. The direction of reflected light beams for a flat surface is the same. Specular reflection is what is happening here.

When light reflects off of a surface, it happens. Light will reflect at the same angle it was incident upon if the surface is glossy and smooth.

A smooth polished surface is what is referred to as a reflection when a light ray strikes it and bounces back. Surface reflection occurs when a light beam hits it and then leaves it.

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Answer: The part of color that's reflected is the red that bounces off the paper.

Hope this helps you!!!

(☞ﾟヮﾟ)☞      ☜(ﾟヮﾟ☜)

Answer:

Explanation:

The amplitude of resultant wave as the result of  overlap of two waves depends upon the phase difference between the two.  If the waves meet crest to trough , the phase difference is 180 degree or they are in opposite phase . Hence they will destroy each other . The amplitude of resultant wave can be obtained by subtracting the amplitudes of two waves. They will interfere destructively.

Amplitude of resultant gives waves = 4.6 - 2 = 2.6 cm.

In conclusion, when the allele frequency of the dominant allele is 0.4, the value used for the term p² in the equation p² + 2pq + q² = 1 is 0.16.

The term p² in the equation p² + 2pq + q² = 1 represents the frequency of individuals in a population who are homozygous for the dominant allele.

In this equation, p represents the frequency of the dominant allele, and q represents the frequency of the recessive allele.

Given that the allele frequency of the dominant allele is 0.4, we can substitute this value into the equation. So, p = 0.4. To find p², we simply square the value of p.

p² = (0.4)²

= 0.16

Therefore, the value used for p² in the equation is 0.16.

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The mass of oil contained in the tank is 2400 kilograms.

To calculate the mass of oil contained in the tank, we need to determine the volume of oil first. The volume of the oil can be calculated using the formula:

Volume = Base Area × Height

Given:

Base Area = 2.5 square meters

Height = 1.2 meters

Volume = 2.5 m² × 1.2 m

Volume = 3 cubic meters

Next, we can calculate the mass of the oil using the formula:

Mass = Density × Volume

Given:

Density of oil = 800 kg/m³

Volume = 3 cubic meters

Mass = 800 kg/m³ × 3 m³

Mass = 2400 kilograms

Therefore, the mass of oil contained in the tank is 2400 kilograms.

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another answer for acellus is 143 m/s it worked for me

The speed of the charge is approximately 2.857 m/s.

To find the speed of the charge, we can use the formula for the magnetic force on a charged particle moving through a magnetic field:

Force (F) = q * v * B * sin(θ)

Where:

F is the force on the charge (given as 2.14 x \(10^-8\)  N),

q is the charge of the particle (given as 2.99  x \(10^-6\)C),

v is the speed of the charge (what we want to find),

B is the magnitude of the magnetic field (given as 5.00 x \(10^-5\) T),

θ is the angle between the direction of motion and the magnetic field (given as 10.0°).

First, we need to convert the angle from degrees to radians:

θ (in radians) = 10.0° * (π / 180°) ≈ 0.174532925 radians

Now, we can rearrange the formula to solve for the speed (v):

v = F / (q * B * sin(θ))

Substitute the given values into the equation:

v = 2.14 x \(10^-8\) N / (2.99 x \(10^-6\) C * 5.00  x \(10^-5\)  T * sin(0.174532925))

v ≈ 2.857143 m/s

Therefore, the speed of the charge is approximately 2.857 m/s.

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Answer:

Why Sustainable Fishing Is Important Sustainable fishing allows humans to continually fish in oceans and other bodies of water indefinitely for edible seafood. Overfishing can cause a negative domino effect in water-based ocean systems that is difficult to stop.

Explanation:

hit the heart :)

Resource conservation plays a crucial role in benefiting the environment in multiple ways. Therefore, correct answer is d. All of the above.

Resource conservation plays a crucial role in benefiting the environment in multiple ways. Firstly, by conserving resources, such as forests and wetlands, natural habitats can be preserved, promoting biodiversity and protecting endangered species (option a).

Secondly, resource conservation can help reduce water pollution by implementing efficient water management practices, preventing overuse and contamination (option b). Additionally, resource conservation contributes to the reduction of air pollution by promoting energy efficiency, sustainable transportation, and the use of renewable energy sources (option c).

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The correct match of the descriptions to the below people are 23 - F, 24 - H, 25 - D, 26 - I, 27 - A, 28 - B.

23 - F Galileo: Galileo Galilei is credited with discovering the phases of Venus using a telescope. Through his observations, he observed that Venus went through a series of phases similar to those of the Moon, which supported the heliocentric model of the solar system.

24 - H Kepler: Johannes Kepler was the first to consider ellipses as orbits. He formulated the laws of planetary motion, known as Kepler's laws, which stated that planets move in elliptical paths with the Sun at one of the foci. Kepler's work revolutionized our understanding of celestial mechanics.

25 - D Aristotle: Aristotle, the ancient Greek philosopher, is considered one of the foremost thinkers in history. While his contributions span various fields, including philosophy and natural sciences, his views on astronomy were geocentric. He believed that the Earth was the center of the universe and that celestial bodies moved in perfect circles around it.

26 - I Nicolaus Copernicus: Nicolaus Copernicus was an astronomer who proposed the heliocentric model of the solar system, in which the Sun, rather than the Earth, was at the center. Copernicus's revolutionary idea challenged the prevailing geocentric view and laid the foundation for modern astronomy.

27 - A Eratosthenes: Eratosthenes was an ancient Greek mathematician and astronomer who made significant contributions to geography and astronomy. He is known for his accurate measurement of the Earth's circumference. By measuring the angle of the Sun's rays at two different locations, he estimated the Earth's circumference with remarkable accuracy.

28 - B Aristarchus: Aristarchus of Samos is credited with developing the first predictive model of the solar system. He proposed a heliocentric model centuries before Copernicus, suggesting that the Sun was at the center of the universe, with the Earth and other planets orbiting it. Aristarchus's model was a significant departure from the prevalent geocentric view of the time.

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The magnetic field exactly midway between the wires, as viewed from your position, is zero.

Explanation:-

When two horizontal wires with identical currents carry current directly towards an observer, the magnetic field exactly midway between the wires, as viewed from the observer's position, is zero or no magnetic field is produced due to the wires. This is because the magnetic fields produced by both wires cancel each other out.

Let’s first talk about the direction of the magnetic field produced by the wires.

According to the right-hand rule, the magnetic field for a current-carrying wire points towards the direction of the curl of fingers of the right hand when the thumb points in the direction of the current.

A current flowing in the plane of the page towards an observer means that the current is pointing out of the page. Therefore, the magnetic field due to each wire will be pointing in the direction perpendicular to the current-carrying wire in a counterclockwise direction (as viewed from above).

So, if we look at the point directly midway between the two wires, we will see that the magnetic fields from each wire are equal in magnitude and opposite in direction. As a result, they will cancel each other out at the midpoint and there will be no net magnetic field there.

Therefore, the answer is that the magnetic field exactly midway between the wires, as viewed from your position, is zero.

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The de Broglie wavelength of a particle is inversely proportional to its momentum, so if the particle's kinetic energy is doubled. This means that the de Broglie wavelength will be halved, so the factor answer is 0.5.

Wavelength is the distance between two successive points of a propagating wave which have the same amplitude and phase. Wavelengths are typically measured in meters, centimeters, or nanometers, depending on the type of wave. Wavelengths range from radio waves, which have the longest wavelength, to gamma rays, which have the shortest wavelength. Waves with different wavelengths have different properties like speed, frequency, and energy. Wavelength is an important factor in determining the behavior of a wave, such as its reflection, refraction, interference, and diffraction. Wavelength also determines the type of electromagnetic radiation a wave produces, such as visible light, ultraviolet radiation, or infrared radiation. Wavelength is a fundamental property of waves and is used to describe the properties of light, sound, and other forms of energy.

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The relative motion of the train next to her is the motion of the other train in her rest frame.

As the other train leaves, it seems to Sunita as if her train is moving backwards

Reason:

The motion of the train Sunita is taking is given by the rate of movement of

objects outside the train from the front side of the train towards the back

side of the train, that way she can tell that the train is moving.

The motion of the other train from the rear side of the train from the rear

side of the train to the front side is a reverse motion to what Sunita

observes when the train is moving forward. Therefore, as the other train

leaves, it seems to Sunita as if her train is moving backwards.

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Given

mj = 65 kg

mc = 78 kg

voj = 5.75 m/s

after collision

vfj = vfc = 0 m/s

Procedure

The law of momentum conservation can be stated as follows. For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.

The velocity before the collision would be 4.8m/s

The average power of an RLC circuit can be zero when the resistor carries zero current and both the inductor and capacitor are in an ideal reactive state where the voltage and current across them are out of phase by 90 degrees. This can happen under specific conditions, such as when the circuit is driven by a symmetric AC waveform or when the circuit is in a balanced state where the effects of the inductor and capacitor cancel each other out.

The average power of an RLC (Resistor-Inductor-Capacitor) circuit can be zero under specific circumstances. To understand these circumstances, let's consider the three components of the circuit individually:

Resistor: The power dissipated in a resistor is given by P = I^2 * R, where I is the current flowing through the resistor and R is its resistance. For the average power to be zero, the current through the resistor must be zero. This can occur when there is no applied voltage or when the voltage waveform is symmetric around zero and the positive and negative cycles cancel each other out over a complete cycle.

Inductor: The power absorbed or supplied by an inductor is given by P = V * I, where V is the voltage across the inductor and I is the current flowing through it. The average power can be zero if the voltage across the inductor and the current through it are out of phase by 90 degrees. In other words, the inductor is in an ideal reactive state where it neither absorbs nor supplies any net power over a complete cycle.

Capacitor: The power absorbed or supplied by a capacitor is given by P = V * I, where V is the voltage across the capacitor and I is the current flowing through it. Similar to the inductor, the average power can be zero if the voltage across the capacitor and the current through it are out of phase by 90 degrees. The capacitor is also in an ideal reactive state where it neither absorbs nor supplies any net power over a complete cycle.

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Answer:

c) Both the parts will weigh the same

Explanation:

center of gravity is based on weight so if you cut down the center of gravity you would have 2 equal parts

(might be D if it is cutting against the center of gravity)

Answer:

rgg3ge4gg434g4g4g4g44g

Explanation:

grg4g4g4y44h44h

To determine the distance between the two charged spheres, we can use Coulomb's law, which states that the force between two charged objects is given by:

F = k * (|q1| * |q2|) / r^2

Where:

- F is the force between the charges

- k is the electrostatic constant (k = 9 x 10^9 N m^2/C^2)

- |q1| and |q2| are the magnitudes of the charges on the spheres

- r is the distance between the centers of the spheres

Given that the force is 8.7 x 10^-5 N, the charge on the first sphere is 9 nC (9 x 10^-9 C), and the charge on the second sphere is 7 nC (7 x 10^-9 C), we can rearrange the formula to solve for the distance r:

r = √((k * |q1| * |q2|) / F)

Substituting the values:

r = √((9 x 10^9 N m^2/C^2 * 9 x 10^-9 C * 7 x 10^-9 C) / (8.7 x 10^-5 N))

Simplifying the expression:

r = √((567 x 10^-18 N m^2/C^2) / (8.7 x 10^-5 N))

r = √(6.517 x 10^-14 m^2/C^2)

Now, we convert the result to centimeters:

r = √(6.517 x 10^-14 m^2/C^2) * (100 cm/m)

r ≈ 8.08 x 10^-7 m * 100 cm/m

r ≈ 8.08 x 10^-5 cm

Therefore, the distance between the charged spheres is approximately 8.08 x 10^-5 cm.

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To find the current in the solenoid, we can use the formula that relates the magnetic field (B), number of turns (N), current (I), and length (L) of the solenoid:

B = μ₀ * (N/L) * I

Where:

B is the magnetic field (2.20 mT = 2.20 × 10⁻³ T)

μ₀ is the permeability of free space (4π × 10⁻⁷ T·m/A)

N is the number of turns (37.0)

L is the length of the solenoid (6.10 cm = 6.10 × 10⁻² m)

I am the current (to be determined)

Rearranging the formula to solve for I:

I = (B * L) / (μ₀ * N)

Substituting the given values:

I = (2.20 × 10⁻³ T * 6.10 × 10⁻² m) / (4π × 10⁻⁷ T·m/A * 37.0)

Simplifying:

I = 4.70 A

Therefore, the current in the solenoid is approximately 4.70 Amperes.

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