Wat is the statement of law intertia

Answer:

The sound intensity that the other student measure, I₂ is expected to be;

A) 6.2 × 10⁻⁸ W/m²

Explanation:

The measure of sound intensity is given by the following formula;

\(I = \dfrac{P}{4 \cdot \pi \cdot R^2}\)

\(\dfrac{I_2}{I_1} = \dfrac{R_1^2}{R_2^2}\)

Where;

I = The intensity

R = The radius

P = The power of the sound

Whereby we have;

The distance of the two people talking, R₁ = 3.0 m

The measure of the sound intensity, I₁ = 1.1 × 10⁻⁷ W/m² (from an online source)

The distance of the other student from the two people talking, R₂ = 4.0 m

Therefore, the estimate of the sound intensity, I₂, is given as follows;

\({I_2} = \dfrac{R_1^2}{R_2^2} \times {I_1}\)

\({I_2} = \dfrac{(3.0 \, m)^2}{(4.0 \, m)^2} \times 1.1 \times 10^{-7} \ W/m^2 = 6.1875 \times 10^{-8} \ W/m^2\)

I₂ = 6.1875 × 10⁻⁸ W/m²

∴ The sound intensity that the other student measure, I₂ ≈ 6.2 × 10⁻⁸ W/m²

Answer:

As = 7.33 [m/s]

Explanation:

To solve this problem we must use the definition of the average speed, which is equal to the relationship between the distance over time.

As = x/t

where:

As = average speed [m/s]

x = distance = 132 [m]

t = time = 18 [s]

As = 132/18

As = 7.33 [m/s]

A neutral atom in the gas phase needs a certain amount of energy to have its electron removed before it may become ionized. This atom might be ionized by electromagnetic radiation with a maximum wavelength of \(8.06 \times 10^{-7} m\)

Using the formula \(\lambda = \frac{hc}{E}\), where h is Planck's constant \((6.62 \times 10^{-34} J s^{-1} )\) c is the speed of light \((2.998 \times 108 \frac{m}{s})\) And is the wavelength of the electromagnetic radiation, one may determine the largest wavelength of electromagnetic radiation that could ionize this atom.

We can determine the largest wavelength that can produce the ionization energy by rearranging the equation. Microwaves have the longest wavelength and the lowest frequency of the electromagnetic waves mentioned.

\(\lambda = \frac{hc}{E} = (6.62 \times 10^{-34} Js^{-1} ) \times (2.998 \times 10^{8} m/s) / (6.24 \times 10^{-19} J) = 8.06 \times 10^{-7} m\)

Therefore, The longest wavelength of electromagnetic energy that may ionize this atom is, hence, \(8.06 \times 10^{-7} m.\)

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Answer:

The tiny object's acceleration will be much greater.

Explanation:

Because of Newton's second law of motion, (which is F=ma or Force= Mass*acceleration), then if the force maintains the same (which in this case it does, because it says 50 N to both obejcts) and  one mass was much greater than the other, then the ould be less for the more massive object and much greater for the lighter object.

For example:  If 50 N were applied to a 500 kg object and a 50 kg object, then theformulas for each (respectively) are:

50 = 500*acceleration

and

50 = 50*acceleration

(Because of Newtons Second Law of Motion)

Then, solving for the equations, we get for equation 1:

Acceleration = .1 m/s^2

And for equation 2:

Accleration = 1 m/s^2

Thus, you can see that more massive objects (when applied he same amount of force as the smaller object) clearly have less accleration than the smaller objects.

Formula that would be used to find current i if power p and voltage v are P = V * I

I = P/V

Energy flow or conversion rate is measured in units of time as ower. One joule per second, or one watt, is the definition of power in the International System of Units.

Voltage is the variation in electric potential between two places. It is sometimes referred to as electric pressure, electric tension, or potential difference. The work required to transport a test charge between two places in a static electric field correlates to this.

The rate at which electrons move across a conductor is called electric current. The ampere is the SI unit for electrical current. A substance's molecular structure contains tiny particles called electrons. These electrons can be held firmly at times or loosely at other times.

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Answer:

We have the position vector given in terms of time t. r(t) = t^3*i + t^2*j

To find the velocity vector we have to differentiate r(t) with respect to time.

r'(t) = 3t^2*i + 2t*j

The vector representing acceleration is the derivative of the position vector

r''(t) = 6t*i + 2*j

When time t = 2.

The velocity vector is 3*2^2*i + 2*2*j

=> 12*i + 4*j

The speed is the absolute value of the velocity vector or sqrt(12^2 + 4^2) = sqrt (144 + 16) = sqrt 160

The acceleration vector is 6*2*i + 2*j

=> 12*i + 2*j

The required acceleration at t=2 is 12*i + 2*j and the speed is sqrt 160.

Explanation:

Can I have thx and brainliest?

Answer:

The velocity is \(u = 19.1 \ m/s\)  

Explanation:

From the question we are told that

  The time taken by the ball is  t =  2.5 seconds

  The angle made with the horizontal is \(\theta = 40^o\)

Generally the vertical component of the initial velocity is mathematically represented as

         \(u_y = u sin (\theta )\)

Generally at maximum height of the ball the velocity is  v  =  0 m/s and  the time take to reach this maximum height is

    =>         \(t_m = \frac{t}{2} = \frac{2.5}{2} = 1.245 \ s\)  [This because t is duration for the to a fro travel of the ball]

Generally from kinematic equation

        \(v = u_y + gt\)

Here  \(g = -9.8 m/s^2\) given that the direction is against gravity

=>     \(0 = u sin (40) - 9.8 * [1.25]\)

=>     \(0 = 0.6428u - 12.25\)  

=>     \(u = 19.1 \ m/s\)  

False. Norton's Theorem states that any two-terminal source can be reduced to an equivalent current source in parallel with an equivalent resistance, not an equivalent shunt resistance, simplifying complex electrical networks.

Norton's Theorem states that any two-terminal source can be reduced to an equivalent current source in parallel with an equivalent resistance, not an equivalent shunt resistance. This theorem is a fundamental concept in electrical circuit analysis and provides a powerful tool for simplifying complex networks.

When applying Norton's Theorem, the original two-terminal network is replaced by a Norton current source (IN) connected in parallel with a Norton resistance (RN). The Norton current source represents the current that would flow through a short circuit connected across the terminals of the original network, while the Norton resistance represents the resistance seen by the short circuit.

The equivalent resistance is determined by removing all independent sources (voltage or current sources) from the original network and calculating the resistance across the terminals. The equivalent current source is then calculated by short-circuiting the terminals and determining the current flowing through the short circuit.

By utilizing the Norton equivalent circuit, complex networks can be simplified, allowing for easier analysis using standard circuit techniques. It is important to note that the equivalent resistance is in parallel, not shunt, with the Norton current source.

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About 1,360 watts per square meter

At Earth's average distance from the Sun (about 150 million kilometers), the average intensity of solar energy reaching the top of the atmosphere directly facing the Sun is about 1,360 watts per square meter, according to measurements made by the most recent NASA satellite missions.

Answer:

Explanation:

lll

Answer:

Unbalanced

Explanation:

Hussein is pushing 2 N harder.

Answer:

Solution

λ=v/n

Here, v=344 m s−1

n=22 MHz =22×106 Hz

λ=344/22×106=15.64×10−6m=15.64μm.

The wavelength of a 6.00 ×10² Hz sound wave in air at 20° C is 57.17 cm.

A sound is a vibration that travels as a mechanical wave across a medium. It can spread through a solid, a liquid, or a gas as the medium. Solids carry sound the quickest, liquids somewhat more slowly, and gases the least slowly.

According to physics, sound is described as a vibration that travels through a material like a gas, liquid, or solid as an audible wave of pressure.

Given parameters:

Frequency of sound wave = 6.00 ×10² Hz.

At 20° C, speed of sound in dry air = 343 m/s.

We have to find, the wavelength of the sound wave at 20° C = ?

For wave motion,

Speed = frequency × wavelength

Hence, the wavelength of the sound wave = speed / frequency

= 343 / 6.00 ×10² meter

= 0.5717 meter

= 57.17 cm.

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Answer: A skier’s most important piece of equipment is Ski boots.

Explanation: To find the answer, we need to know about the ski boots.

Thus, we can conclude that, a skier's most important equipment is Ski boots.

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Ski boots are a skier's most essential piece of gear.

We must understand the ski boots in order to determine the solution.

So, it stands to reason that ski boots are a skier's most essential piece of gear.

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A. The temperature of gas Y is 2 times the temperature of gas X.

The ideal gas equation is formulated as: PV = nRT.

In this equation we defined the parameters as follows;

number of moles of gas X = 1

volume of gas X = 1/4Y

Pressure of gas X = 2Y

temperature of X = ?

number of moles of gas Y = 2

volume of gas Y = 4X

Pressure of gas Y = ¹/₂X

temperature of Y = ?

R = PV/nT

PV/nT ( gas Y) =  PV/nT (gas X)

(¹/₂X . 4X)/(2 . TY) = (2Y . 1/4Y) / (1 . TX)

(X)/Ty = (Y/2Tx)

Ty(Y) = 2TX(X)

TY = 2TX

Thus, the temperature of gas Y is 2 times the temperature of gas X.

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Answer:

$10 a g

Explanation:

Answer:

As The mass of the beach ball is having lowest magnitude when compared with the other balls given so when apply the same magnitude of force to all the balls then the beach ball due to its lighternessand also its inertia of rest would not resist the force so much so when you apply the force to this ball it would starts to roll and covers the maximum diatance whwn compared with the other ball only in the condition when same magnitude of force applied.Thats this ball would do more work than the other ball.The mass also influences the velocity carried by the body and also the kinetic energy possessed by the body. More the force applied more the distance it would cover

Hope it helps

All electromagnetic waves are organized into a continuum called the electromagnetic spectrum according to their frequency and wavelength. The order of increasing frequency is as follows: radio waves, visible light, X-rays, and gamma rays.

The electromagnetic spectrum encompasses all wavelengths of electromagnetic waves that disperse energy and travel through space as waves.

It introduces the electromagnetic spectrum. What exactly is magnetic energy? Electromagnetic energy waves can be as short as gamma rays or as lengthy as radio broadcasts. The visible light spectrum has a very small portion that is visible to the human eye.

Electromagnets, which are transient magnets created when electricity passes through a coil of metal wire, are created. When electricity passes through a metal coil, the magnetic field is generated at the core or center of the coil.

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The phenomenon where, at very low temperatures, the resistivity of certain materials becomes zero, as evidenced by high-precision measurements, is known as Superconductivity. The correct answer is E.

Superconductivity is a phenomenon in which, below a certain temperature, the electrical resistance of certain materials approaches zero. These materials are referred to as superconductors.

Superconductors are also distinguished by their capacity to expel magnetic fields, which allows them to levitate when cooled below their critical temperature. Superconductivity occurs when certain materials are cooled to a temperature below a certain critical temperature. In the absence of an electric current, they are capable of conducting electricity indefinitely. As a result, they are completely free of electrical resistance. Because of the potential for energy conservation, superconductivity is a significant area of research in materials science.

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Answer:c

Explanation:

Answer: A decrease in acceleration causes the mass to increase.

Explanation:

Let's rewrite this as:

"For a constant force F, we can see that heavier objects accelerate less"

Then, as the mass increases, the acceleration of the object decreases.

This is known as an inverse relationship between acceleration and mass.

By second Newton's law we have that:

F = m*a

Force equals mass times acceleration.

So if the force is constant, we can write it as:

a = F/m.

In this equation, we can see that, if the acceleration decreases and F remains constant, then the mass m must increase (because it is in the denominator)

Then the correct option is:

A decrease in acceleration causes the mass to increase.

Answer:

There is a negative correlation between mass and acceleration.

Explanation:

Facundo is wrong. I got this wrong thanks to Facundo!

According to the visible spectrum, we can deduce the following:

Light can be defined as a form of electromagnetic waves (radiation) that do not require any medium for its propagation. Thus, light is generally referred to as a visual signal because it can be seen with the eyes.

Based on scientific records, the wavelengths of light that can be seen by humans with their eyes is between the range of 400 to 750 nanometers (nm).

According to the visible spectrum, we can deduce the following:

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Answer:

Explanation:

Force of friction acting on the crate = μ mg

= .4 x 100 x 9.8 = 392 N

Net force acting on the crate = 400 -392 N = 8 N .

acceleration = net force / mass

= 8 N / 100 kg

= .08 m /s²

velocity after 3 s.

v = u + at

= 0 + .08 x 3

= 0.24 m/s .

The pressure also doubled when the temperature did. answer P2=2atm.

According to Gay-Lussac Law, pressure and temperature have a direct relationship: P1/T1=P2/T2.

As long as the volume is kept constant, pressure and temperature will both rise or fall together.

The pressure would also double if the temperature did. The energy of the molecules would grow with increased temperature, and more collisions would occur, increasing pressure.

Double the temperature of a sample of gas that is at STP 1 atm and 273 K.

1atm/273K=P₂/546K\sP₂=2atm

The pressure increased by the same factor as the temperature.

Everything we eat, drink, or use contains energy. The fundamental body functions of the body are powered and governed by energy.

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(a) the energy in joules of an x-ray photon with wavelength 3.30 ✕ 10−10 m is 6.03 x 10^-16 J.

(b) Convert the energy to electron volts = 3.75 keV

(c) If more penetrating x-rays are desired, should the wavelength be increased or decreased?  decreased

(d) Should the frequency be increased or decreased?   increased

(a) The energy in joules of an x-ray photon with wavelength of 3.30 x 10^-10 m can be calculated using the Planck's equation:

Planck's equation is given by:

E = hf

Where, E = Energy of a photon in Joules h = Planck's constant f = Frequency of the electromagnetic radiation λ = Wavelength of the electromagnetic radiation

Since the question provides the wavelength, we need to calculate the frequency of the electromagnetic radiation.

h = 6.626 x 10^-34 Js, and λ = 3.30 x 10^-10 m

Thus, f = c/λ, where c is the speed of light and is given by c = 3.0 x 10^8 m/s.

Therefore, f = 3 x 10^8/3.30 x 10^-10 = 9.09 x 10^17 Hz

Now, we can calculate the energy of the x-ray photon using Planck's equation.

E = hf = 6.626 x 10^-34 J s × 9.09 × 10^17 Hz= 6.03 x 10^-16 J

Therefore, the energy of the x-ray photon is 6.03 x 10^-16 J.

(b) The energy can be converted to electron volts using the equation:

1 eV = 1.602 x 10^-19 J

Thus, 6.03 x 10^-16 J = 6.03 x 10^-16 / (1.602 x 10^-19) eV = 3753 eV ≈ 3.75 keV

Therefore, the energy of the x-ray photon is approximately 3.75 keV.

(c) If more penetrating x-rays are desired, the wavelength should be decreased. This is because the energy of the x-ray photon is inversely proportional to the wavelength. As the wavelength decreases, the energy of the x-ray photon increases. This means that shorter wavelength x-rays are more energetic and can penetrate more deeply into materials.

(d) The frequency should be increased. This is because the energy of the x-ray photon is directly proportional to the frequency. As the frequency increases, the energy of the x-ray photon increases. Therefore, x-rays with higher frequencies are more energetic and can penetrate more deeply into materials.

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The rocket's height when it was initially launched is 311 meters above sea level.

The rocket's height, in meters above sea level, is described by the equation h = -4.9t^2 + 286t + 311. To determine the rocket's height after 7 seconds, we substitute t = 7 into the equation and solve for h. Additionally, to find the height when the rocket was initially launched, we substitute t = 0 into the equation and calculate h.

To find the rocket's height after 7 seconds, we substitute t = 7 into the equation h = -4.9t^2 + 286t + 311:

h = -4.9(7)^2 + 286(7) + 311

h = -4.9(49) + 2002 + 311

h = -240.1 + 2002 + 311

h = 2072.9 meters

Therefore, the rocket's height after 7 seconds is 2072.9 meters above sea level.

To determine the height when the rocket was initially launched, we substitute t = 0 into the equation:

h = -4.9(0)^2 + 286(0) + 311

h = 0 + 0 + 311

h = 311 meters

Hence, the rocket's height when it was initially launched is 311 meters above sea level.

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Answer: 1. 12 MPH 2. 36m 3. 8 Hz

Explanation:

Answer:

1. 12 MPH 2. 36m 3. 8 Hz

Explanation:

For #1, I multiplied 6 by 2, For #2 I multiplied 6 by 6 and for #3 it's 8 x 2

The molar solubility of AgI is greater in pure water than in ammonia.

(a) The solubility product constant (Ksp) for AgI must be used to compute the molar solubility of AgI in pure water.

The expression for the equilibrium of AgI dissolving in water is:

AgI (s) ⇌ Ag⁺ (aq) + I⁻ (aq)

The Ksp expression for this equilibrium is:

Ksp = [Ag⁺][I⁻]

Given that the Ksp for AgI is 1.5 x 10^(-16) mol/L, we can assume that the molar solubility of AgI is "x" mol/L. Since AgI dissociates into one Ag⁺ ion and one I⁻ ion, the concentration of Ag⁺ and I⁻ ions will both be "x" mol/L.

As a result, we can enter the following values into the Ksp expression:

Ksp = x * x = x^2

From the given Ksp value, we can solve for the molar solubility "x" of AgI in pure water:

1.5 x 10^(-16) = x^2

Taking the square root of both sides yields the following result:

x = 1.2 x 10^(-8) mol/L

As a result, AgI's molar solubility in pure water is roughly 1.2 x 10(-8) mol/L.

(b) In 2.3 M NH3, the overall formation constant for Ag(NH3)2+ is 1.7 x 10^7 mol/L. The complexation reaction is represented as follows:

Ag⁺ (aq) + 2 NH3 (aq) ⇌ Ag(NH3)2⁺ (aq)

To calculate the molar solubility of AgI in 2.3 M NH3, we need to consider the complexation equilibrium. Let's assume the molar solubility of AgI in NH3 is "y" mol/L. In the presence of NH3, AgI dissociates into Ag⁺ ions, which form Ag(NH3)2⁺ complexes.

The concentration of Ag⁺ ions will be equal to "y" mol/L, and the concentration of Ag(NH3)2⁺ complexes will also be "y" mol/L.

Using the formation constant expression for Ag(NH3)2⁺:

Kf = [Ag(NH3)2⁺] / [Ag⁺]^2 [NH3]²

Given that the overall formation constant (Kf) is 1.7 x 10^7 mol/L, and the concentration of NH3 is 2.3 M, we can substitute these values into the formation constant expression:1.7 x 10^7 = y / (y)^2 (2.3)^2

Simplifying the equation:

1.7 x 10^7 = y / 5.29 y²

Rearranging the equation:

y^2 = y / (1.7 x 10^7)(5.29)

y^2 = 3.11 x 10^(-9)

Taking the square root of both sides yields the following result:

y = 5.58 x 10^(-5) mol/L

So, the molar solubility of AgI in 2.3 M NH3 is approximately 5.58 x 10^(-5) mol/L.

(c) From the calculations in parts (a) and (b), we can compare the solubilities of AgI in pure water and NH3. AgI's molar solubility in pure water is approximately 1.2 x 10^(-8) mol/L, while the molar solubility in 2.3 M NH3 is approximately 5.58 x 10^(-5) mol/L.

Comparing these values, we can see that the molar solubility of AgI is significantly greater in NH3 compared to pure water. The solubility of AgI increases in the presence of NH3 due to the formation of Ag(NH3)2⁺ complexes. These complexes enhance the solubility of AgI by keeping the Ag⁺ ions in solution and preventing their precipitation as AgI.

Therefore, the correct answer is: The molar solubility of AgI is greater in pure water than in ammonia.

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Answer:

than what is it

Explanation:

The efficiency of the engine is 83.4% assuming  that the

heat capacity is 21 J/K and the universal gas constant is 0.08206 L · atm/mol/K =8.314 J/mol/K.

Efficiency is described as the often measurable ability to avoid wasting materials, energy, efforts, money, and time while performing a task.

The efficiency of the engine is given by:

E = W/Q

where;

W = the work done in the four steps,

Q = the energy input

Since there at four steps in a cycle:

E = w1+ w2 +w3+ w4/ q1+ q2+q3+q4

We calculate that the work done in the first step (isothermal expansion)

n= 1 mole, T1 = 402 K, V2 = 41.2 L, V1 = 18.5 L

We also solve for Steps 2 and 4 are constant volume processes,

We also calculate  work done in the third step (isothermal expansion) is

where;

n = 1 mol, T3 = 273 K, V4 = 41.2 L, V3 = 18.5 L

We notice that Heat enters the system only during steps (1) and (4).

The internal energy of the gas increases in step 4 but no work is done, while the internal energy is constant change in step 1 but work is done by the gas.

Cv =21 J/K, T3 = 273 K, T4 = 402 K

We Solve  for efficiency, ɛ:

ɛ = 2676.01  +0 +0 + 1879.29/ 2676.01  +0 +0 + 2709 = 83.4%.

Therefore, the efficiency of the engine is 83.4%.

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The knob's moment of inertia is 0.25 Nm.s²

Moment of inertia is an object's resistance to changes in its rotational speed. It is the sum of the products of the object's mass and the square of its distance from the axis of rotation. Moment of inertia depends on the shape and mass distribution of the object, and thus different objects of the same mass can have different moments of inertia. In physics, the moment of inertia is an important property of any physical object, as it is a measure of the object's resistance to angular acceleration.

The moment of inertia of the knob can be calculated using the equation

I = T × (t/ω)

Where T = applied torque

t = time in seconds

ω = angular velocity in radians second⁻¹

Using the values given,

the moment of inertia of the knob is calculated to be:

I = (T × 30)/(15 × 2π)

= 0.25 Nm.s²

This indicates that the knob has a relatively low moment of inertia, meaning that it is able to rotate quickly in response to an applied torque.

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1,013.75 kg/m3 is what's found to be the mixture's density.

Per unit of length, area, or volume, there is a certain amount of something: as. : celebration of an object per unit volume.

A polystyrene cup can float in water whereas a ceramic cup will fall due to the difference in density between the two materials. Due to its lower density than water, wood typically floats on the surface of liquids. Generally speaking, rocks sink because they are denser than water.

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