The voltage required to stop an electron that was ejected from the cathode in a photoelectric effect experiment is 0.65 V (also called the stopping voltage).

What is the maximum kinetic energy of the ejected electron?

Note: 1 J = 6.242×1018 ev

Answer:

4 gamma closest thing to this V

Explanation:

Technetium. Tc is a very versatile radioisotope, and is the most commonly used radioisotope tracer in medicine.

Answer:

true

Explanation:

Answer:

true

Explanation:

The capacitance of a parallel plate capacitor can be calculated using the formula C = ε₀ * (A / d), where C is the capacitance, ε₀ is the permittivity of free space (approximately 8.85 × 10^(-12) F/m), A is the plate area, and d is the plate separation distance.

Given that d = 3 mm (which is equal to 0.003 m), L = 0.75 m, and W = 0.5 m, we can calculate the capacitance as follows:

C = ε₀ * (A / d) = (8.85 × 10^(-12) F/m) * (0.75 m * 0.5 m) / 0.003 m

C ≈ 1.477 × 10^(-9) F.

Therefore, the capacitance of the parallel plate air capacitor is approximately 1.477 nanofarads (nF).

b) To calculate the amount of charge the capacitor can hold when connected to a 12V battery, we can use the formula Q = C * V, where Q is the charge, C is the capacitance, and V is the voltage.

Given that the capacitance C is 1.477 × 10^(-9) F and the voltage V is 12V, we can calculate the charge Q as follows:

Q = C * V = (1.477 × 10^(-9) F) * 12V

Q ≈ 1.7724 × 10^(-8) C.

Therefore, the capacitor can hold approximately 1.7724 × 10^(-8) coulombs of charge when connected to a 12V battery.

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Answer:

She would travel 175.5 m in the same amount of time

Explanation:

Here is the complete question:

Seven bicyclist are racing. Each bicyclist rides for 9s. If a bicyclist, with initial velocity of zero, steadily gained speed until reaching a final velocity of 39m/s, how far would she travel during the race in the same amount of time)?

Explanation:

To determine how far she would travel in the same amount of time, that is the distance she would cover in the same amount of time

From the question,

The bicyclist has an initial velocity of zero

That is, u = 0 m/s

and a final velocity of 39 m/s

That is, v = 39 m/s

Each bicyclist rides for 9s,

She also traveled for the same amount of time

that is, t = 9s

To determine the distance,

From one of the equations of motion for linear motion

s = \(\frac{1}{2}\) t(u + v)

Then

s = \(\frac{1}{2}\) (9)(0+39)

s = 4.5 (39)

s = 175.5 m

Hence, she would travel 175.5 m in the same amount of time

Force = mass × acceleration

80 = M × 195

M = 80/195

M ≈ 0,4 kilograms

Answer:

F=ma

a=F/m

so kickball having less mass will result to more acceleration

Explanation: i said so andddd when i put this it said it was right hehe

Answer:

A

Explanation:

THE LIGHT SLOWS DOWN

When light from the Sun passes through any type of matter the light slows down.

The behavior of light from the Sun as it interacts with any matter depends on the matter and its properties.

Since it comes through a vacuum and enters our atmosphere which is a denser medium and has a definite refractive index, the light slows down.

This also happens when light falls on material such as glass, water, and other transparent and translucent media. When it emerges out of such medium to a rarer medium like air, it speeds up to its initial speed.

A portion of the sunlight is absorbed by almost all the matter present on earth that's why something heats up when exposed to sunlight. While a considerable portion of the sunlight is reflected by the matter.

But the question says what happens when it passes through any matter. The answer is:

It slows down while passing through the matter since any matter is optically denser than the vacuum.

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When working through these problems, think about the heat in terms of movement of the molecules of water.

Heat is transferred from the water to the surroundings --- water molecules slowing down.

Heat is transferred to the water from the surroundings --- water molecules heating up.

Heat transfer is the transfer of energy due to the difference of temperature between two different places. The main discussion in heat transfer is how the energy in heat can move places and the rate of transfer under certain conditions. Heat transfer includes the processes of inflow and outflow of heat. In industrial processes, heat transfer is used to achieve the required temperature in the industrial process and maintain the required temperature throughout the process.

Heat transfer from one object to another can occur by conduction, convection, and radiation. The determinant of heat transfer is the temperature difference. The direction of heat transfer starts from a medium with a high temperature to a medium with a lower temperature. Heat transfer can occur with a single process or multiple processes.

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Answer:

0.31429 Amps

Explanation:

Using the "Ohm's Law" we can look for the current (amps) with a formula of I = V/R

Given:

Resistance (Ohm) = 350

Volts = 110

Solution:

I = 110v/350r

I = 0.31429 amps

Answer: the third law

Explanation:

Answer:

The Ability to do work

Explanation:

energy is needed to do work because without energy no work can be done due to the fact that there is no energy

Newton's second law allows us to find the results for the value of the acceleration and the velocity of the bodies are:

Newton's second law says that force is directly proportional to the product of mass and acceleration

        F = m a

Where F is force, m is mass and acceleration.

As the body is close to the planet the force is the universal gravitational force

         \(F = -G \frac{Mm}{r^2}\)

Where F is the force, G the universal gravitational constant, M the mass of  the planet and m the mass of another body and r the distance between them

Let's substitute

          \(-G \frac{Mm}{r^2 } = m a\)

          \(a = - G M/r^2 = - g\)

We can see that the acceleration of small bodies (x or y) does not depend on their mass, the negative sign indicates that the force is directed to the center of the planet.

In a acceleration graph versus the time is the acceleration in constant for the two bodies and for their center of mass.

If we make a graph of velocity versus  time, it is given by

         v = v₀ - g t

This graph is a line of constant positive slope; the velocity values ​​for the two bodies are equal since the acceleration of gravity does not depend on the mass of the body.

In the attachment we can see a scheme of the graph of acceleration and velocity versus time

In conclusion using Newton's second law we can find the results for the value of the acceleration and the velocity of the bodies are:

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According to research: "They mix in mixture vary because the composition of the mixture is not fixed." A mixture is a material system made up of two or more different substances which are mixed but are not combined chemically. A mixture refers to the physical combination of two or more substances on which the identities are retained and are mixed in the form of solutions, suspensions, and colloids. The properties of a mixture can vary, because the composition of a mixture is not fixed. If amount one of substance in mixture is changed, the properties such system is also changed. Please mark as brainliest.

Hope this helps :)

If λ occurs as an eigenvalue of A with multiplicity r, then there are r linearly independent eigenvectors associated with λ, and the geometric multiplicity of λ is equal to r.

Let A be an n × n matrix. An eigenvalue of A is a scalar λ such that there is a nonzero vector x satisfying the equation Ax = λx. This equation can be rewritten as the linear system (A − λI)x = 0, where I is the identity matrix. Nontrivial solutions to this equation exist if and only if the matrix A − λI is singular, which means that its determinant is zero. Thus, the eigenvalues of A are the roots of the polynomial equation det(A − λI) = 0, which is called the characteristic equation of A. The algebraic multiplicity of an eigenvalue is the number of times it appears as a root of the characteristic equation. The geometric multiplicity of an eigenvalue is the dimension of the eigenspace associated with that eigenvalue. The eigenspace of an eigenvalue λ is the set of all eigenvectors of A associated with λ, along with the zero vector.

The rank of A is the dimension of its column space, which is the span of its column vectors. The rank of A is equal to the dimension of the row space of A, which is the span of its row vectors. The rank of A is also equal to the number of nonzero singular values of A. If the rank of A is r, then the dimension of the nullspace of A is n − r. If A has r linearly independent eigenvectors associated with a particular eigenvalue λ, then the geometric multiplicity of λ is r. If the algebraic multiplicity of λ is greater than its geometric multiplicity, then there are not enough eigenvectors to form a basis of the eigenspace associated with λ, which means that A is not diagonalizable. If the algebraic multiplicity of λ is equal to its geometric multiplicity, then A is diagonalizable. If λ occurs as an eigenvalue of A with multiplicity r, then there are r linearly independent eigenvectors associated with λ, and the geometric multiplicity of λ is equal to r.

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Answer:

\(\huge\boxed{\sf V = 90,000 \ v}\)

Explanation:

Charge = Q = 3 × 10⁻⁶ C

Distance = r = 0.3 m

k = 9 × 10⁹ Nm/C²

Electric Potential = V = ?

\(\displaystyle V = \frac{kQ}{r}\)

Put the given data in the above formula.

\(\displaystyle V=\frac{(9 \times 10^9)(3 \times 10^{-6})}{0.3} \\\\V=\frac{27 \times 10^3}{0.3} \\\\V= 90 \times 10^3\\\\V = 90,000 \ v\\\\\rule[225]{225}{2}\)

The intensity reflection coefficient (irc) is 1.

The ratio of the intensity of the reflected wave to the incident (transmitted) wave is known as the intensity reflection coefficient.

Intensity of incident (transmitted) sound wave = 50 W/cm².

As it  is totally reflected,  intensity of the reflected sound  wave = 50 W/cm².

Hence,  intensity reflection coefficient =

intensity of the reflected sound wave ÷ Intensity of incident sound wave

= 50  W/cm² /  50 W/cm².

= 1.

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The momentum of a moving object is given by the formula momentum = mass x velocity. In this case, the mass of the car is 70 kg and the velocity is 10 m/s. Therefore, the momentum of the car is:

momentum = 70 kg x 10 m/s
momentum = 700 kg.m/s

The momentum of the 70-kg car moving eastward at 10 m/s is 700 kg.m/s.

The correct answer is option B, 700 kg.m/s.

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The addition of vectors allows to find the vector that the equilibrium is

                F = (40.02 i ^ - 49.95 j ^) N

Parameters given

To find

The force is a vector magnitude so the sum of the force must be done using the methods to add vectors.

One of the easiest methods to perform the addition of vectors is the analytical method where each vector is decomposed in a Cartesian system and the components added using algebraic summation and then the resulting vector is constructed.

We decompose the vector

                 cos θ = \(\frac{A_x}{A}\)Ax / A

                 sin θ = \(\frac{A_y}{A}\)

                 Aₓ = A cos θ

                 \(A_y\)= A sin θ

                 Aₓ = 64 cos 128.7

                 \(A_y\) = 64 sin 128.7

                 Aₓ = -40.02 N

                 \(A_y\) = 49.95 N

To find the vector that allows equilibrium, we work each axis independently

X axis

                 Aₓ + Fₓ = 0

                 Fₓ = - Aₓ

                 Fₓ = 40.02 N

Y axis

                  \(A_y + F_y =0 \\F_y = - A_y\\F_y = - 49.95 N\)

We can write the resulting vector in two ways

1) F = (40.02 i ^ - 49.95 j ^) N

2) in the form of module and angle

Let's find the module with the Pythagoras' Theorem

              F =\(\sqrt{F_x} ^2 + F_y^2)\\F = \sqrt{40.02^2 + 49.95^2 }\)  

              F = 64 N

Angles

              tan θ = \(\frac{F_y}{F_x}\)

              θ = tan⁻¹  \(\frac{F_y}{F_x}\)

              θ = tan⁻¹ \(\frac{-49.95}{40.02}\)

              θ = -51.3º

This angle is measured clockwise from the positive side of the x-axis

In conclusion using the sum of vectors we can find the vector that allows the equilibrium is

                F = (40.02 i^  - 49.95 j^ ) N

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Based on the surface temperature of the Sun, which is approximately 6,000 K, most photons that leave its surface lie in the visible region of the electromagnetic spectrum.

The distribution of photons emitted by an object depends on its temperature. The Sun's surface temperature of 6,000 K corresponds to a peak emission in the visible region of the electromagnetic spectrum. According to Planck's law of black-body radiation, as the temperature of an object increases, the peak wavelength of its emitted photons shifts to shorter wavelengths.

The visible region of the electromagnetic spectrum encompasses the range of wavelengths that are detectable by the human eye, approximately 400 to 700 nanometers (nm). The Sun emits photons across the entire electromagnetic spectrum, but the majority of photons emitted from its surface lie within the visible range. This is why we perceive the Sun as a source of visible light.

While the Sun emits photons in other regions of the spectrum, such as ultraviolet, infrared, and even some X-rays and microwaves, the bulk of the photons leaving its surface fall within the visible range. This is why we primarily observe the Sun's light as visible light.

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Answer:

A great review helps your employees identify growth opportunities and potential areas of improvement without damaging employee-manager relations, but writing a ...

Explanation:

Answer:

c

Explanation:

An object's speed is the characteristic which is related to kinetic energy but not the potential energy. Thus, the correct option is C.

The kinetic energy of an object is the energy which it possesses due to the motion of the object. Kinetic energy is defined as the work which is needed to accelerate an object of a given mass from rest position to its stated velocity. Having gained this amount of energy during the acceleration of the object, the object maintains this kinetic energy unless its speed changes or it experiences acceleration.

Kinetic energy is directly proportional to the mass of the object and to the square of the velocity of the object, the expression is:

K.E. = 1/2 m × v²

where, KE = Kinetic energy,

m = mass of the object,

v = velocity of the object.

Therefore, the correct option is C.

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When they were falling, their acceleration is equal to the gravity acceleration.

When they started stopping, the time required to stop is 1.5 seconds, that is, 3 times less than the time accelerating.

Since the change in velocity when falling and when stopping is the same (same magnitude but opposite signal), the acceleration when stopping will be 3 times more than the acceleration when falling (because the change in velocity is the same and the time is 3 times less).

So we have:

Therefore the acceleration is 29.4 m/s².

23.38 ° to the positive x-axis

Explanation

Step 1

draw the vectors

Step 2

add the vectors, ( component to component)

so

a) get the components of V1

b) components of V2

c) add

so, the magnitude of the displacement is

finally, the direction

as we have a rigth triangle

let

opposite side= 12.9

adjacent side=23.8

Now, use the tan function to find the angles

so

therefore, the direction of the resultant is

23.38 ° to the positive x-axis

I hope this helps you

The separation between the principal maxima of the diffraction pattern is 596 nm.

The formula for the position of the principal maxima in a diffraction grating is given by d sin(θ) = mλ, where d is the period of the grating, θ is the angle of diffraction, m is the order of the maxima, and λ is the wavelength of light.

In this case, the light is normally incident on the diffraction grating, which means the angle of diffraction is zero (θ = 0). Therefore, the formula simplifies to d sin(0) = mλ.

Since sin(0) = 0, we have d * 0 = mλ. Since mλ is zero for m = 0, we consider the first-order principal maximum, m = 1.

Plugging in the values, we have (3 μm) * 0 = (1) * (596 nm).

Simplifying the equation, we find Δx = λ = 596 nm.

Therefore, the separation between the principal maxima of the diffraction pattern is 596 nm.

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The answer is D. A more reactive metal replaces a less reactive metal in a chemical reaction.

Answer:

The net force is zero because both volleyball players are hitting the ball with same force.

Explanation:

The total pressure experienced by the diver at the given depth is 201,880 Pa.

The given parameters:

The total pressure experienced by the diver at the given depth is calculated as follows;

\(P = \rho g h\)

where;

ρ is the density of the liquid (kg/m³)

g is acceleration due to gravity

1.03 g/cm³ = 1,030, kg/m³

P = (1030) x (9.8) x (20)

P = 201,880 N/m²

Thus, the total pressure experienced by the diver at the given depth is 201,880 Pa.

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1.Beaker A has less thermal energy than Beaker B

2.The water molecules in both beakers A and B have the same average kinetic energy

The temperature of the water in each of two beakers is same (50°C).

Beaker One contains (\(m_{1}\)) 100 g of water

Beaker Two contains (\(m_{2}\)) 250 g of water

Heat gained and lose by the object is depends on mass, change in temperature and specific heat.

Both beakers are made with same materials so their Specific heats and temperature are same .

Beaker B has more mass then Beaker A  so Beaker A has less thermal energy than Beaker B.

2.The water molecules in both beakers A and B have the same average kinetic energy.

The temperature of an object is a measure of its internal energy. Thermal Energy is a form of Kinetic Energy because it is related to the Molecular Velocity.

When Temperature increases the velocity of the molecules ( increases or decreases) and the Kinetic Energy (increases or decreases) as Temperature decreases the velocity of the molecules ( increases or decreases) and the Kinetic Energy (increases or decreases).

so Kinetic Energy Depends on Velocity and Velocity depends on   the Temperature in this problem Temperature are same so The water molecules in both beakers A and B have the same average kinetic energy.

It takes a lot of heat to increase the temperature of liquid water because some of the heat must be used to break hydrogen bonds between the molecules.

In other words, water has a high specific heat capacity, which is defined as the amount of heat needed to raise the temperature of one gram of a substance by one degree Celsius. The amount of heat needed to raise the temperature of 1 g water by 1 °C is has its own name, the calorie.

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In astronomy, the term bipolar refers to outflows that are ejected from a central source in two opposite directions.

These outflows are characterized by a symmetrical structure with two lobes, hence the term "bipolar." They are commonly observed in various astrophysical objects, such as young stars, planetary nebulae, and active galactic nuclei.

Bipolar outflows play a crucial role in the evolution of these objects by carrying away mass and energy. They are believed to be driven by powerful processes, such as accretion onto a central object or the presence of a binary system. The study of bipolar outflows provides valuable insights into the underlying physical mechanisms and helps astronomers better understand the formation and evolution of celestial bodies.

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