if the electric field has a magnitude of 460 n/c and the magnetic field has a magnitude of 0.18 t , what speed must the particles have to pass through the selector undeflected?

Answer:

The phenomenon known as the photoelectric effect occurs when the light of a specific frequency strikes a substance. The material's surface then experiences an electron emission.

Newtonian physics could not account for this event.

The energy in Newtonian physics is not discrete. The energy in quantum physics is discrete. This is the major reason why Newtonian physics could not account for the photoelectric effect.

Photons make up light. The photon is an energy particle. Quanta is another name for it. The photons' energy is quantized.

When a photon collides with a metal surface, an electron within the metal absorbs the energy of the photon so that it can eject from the surface.

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Sunlight photons are absorbed and infrared photons are reflected.

Edmentum

The vertical and horizontal distance of a projectile will be equal if the angle of projection is 45 degrees.

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Answer:

Explanation:

The weight of a body is defined as the force with which it is attracted towards the centre of a planet. A spring balance measures it. It's unit is Newton ( N ) in the SI system and dyne in the CGS system.

Hope I helped!

Best regards!

Weight is force.

The CGS unit of force is the dyne.

The SI unit of force is the Newton.

Answer:

hmmmmmmmmmmmmmmm

yes.

Answer:

The net force is positive

Explanation:

This would mean that altogether, the force would cause the object to always be going the same way, and if it is not gaining or losing speed, we can say the force has not changed and that the object has reached terminal velocity. It is not correct to say that the positive is greater than the negative as friction also causes some type of effect and it is neither positive nor negative

The work done on the box due to the force in pushing it to a height of 3 m is 76.44 J.

We can calculate the work done on a body using the formula W = Fs, where F is the force applied, and s is the displacement produced in the direction of the force.

Here, the force acting on the box is parallel to the ramp, so it does work only in moving the box up the ramp. Since the ramp is frictionless, no work is done against the force of friction. Therefore, the work done on the box by the force is equal to the increase in its gravitational potential energy.

Mathematically, we can represent it as

W = ΔU = mgh

Here, ΔU is the change in gravitational potential energy, m is the mass of the body, g is the acceleration due to gravity, and h is the height to which the body is raised.

Putting the given values in the above equation, we get

W = ΔU = mgh = 2.60 × 9.8 × (3.00 - 0) = 76.44 J

Therefore, the work done on the box by the force as it is pushed up the 5.00-m ramp to a height of 3.00 m is 76.44 J.

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Answer:

50 kmph

Explanation:

300 / 6 = 50

Answer: The property that will best provide evidence that the samples are solid includes:

--> if the substance has a definite shape,

-->if the substance has a definite volume

--> if it's tightly packed.

Explanation:

According to the kinetic theory of matter, every substance consist of very large number of very small particles called molecules. These molecules, which are made up of atoms that are the smallest particles of a substance that can exist in a free state.

Matter can exist in the following states:

--> Solid state

--> liquid state or

--> Gaseous state.

The general property of a substance that is in gaseous state includes:

--> Definite shape: A substance can be grouped as a solid if it's shape is fixed that is, it doesn't depend on the shape of other materials.

--> Definite volume: A substance can be grouped as a solid if it occupies its own shape. This is due to the force of cohesion among its molecules.

--> Tightly packed: A substance can be grouped as solid if the molecular movements of the particles are negligible.

From the samples under observation by Juan and kym, if the sample that possesses the above described qualities, it is a solid rather than liquid or gas.

Two negatively charged objects are 2 meters apart. the student adds electrons through conduction to one of the objects, then the force of repulsion between the two objects will decrease.

The reason for this is that the negatively charged electrons on the first object will repel the negatively charged electrons on the second object, creating a force of repulsion between them. Adding electrons to one of the objects will increase the number of electrons on that object, resulting in a stronger negative charge. This increase in the negative charge on one object will make it more difficult for the electrons on the other object to push against it, reducing the force of repulsion between the two objects. It's important to note that the amount of decrease in the force of repulsion will depend on the amount of electrons added and the initial charge of the objects. Also, If the distance between the two objects does not change and the charges on the objects are not affected by other factors, the electrostatic force of repulsion between the objects will be inversely proportional to the square of the distance between them.

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Question - Two negatively charged objects are 2 meters apart. The student adds electrons through conduction to one of the objects. What is the force of repulsion between the two objects?

Answer: H

Explanation:

When beavers dam a stream they slow the movement of water. Behind the beaver dam, a pond of still water is formed. This pond is then colonized by animals and plants that typically live in lakes rather than streams.

When the net force exerted on each car is identical. after 10 seconds, the amount of momentum is same for all cars.

The change in momentum is equal to the product of impact force applied while colliding and time for that impact.

F. t = m (Vf -Vi)

where, Vf is the final velocity and Vi is the initial velocity.

For car X, Fx x t = Mx Vx

For car Y, Fy x t = My Vy

For car Z, Fz x t = Mz Vz

The force applied is same for all and the the time is also same equal to 10 seconds. The impulse is same for all the cars.

Thus, the three cars have same momentum.

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a) D2022 = $1.9975, D2023 = $2.27715, D2024 = $2.60554, D2025 = $2.98868, D2026 = $3.43243

b) Po = $13.63

c) Dividend yield = 13.85%, Capital gains yield = 74.52%, Expected total return = 88.37%. Dividend yield = 17.89%, Capital gains yield = -23.29%, Expected total return = -5.40%.

a) Dividend is the distribution of earnings to shareholders. Expected dividend for each year can be calculated as follows:

D2022 = D0 (1 + g) = $1.75 (1 + 0.14) = $1.9975

D2023 = D2022 (1 + g) = $1.9975 (1 + 0.14) = $2.27715

D2024 = D2023 (1 + g) = $2.27715 (1 + 0.14) = $2.6055415

D2025 = D2024 (1 + g) = $2.6055415 (1 + 0.14) = $2.98868161

D2026 = D2025 (1 + g) = $2.98868161 (1 + 0.14) = $3.432429195

b) The present value of dividends expected in 2022, 2023, 2024, 2025 and 2026 can be calculated using the following formula:

PVD = D / (1 + r)t

where

PVD = present value of dividends expected

D = dividend expected in a future year

t = number of years from now

r = required rate of return

PVD2022 = $1.9975 / (1 + 0.12)¹ = $1.77700934579

PVD2023 = $2.27715 / (1 + 0.12)² = $1.88843867485

PVD2024 = $2.6055415 / (1 + 0.12)³ = $1.99719364693

PVD2025 = $2.98868161 / (1 + 0.12)⁴ = $2.10928913223

PVD2026 = ($3.432429195 + ($3.432429195 * 1.05)) / (1 + 0.12)⁵ = $2.25661605368

The present value of the stock price that should exist at the end of 2026 can be calculated using the constant growth equation:

Po = D1 / (r - g)

where

Po = price of stock today

D1 = dividend expected at the end of 2026r = required rate of return

g = expected growth rate

Po = $3.60484320761

Total present value of all dividends expected plus the present value of the stock price at the end of 2026 can be calculated using the formula:

Total PV = PVD2022 + PVD2023 + PVD2024 + PVD2025 + PVD2026 + PoTotal PV = $1.77700934579 + $1.88843867485 + $1.99719364693 + $2.10928913223 + $2.25661605368 + $3.60484320761 = $13.6333900619

The value of the stock today, Po, is $13.63.

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Answer:

What I know, want to know, and have learned

Explanation:

I know

1. You have to have a golf ball

2. You have to have a golf club

3. Its nice to have a golf cart

Want to know:

1. Where can I play

2. How to play

3. Is it a common sport

Have learned:

1. Golf is hard

2. Top golf is a nice place to golf

3. The goal is to make the ball into the hole

Take east to be the positive direction. Then the resultant force from adding F₁ and F₂ is

F₁ + F₂ = (-45 N) + 63 N = 18 N

which is positive, so it's directed east.

To this we add a third force F₃ such that the resultant is 12 N pointing west, making it negative, so that

18 N + F₃ = -12 N

F₃ = -30 N

So F₃ has a magnitude of 30 N and points west.

Answer:

Vectors are often represented by arrows. When using an arrow to represent velocity, the length of the arrow stands for speed, and the way the arrow points indicates the direction.

Answer:

A pardon

Explanation:

Hope this helps

Answer:

that would probably be a A.Pardon

The number of people who watch the State of the Union speech varies annually but usually amounts to millions. The State of the Union speech is an annual address delivered by the President of the United States to a joint session of the United States Congress.

Given that this speech is a major national event, it is expected that a significant number of people tune in to watch it. The exact number of people who watch the State of the Union speech varies each year depending on various factors such as the popularity of the president, the issues discussed, and the media coverage.

However, according to Nielsen, a media research firm, approximately 37.2 million people watched the 2019 State of the Union speech delivered by President Donald Trump. This was a decline from the 45.6 million viewers who watched the speech in 2018. Nonetheless, the viewership was still high, indicating that the speech remains an important event in the US political calendar.

In conclusion, the number of people who watch the State of the Union speech varies annually but usually amounts to millions.

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To calculate the photon flux, we need to use the formula:
Photon flux = intensity / (energy per photon x speed of light x wavelength)
The energy per photon can be calculated using the formula:
Energy per photon = Planck's constant x speed of light / wavelength

Substituting the given values, we get:
Energy per photon = (6.626 x 10^-34 J s x 3 x 10^8 m/s) / (500 x 10^-9 m) = 3.98 x 10^-19 J
Substituting this value and the given intensity and wavelength into the photon flux formula, we get:
Photon flux = 2000 W/m^2 / (3.98 x 10^-19 J x 3 x 10^8 m/s x 500 x 10^-9 m) = 2.51 x 10^15 photons/m^2.s
Therefore, the photon flux is approximately 5 x 10^17, which is option A.
The intensity of a uniform light beam with a wavelength of 500 nm is 2000 W/m². To find the photon flux (in number/m²·s), we first need to determine the energy of a single photon. We can do this using the equation: E = (hc)/λ
where E is the energy of a photon, h is Planck's constant (6.63 x 10^-34 Js), c is the speed of light (3 x 10^8 m/s), and λ is the wavelength of light (500 nm, or 5 x 10^-7 m).
E = (6.63 x 10^-34 Js)(3 x 10^8 m/s) / (5 x 10^-7 m)
E ≈ 3.98 x 10^-19 J
Now that we have the energy of a single photon, we can find the photon flux (Φ) using the equation: Φ = I / E
where I is the intensity of the light beam (2000 W/m²) and E is the energy of a single photon. Φ = (2000 W/m²) / (3.98 x 10^-19 J)
Φ ≈ 5 x 10^21 photons/m²·s
Therefore, the photon flux is approximately 5 x 10^21 photons/m²·s, which corresponds to option C.

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Let's call the length of the race track as "x".

To solve for "x", we can use the formula:

\(\implies\text{ Time} = \dfrac{\text{ Distance}}{\text{ Speed}}\)

Since the race ends in a tie, we know that Jan and Mary both took the same amount of time to run the race. Let's call this time "t".

\(\implies \text{ Time} = \dfrac{\text{ Distance}}{\text{ Speed}}\)

\(\implies t = \dfrac{x - 25}{7.5}\)

\(\implies\text{ Time} = \dfrac{\text{ Distance}}{\text{ Speed}}\)

\(\implies t = \dfrac{x}{8.0}\)

Since both expressions represent the same time, we can set them equal to each other and solve for "x":

\(\implies \dfrac{x - 25}{7.5} = \dfrac{x}{8.0}\)

Multiplying both sides by 60 (the least common multiple of 7.5 and 8.0) to get rid of the decimals:

\(\implies 8(x - 25) = 7.5x\)

\(\implies 8x - 200 = 7.5x\)

\(\implies 0.5x = 200\)

\(\implies x = 400\)

\(\therefore\) The length of the race track is 400 meters.

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1. Charge (Q): The charge stored in a parallel-plate capacitor is directly proportional to the potential difference (V) between the plates and the capacitance (C) of the capacitor, represented by the equation

Q = CV.

2. Electric field (E): The electric field between the plates is proportional to the charge (Q) and inversely proportional to the area (A) of the plates, given by the equation E = Q/Aε₀, where ε₀ is the vacuum permittivity constant.

3. Potential difference (V): The potential difference between the plates is proportional to the electric field (E) and the separation of the plates (d), represented by the equation V = Ed.

Now, let's combine these equations to derive the capacitance equation.

1: Solve the potential difference equation for the electric field:
E = V/d

2: Substitute the electric field equation from step 1 into the equation for charge:
Q = CV = (Aε₀E)d

3: Rearrange the equation to isolate capacitance:
C = Q/(Vd) = Q/(Aε₀E)d

4: Substitute the electric field equation (E = Q/Aε₀) back into the capacitance equation:
C = Q/(Aε₀(Q/Aε₀)d)

5: Simplify the equation to obtain the capacitance formula:
C = ε₀A/d

In conclusion, the capacitance of a parallel-plate capacitor depends on the area (A) and separation (d) of the plates, as represented by the equation C = ε₀A/d. The larger the area or the smaller the separation between the plates, the higher the capacitance.

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Answer:

you do a chemical reaction thing

Explanation:

get baking soda and mix it with b

vinegar and then try other liquids on baking soda and see the reaction, make sure to document and take pictures

The distance above the reflector for the radio-detecting equipment, we can use the formula for the focal length of a spherical mirror:

To obtain clear radio images using the reflector of the radio telescope at Arecibo Observatory, the radio-detecting equipment must be placed at a distance of half the radius of curvature above the reflector. This means that the equipment must be placed at a height of:
height = 0.5 x radius of curvature
height = 0.5 x 265.0 m
height = 132.5 m
where f is the focal length, and R is the radius of curvature. Given the radius of curvature (R) is 265.0 m for the Arecibo Observatory's radio telescope, we can find the focal length:
f = 265.0 m / 2
f = 132.5 m t

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Answer:    Answer: The object moves forward at 5 m/s, stops, and then changes velocity.

Explanation:

With the information given in the question we can graph the points (image attached).

As we can observe, in the first segment of the graph the velocity is increasing linearly (at a constant rate) and is 5 m/s, then in the second segment we can see the position of the object remains the same from second 2 to second 4, which means the object is stopped.

Finally, in the third and last segment, we can observe a change in velocity (at a negative constant rate, because is decreasing), which is decreasing until the object stops.

Explanation:

To maximize the objective function p with the given constraints, we use linear programming by identifying the feasible region.

Finding corner points, evaluating p at each point, and selecting the point with the maximum value of p.In this case, the given constraints are x = 0, y = 0, 2x + 2y = 4, and x + y = 8. To maximize the objective function p, we follow these steps:Identify the feasible region by graphing the constraints on a coordinate plane.

The corner points, which represent the vertices of the feasible region.Evaluate the objective function p at each corner point.Select the point with the maximum value of p as the optimal solution that maximizes p while satisfying the given constraints.

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Most cells in an organism, such as leaf cells in a plant, are somatic cells. Somatic cells contain two sets of chromosomes, one inherited from each parent, and are diploid. In humans, for example, somatic cells contain 46 chromosomes, arranged in 23 pairs.

On the other hand, reproductive cells, such as sperm and egg cells, are sex cells or gametes. Gametes are haploid, which means they contain only one set of chromosomes, half the number found in somatic cells. In humans, gametes contain 23 chromosomes, which are not arranged in pairs.

The purpose of gametes is to combine during fertilization to produce a zygote, which contains a complete set of chromosomes (i.e., diploid). This ensures that the offspring will have genetic diversity and not be identical to either parent.

The process of reducing the number of chromosomes in gametes from diploid to haploid is called meiosis. Meiosis is a type of cell division that occurs only in gamete cells, and results in the production of four haploid daughter cells, each containing a unique combination of chromosomes.

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Think of a cube that is 1 cm by 1 cm by 1 cm. The volume of this cube is 1*1*1 = 1 cubic cm = cm^3. This is equivalent to 1 mL by definition

So the object's volume of 5 mL is the same as 5 cm^3.

To get the density of an object, we divide the mass over volume

density = (mass)/(volume)

density = (20 kg)/(5 mL)

density = (20 kg)/(5 cm^3)

density = (20/5) (kg/cm^3)

density = 4 kg/cm^3

The density is 4 kilograms per cubic centimeter. In other words, each cubic centimeter of volume has about 4 kilograms of material.

Answer:

2(3t-4)+3t=4t-2

This deals with linear equations with one unknowns

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Answer:

300 Newtons

Explanation:

Weight is the force of attraction between two bodies, one usually larger (like a planet), and one smaller (like a person). Force can be calculated using the formula: Force = mass × acceleration.

The mass here is 12kg, the acceleration, which in this case, is the acceleration due to gravity is 25m/s/s, by plugging in our values, we have

Force = 12 × 25 = 300 Newtons or 300 N for short.