an annulus with inner radius and outer radius lies in the plane. there is a constant electric field with magnitude , that makes an angle with the horizontal. what is the electric flux through the annulus?

Answer:A heavy box has a mass of 30 kg. The box experiences a net force of 90 N when pushed along the floor. Use

this information to answer questions 17 and 18

Explanation:

17. What is the acceleration of the box?

a. 3 m/s 2 b. 2 m/s 2 c. 0.3 m/s 2 d. 0.5 m/s 2

18. If the mass of the box was changed to one third as much, and the force was held constant, how would

the acceleration change?

a. It would be one third as much

b. It would be 3 times as much

c. It would be one half as much

d. It would be 2 times as much

The wave carries energy and momentum, and can interact with matter, causing phenomena such as absorption, reflection, refraction, and diffraction. Understanding the behavior of electromagnetic waves is crucial for many fields of science and technology, such as optics, electronics, telecommunications, and energy.

The proposed form for the electric and magnetic fields of the electromagnetic wave traveling at speed v in the x direction in a vacuum is given by E(x,t) = Emax sin(kx - wt) and B(x,t) = Bmax sin(kx - wt), where Emax and Bmax are the maximum values of the electric and magnetic fields, respectively, k is the wave number, w is the angular frequency, and t is time.
This form satisfies Maxwell's equations for the wave in vacuum, which state that the curl of the electric field is equal to the negative time rate of change of the magnetic field, and the curl of the magnetic field is equal to the time rate of change of the electric field.
The wave propagates through the vacuum as a disturbance in the electromagnetic field, consisting of oscillating electric and magnetic fields that are perpendicular to each other and to the direction of propagation. The magnetic field is created by the motion of charged particles, such as electrons, while the electric field is created by the changing magnetic field.
In vacuum, the wave travels at a constant speed of v = c, the speed of light, and is unaffected by the presence of charges or currents. The wave can be polarized in different ways, such as linear, circular, or elliptical polarization, depending on the orientation and amplitude of the electric and magnetic fields.

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Explanation: (I think)

Plug your values into the momentum equation.

So m1= 63kg

m2 = 10 kg

V1 = 12 m/s

And then plug in your values and solve for your unknown (v2)

The parameter d in Eq (4.4) represents the mean distance that neutrons travel before being absorbed in the medium.

The equation you provided, Eq (4.4), is the exponential decay equation, which describes the intensity (I) of a quantity as a function of distance (x) in a medium. The equation is given by:

I = I₀ * e^(-x/d) Where: I is the intensity of the quantity at distance x

I₀ is the initial intensity (at x = 0)

e is the base of the natural logarithm (approximately 2.71828)

x is the distance traveled

d is the mean free path or mean distance traveled before absorption

To show that d represents the mean distance neutrons travel before being absorbed, we need to make the connection between the equation and the behavior of neutrons in a medium. In the context of neutron absorption, the intensity of neutrons decreases exponentially as they travel through a medium due to absorption events. Each absorption event decreases the number of neutrons, leading to a reduction in intensity. Now, let's consider the equation I = I₀ * e^(-x/d) in the context of neutron absorption. In this case, we can interpret I as the intensity of the neutron flux at distance x, and I₀ as the initial intensity of the neutron flux at x = 0. The term e^(-x/d) represents the fraction of neutrons remaining after traveling a distance x in the medium. It is essentially a probability factor, indicating the likelihood of a neutron being absorbed within the distance x. The parameter d, in this case, represents the mean free path or mean distance traveled before absorption. It signifies the average distance a neutron can travel in the medium before it is absorbed. As x approaches d, the fraction e^(-x/d) becomes close to 1/e, indicating that approximately 63.2% of the neutrons remain.

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Answer:

-48,800,000 or 71,200,000

Explanation:

subtraction or addition :D

I hope I helpped (ㆁωㆁ)

Answer:

Hand feels pain. Table makes a noise

Explanation:

(A) It takes about two-thirds as much energy to boil the water as to melt the ice.

Answer:

b

Explanation:

The frequency heard by the passenger on the second train is approximately 319.75 Hz.

To calculate the frequency heard by a passenger on a train moving in the opposite direction to another train, we can use the concept of the Doppler effect. The Doppler effect describes the change in frequency of a wave (sound, in this case) when the source of the wave and the observer are in relative motion.

Let's break down the given information

Speed of sound in still air: v = 344 m/s

Speed of the first train: v₁ = 30.0 m/s

Frequency of the note emitted by the train whistle: f₁ = 277 Hz

Speed of the second train (moving in the opposite direction to the first): v₂ = 18.0 m/s

The formula for calculating the observed frequency (f₂) due to the Doppler effect when the observer and source are moving towards each other is

f₂ = (v + v₂) / (v - v₁) × f₁

where:

f₂ is the observed frequency

v is the speed of sound in air

v₂ is the speed of the observer (passenger on the second train)

v₁ is the speed of the source (first train)

f₁ is the frequency of the source (note emitted by the train whistle)

Plugging in the values into the formula, we can calculate the observed frequency:

f₂ = (v + v₂) / (v - v₁) × f₁

= (344 + 18.0) / (344 - 30.0) × 277

Simplifying this equation gives

f₂ = 362 / 314 × 277

Calculating the numerical value

f₂ ≈ 319.75 Hz

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-- The given question is incomplete, the complete question is

"A railroad train is travelling at 30.0 m/s in still air. The frequency of the note emitted by the train whistle is 277 Hz . The speed of sound is 344 m/s. What frequency is heard by a passenger on a train moving in the opposite direction to the first at 18.0 m/s and approaching the first?"

Answer:

it is going down down down down the hill it goes so the roller coaster will then be down to a 0 m

Answer:

An object in motion will remain in motion until it experiences an unbalanced force.

Explanation:

This is part of Newton's first law. An unbalanced force is there to offset the object in motion, such as a ball versus a wall. A wall will stop the ball from moving.

Respirators are personal protective equipment (PPE) devices designed to protect individuals from inhaling harmful substances in the air. A respirator equipped with a chemical cartridge or canister is designed to filter chemical gases out of the air as you breathe.

Respirators are personal protective equipment (PPE) devices designed to protect individuals from inhaling harmful substances in the air. Different types of respirators are available depending on the specific hazards present. For filtering chemical gases, a respirator equipped with a chemical cartridge or canister is typically used.

Chemical cartridges or canisters contain activated carbon or other specialized filtering materials that are designed to adsorb or chemically react with specific gases or vapors. As air passes through the respirator, the chemical cartridge or canister captures and removes the harmful chemical contaminants, ensuring that only clean air is inhaled.

It is important to note that the effectiveness of a respirator in filtering chemical gases depends on several factors, including the type of cartridge or canister used, the concentration of the chemical, and the fit of the respirator on the wearer's face. Therefore, it is crucial to select the appropriate respirator with the right cartridge or canister for the specific chemicals present in the environment to ensure adequate protection against chemical gases.

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Answer:7.5j

Explanation:

P=w/s

Answer: the force when the catapult swings has the same force as it does when coming down

Explanation:

for every reaction there is an equal opposite reaction

A simple pendulum makes 130 complete oscillations in 3.10 min at a location where g = 9.80 m/s²: (a) The period of the pendulum is approximately 1.43 seconds (s). (b) The length of the pendulum is approximately 0.80 meters (m).

(a) The period of a simple pendulum is the time taken for one complete oscillation. We can calculate the period (T) using the formula:

T = (time taken for oscillations) / (number of oscillations)

Given that the pendulum makes 130 complete oscillations in 3.10 minutes, we need to convert the time to seconds:

T = (3.10 min × 60 s/min) / 130

T ≈ 1.43 s

Therefore, the period of the pendulum is approximately 1.43 seconds.

(b) The length of a simple pendulum can be determined using the formula:

L = (g × T²) / (4π²)

Substituting the value of the period (T) calculated in part (a) and the acceleration due to gravity (g = 9.80 m/s²), we can find the length (L):

L = (9.80 m/s² × (1.43 s)²) / (4π²)

L ≈ 0.80 m

Thus, the length of the pendulum is approximately 0.80 meters.

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Answer:

1. heating

2. entertainment

3. cooling

4.educational purpose

5.comfort

Answer:

383.2

Explanation:

W=m×g(9.8)×(change in height)

=3×9.8× (45-32)

=3×9.8×13

=383.2

Answer:

The fruit came first

Explanation:

Answer: Heyaa! ~

State of the problem is that your friend routinely misses the school bus.

Explanation:

What are the causes for his missing the school bus:

Hopefully this helps you!

-Matthew ^^

The electric force between the droplets, and the horizontal acceleration this force produce on the droplets are: 5.84*10^-7 N and 0.32 m/s² respectively

In physics the electric force is the force that attracts or repels two charges (q) separated at a distance called (r), this is expressed in the international system of units in Newton.

To solve this exercise the electric force formulas and the procedures we will use are:

Where:

Given Info:

Applying the electric force formula we have:

F = (k * q1 * q2)/r²

F = [(9 *10^9 N*m²/C² * (2.9*10^-11 C) * (2.9*10^-11 C)]/ (3.6*10^-3 m)²

F = 7.569*10^-12 N*m² /1.296*10^-5 m²

F = 5.84*10^-7 N

Applying the force formula and clearing the acceleration, we get:

a= F/m

a= 5.84*10^-7 N/ 1.8*10^-6 kg

a= 0.32 m/s²

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Answer:

you are making an observation that uses numbers.

Explanation:

Answer:

The reaction force is the water pushing the swimmer in the rightward direction.

Hope you could get an idea from here.

Doubt clarification - use comment section.

The velocity of the ball is 16.9 m/s at 0.53 seconds. The given velocity of 17 m/s is the moving/change in velocity and 0.53 seconds is the given time.

to find the velocity let's 1st find out the acceleration using the formula

a = Change in velocity/time

a = 32.07 m/s²

Velocity = acceleration X Time

Velociy = 32.07 X 0.53

= 16.99 m/s

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Answer:

the time period is 14.00

Explanation:

it.answer help you

The square root of the tension in the string has a direct relationship with the transverse wave's speed. The speed of the wave will grow by 9, or by three times, if the tension of the rope is increased by a factor of 9.

The speed of the wave is doubled since it is related to the square root of the tension.

When we view a thing hanging from a cable, rope, or thread, we are observing tension forces. When an item is dragged by a rope, wire, or cable, tension forces are defined as the forces that are transmitted.

As a result, the stretched wire's frequency is inversely related to length; as length grows, the frequency decreases.

With tension, the wave's velocity along the string quickens. To be accurate, the tension must be increased four times for the velocity to rise by the same amount.

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The speed of the man and the chair after the book is thrown is 0.2 m/s.

The given parameters:

The total mass of the man and the book is calculated as follows;

m₂ = 70 kg + 9.2 kg

m₂ = 79.2 kg

The speed of the man and the chair after the book is thrown is determined by applying the principle of conservation of linear momentum;

\(m_1 u_1 = m_2u_2\\\\u_2 = \frac{m_1u_1}{m_2} \\\\u_2 = \frac{2.1 \times 7.2}{79.2} \\\\u_2 = 0.2 \ m/s\)

Thus, the speed of the man and the chair after the book is thrown is 0.2 m/s.

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We can use the relativistic Doppler effect formula, which relates the observed frequency of light to its emitted frequency and the relative velocity between the emitter and observer:

\(f_{observed} = f_{emitted} * sqrt((1 + v/c) / (1 - v/c))\)

where:

f_observed is the observed frequency

f_emitted is the emitted frequency

v is the relative velocity between the emitter and observer

c is the speed of light

For region A,

the emitter is moving tangentially at a speed of \(vT = 0.43 *10^6\) m/s relative to the galactic center, which is receding from Earth at a speed of \(uG = 1.63 * 10^6 m/s.\)

Therefore, the relative velocity between the emitter and observer (Earth) is:

\(v = vT + uG = 2.06 *10^6 m/s\)

Plugging this into the relativistic Doppler effect formula, along with the emitted frequency of\(6.200 * 10^14 Hz\), we get:

\(f_{observed_A} = 6.200 * 10^14 Hz * sqrt((1 + 2.06 *10^6 m/s / 3 * 10^8 m/s) / (1 - 2.06 * 10^6 m/s / 3 *10^8 m/s))\)

\(= 6.225 *10^{14} Hz\)

Therefore, the observed frequency of light from region A is \(6.225 *10^{14} Hz\) .

Using the same method for region B, which is also equidistant from the galactic center, we get the same observed frequency of

\(6.225 *10^{14} Hz\)

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Answer:

One end of any bar magnet will always want to point north if it is freely suspended. This is called the north-seeking pole of the magnet, or simply the north pole. The opposite end is called the south pole.

Explanation:

Answer:

North Pole and South Poles

Explanation:

There is no east or west in a magnetic field of a magnet. The magnetic field lines comes from North pole to south pole.

Answer:

He traveled 9km

Explanation:

To do this problem you need to use the equation which is Speed= distance/time and this problem gives you the speed which is 18 km/h and it gives you the time 1/2 hour so you write the equation 18= d/ 1/2 which his distance is 9km