If a ball is thrown horizontally, and the initial horizontal velocity is 5 m/s, what will be the final horizontal velocity? *

Answer:

Yes.

Explanation:

Reactors use uranium for nuclear fuel. The uranium is processed into small ceramic pellets and stacked together onto sealed metal tubes called fuel rods. The heat created by fission turns the water into steam.

Answer:

You either need to lower the volume so the sounds intensity is lessened. Or you can pad the walls to absorb the sound rather than defect.

Explanation:

Sound intensity allows it to be heard further, but in an enclosed room it will start returning. Sound will deflect off of hard objects do to its interactions with solids. A softer and foamy material can dampen it.

The penny will accelerate due to gravity, increasing its speed to the point that it will be traveling at a bullet's pace by the time it reaches the earth.

What is Force of Gravity?

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The tool used to measure automatic preferences such as one's attitude towards different groups is called the Implicit Association Test (IAT). This tool measures psychology the strength of associations between mental representations of objects in memory.

The IAT assesses implicit biases that may not be consciously recognized or acknowledged by individuals. It is a widely used tool in social psychology research to understand the underlying attitudes and biases that people may have towards different social groups such as race, gender, and sexual orientation. The IAT involves categorizing various stimuli such as words or images into different categories as quickly as possible, which can reveal the strength of an individual's associations and biases. While the IAT is not without controversy and limitations, it remains a valuable tool for understanding automatic preferences and biases that may influence behavior and decision-making in subtle ways.

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Answer:

we can predict where they are in the future, know where they were in the past

can also build a device that generates a specific type of desired movement,

Explanation:

With the knowledge of the laws that govern the movement of bodies, we can predict where they are in the future and therefore know if there may be an accident, crash.

We can also know where they were in the past and therefore know if a fact is the result of these movements, craters, collapse of buildings, etc.

We can also build a device that generates a specific type of desired movement, for example pulleys that help us with work, etc.

Maxwell's equations describe the behavior of electromagnetic waves. In this particular electromagnetic field, we can see that the electric field (E) and magnetic field (B) are perpendicular to each other and both vary sinusoidally with time and distance.

To show that this field satisfies Maxwell's equations, we need to confirm that it satisfies the wave equation.
The wave equation relates the second derivative of the electric field with respect to distance (x) to the second derivative of the electric field with respect to time (t), and similarly for the magnetic field. When we apply the wave equation to this field, we find that w^2 = c^2k^2, where w is the angular frequency and c is the speed of light.

This relationship between w and k is known as the dispersion relation and it ensures that this particular electromagnetic field satisfies Maxwell's equations. In summary, the electromagnetic field given by (9.64) can satisfy Maxwell's equations if the angular frequency (w) and wave number (k) are related through the dispersion relation w^2 = c^2k^2.

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When a car's velocity is positive and its acceleration is also positive, the car's overall motion is speeding up in a forward direction.

Velocity is the measure of an object's speed in a specific direction, while acceleration is the measure of how quickly an object's velocity changes over time. So, if both the velocity and acceleration are positive, the car's speed is increasing in the forward direction. This means that the car is moving faster and faster in a forward direction.

Likewise, it can be said that the automobile develops an accelerated movement.

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ANSWER

547.5 J

EXPLANATION

Given:

• The child's mass, m = 15 kg

• The height of the slide, h = 5 m

• The velocity of the child at the bottom of the slide, v = 5 m/s

Find:

• The loss of mechanical energy due to friction

The loss of mechanical energy due to friction is the difference between the child's gravitational potential energy at the top of the slide, and the child's kinetic energy at the bottom of the slide,

Replace the known values and solve,

Hence, 547.5 Joules of energy were lost due to friction.

When the speed of a particle is halved, its kinetic energy is reduced by a factor of four.

The kinetic energy of a particle is given by the equation:

Kinetic Energy = (1/2) * mass * velocity^2

Since kinetic energy is directly proportional to the square of the velocity, reducing the velocity by half results in the kinetic energy being reduced to one-fourth of its original value.

Mathematically, if the initial kinetic energy is K, and the final kinetic energy after halving the speed is K', we have:

K' = (1/2) * mass * (velocity/2)^2

  = (1/2) * mass * (velocity^2 / 4)

  = (1/4) * (1/2) * mass * velocity^2

  = (1/4) * K

Thus, the final kinetic energy is one-fourth (25%) of the initial kinetic energy when the speed is halved.

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Answer:

Golfer B hits his golf ball at a higher rate of speed and with more force. This means that golfer B's ball will travel for a longer period of time and a longer distance due to newtons first law, where it says an object in motion stays in motion, with the same speed and in the same direction.

Explanation:

Answer:

a) 6498.84 kW

b) 0.51

c) 0.379

Explanation:

See the attached picture below for the solution

Given-

Temperature at state 1 \(T_{1}\) is 40 degree cel. This is equal to the 313 K.

Temperature at state 1 \(T_{2}\) is 650 degree cel. This is equal to the 923 K.

To know the mass flow rate use the idol gas equation. Idol gas equation for a substance can be given as,

\(PV=nRT\)

Rewrite this equation for \(n\),

\(n=\dfrac{PV}{RT}\)

Put the value of known variable from the question,

\(n=\dfrac{100\times\dfrac{850}{60} }{0.287\times 313}\)

\(n=15.77\)

Thus the value of n is 15.77 kg/sec.

Temperature at state 2 is,

In Bryon cycle we know that the processes 1-2 and 3-4 are isotropic. Hence,

\(T_{2} =T_{1}\left (1+ \dfrac{r_{p}^{\dfrac{\gamma-1}{\gamma}-1} }{c_{v} } \right )\)

\(T_{2} =313\left (1+ \dfrac{16^{\dfrac{1.35-1}{1.35}-1} }{0.821 } \right )\)

\(T_{2} =700\)

Temperature at state 3 is,

\(T_{3} =\dfrac{T_4}{1+c_p(r_p^{\dfrac{\gamma-1}{\gamma}-1}-1)}\)

Put the value in above equation we get,

\(T_3=1682\)

\(W=mc_p(T_i{n}-T_{out})\)

\(W=mc_p(T_3-T_2-T_4+T_{1})\)

\(W=15.77\times1.109(1682-700-923+313)\)

\(W=65\)

Thus the net power output is 70 watt.

\(r_b=\dfrac{T_2-T_1}{T_3-T_4}\)

\(r_b=\dfrac{700-313}{1682-923}\)

\(r_b=0.51\)

Hence the back work ratio is 0.51.

\(\eta=\dfrac{W}{Q_{in}}\)

\(\eta=\dfrac{65}{mc_p(T_3-T_2)}\)

\(\eta=0.379\)

Hence, for the given problem the net power output is 70 watt,the back work ration is 0.51, and the thermal efficiency is 0.379.

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If you have charges that were made against you but were dropped by the person who made them but are still on record, you can still take steps to address the situation. It is important to note that having charges on your record can have negative effects on your life, such as hindering your ability to secure employment and housing.

To address this situation, you may need to seek legal advice or the assistance of a criminal defense attorney. They will be able to guide you through the process of getting the charges removed from your record, or having them expunged. This will involve filing a petition to the court, providing evidence that the charges were dropped, and demonstrating that you meet the eligibility criteria for expungement or record sealing

. The process may vary depending on your location and the type of charges you faced, so it is important to seek guidance from a legal professional.To summarize, if you have charges that were made against you but were dropped by the person who made them but are still on record, you can seek legal advice or the assistance of a criminal defense attorney to have the charges removed from your record through a petition to the court.

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The given question is not clear as it seems to be incomplete. However, based on the information provided, it appears that a 2.0 kg pendulum is swinging from point A. The height of point A is given as y.

To better understand the situation, let's break it down step by step:

A pendulum is a weight suspended from a fixed point and can swing back and forth.
In this case, we have a 2.0 kg pendulum, which means the weight of the pendulum is 2.0 kg.

Based on the information provided, we know that a 2.0 kg pendulum swings from point A, but further details are required to provide a more accurate answer.
The pendulum swings from point A, but it's not clear what point A represents. It could be the highest point of the swing or the starting position.
The height of point A is given as y, but the actual numerical value of y is missing.

Based on the information provided, we know that a 2.0 kg pendulum swings from point A, but further details are required to provide a more accurate answer.

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Explanation:

According to Charles law Volume is directly proportional to Temperature.

meaning the higher the volume the higher the temperature. in that sense 1 litre has less thermal energy

According to Charles' Law, while pressure is maintained constant, the volume of a given amount of gas varies in direct proportion to the absolute temperature of the gas. The Kelvin scale is used to measure temperature to determine the absolute temperature.

According to Charles' Law, for a given mass of gas under a constant pressure, the volume changes in direct proportion to the absolute temperature of the gas. The Kelvin scale is used to measure temperature in absolute terms.

According to Charles' law, for a given amount of gas and a constant pressure, the volume of the gas is precisely proportional to its kelvin-scale temperature.

Therefore, Volume and temperature are exactly related, according to Charles' law. Consequently, the temperature will rise as the volume increases. One litre contains less thermal energy in that sense.

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Answer:

So work require will be 3888×10×10³J

Explanation:

⇒Work done=Change in kinetic energy

⇒KE=1/2mv²

⇒Mass->15000kg

⇒Velocity->72km/h

⇒KE=1/2×15000×(72)²

⇒KE=1/2×15000×5184

⇒KE=7500×5184

⇒KE=3888×10×10³J

The total resistance in the circuit is 144Ω, and the total current is approximately 0.694A.

To find the total resistance and total current in the given circuit, let's break down the steps:

1. Delta to Wye Transformation:

  - Identify the resistors in the delta configuration: 200Ω, 40Ω, and 120Ω.

  - Apply the delta to wye transformation to convert the resistors into a wye configuration:

    - R₁ = (Rb * Rc) / (Ra + Rb + Rc) = (40 * 120) / (200 + 40 + 120) = 16Ω

    - R₂ = (Ra * Rc) / (Ra + Rb + Rc) = (200 * 120) / (200 + 40 + 120) = 96Ω

    - R₃ = (Ra * Rb) / (Ra + Rb + Rc) = (200 * 40) / (200 + 40 + 120) = 32Ω

  - Replace the delta configuration with the wye configuration using the calculated values: R₁ = 16Ω, R₂ = 96Ω, R₃ = 32Ω.

2. Total Resistance Calculation:

  - The total resistance (RT) in the circuit is the sum of the individual resistances:

    - RT = R₁ + R₂ + R₃ = 16Ω + 96Ω + 32Ω = 144Ω.

3. Total Current Calculation:

  - The total current (I) can be calculated using Ohm's Law: I = V / RT, where V is the voltage across the circuit.

  - Given that the voltage (V) is 100V, the total current (I) is: I = 100V / 144Ω = 0.694A.

Therefore, the total resistance in the circuit is 144Ω, and the total current is approximately 0.694A.

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Explanation:

given that the raven flies south for

time= 10 sec

speed= 10km/s

we know that speed=distance/time

distance=speed*time

distance=10*100

distance=1000m

distance=1km

also flies

distance=0.5km = 500m

time= 50 sec

speed= distance/time

speed=500/50

speed= 10m/s

speed= 0.01km/s

The average speed of an object is defined as the distance traveled divided by the time elapsed.

average speed= (1000+500)/10+50

average speed= (1500)/60

average speed= 25m/s

average velocity= (10km/s+0.01km/s)/2= 10.01/2= 5.005km/s

Answer:

.8163 kg

Explanation: W=mg

The newtons = weight

Force due to gravity= 9.8m/s ^2

8N=m(9.8m/s^2)

M= .8163 kg

Explanation:

it's a unit used to measure charge (C)

1C=1000millicoulombs

1millicoulomb=1000microcoulumbs

Answer:

1 column - 3 x 10⁹ start columb

= 1 / 10 e mu

column is a bigger unit so in practice the smaller unit micro column is also used the smaller unit of charge

1 Milli column - 10-³

1 micro column 10-⁶

the force of attraction or illusion between the two point charge is directly proportional to the product of the magnitude and inversely proportional to the square of distance between them the direction of force along line joining the two charge

hope it's helpful

Answer:

Explanation:

Momentum = m * v  = .12 * 150 = 18 kg m/s

In order from the center outwards, the regions of the sun are shown below in which core is the innermost region and corona is the outermost region.

To answer your question, the regions of the sun placed in order from the center outwards are as follows:

1. Core (center)
2. Radiative zone
3. Convective zone
4. Photosphere
5. Chromosphere
6. Corona (outermost region)

Starting from the center, the core is where nuclear fusion occurs, followed by the radiative and convective zones where energy is transported outwards. The photosphere is the visible surface of the sun, followed by the chromosphere and the corona, which are the outermost layers of the sun's atmosphere.

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For a given amount of energy utilized to create the signal, a microwave transmission can transmit the most data.

In order to provide high speed wireless connections that can send and receive audio, video, and data information, microwave is a line-of-sight wireless communication technique.

Highly directional antennas are used for line-of-sight propagation channels in terrestrial microwave transmission employing frequencies in the 4- to 12-GHz range. Depending on their spacing, the antennas' diameters can range from 12 inches to several feet and are often parabolic.

A series of microwave radio antennas make up this microwave link. They are found atop towers at various microwave locations. A communication system called a microwave link uses radio signals as a bridge to convey data between two or more fixed locations. A microwave network is composed of several microwave links.

Mobile cell towers and mobile phones communicate with one another via radio waves and microwaves, respectively. Because they can penetrate the atmosphere, microwaves are used. This signal can be transmitted to a satellite and used for global communication (more than one satellite is required for this).

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Solve the given problem as

Answer:

Radio waves

Explanation:

Answer:

vote me brainliest

Explanation:

The magnitude B of the magnetic field at the center of the semicircles is given by these expression B = (μ₀(I(outer) - I(inner)))/(π(a + b)). The B in terms of the asked variable.

In this case, we have two concentric semicircles, each carrying current in opposite directions. Let's consider a circular loop with radius r, where a < r < b. The magnetic field at the center of this loop will be the sum of the magnetic fields produced by the two semicircles.

For the outer semicircle (radius b), the magnetic field at the center can be calculated as follows:

∮ B · dl = μ₀I(outer)

For the inner semicircle (radius a), the magnetic field at the center has the opposite direction, so the equation becomes:

∮ B · dl = -μ₀I(inner)

Since the circular loop with radius r contains both the inner and outer semicircles, we can add these equations together:

∮ B · dl = μ₀(I(outer) - I(inner))

The line integral ∮ dl represents the circumference of the circular loop, which is 2πr:

B(2πr) = μ₀(I(outer) - I(inner))

B = (μ₀(I(outer) - I(inner)))/(2πr)

In this case, as we are interested in the magnetic field at the center of the semicircles, the radius r would be the average radius between a and b, given by:

r = (a + b)/2

Substituting this value into the equation, we get the final expression for the magnitude B of the magnetic field at the center of the semicircles:

B = (μ₀(I(outer) - I(inner)))/(2π((a + b)/2))

B = (μ₀(I(outer) - I(inner)))/(π(a + b))

Therefore, the magnitude B of the magnetic field at the center of the semicircles is given by B = (μ₀(I(outer) - I(inner)))/(π(a + b)).

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The flux of light from an isotropic source depend on the distance r from the source by  r-2.

What is isotropic source?

An isotropic source is a source of radiation or sound that emits energy in all directions equally. This type of source is usually assumed to have uniform power density in all directions, making it a simplifying assumption when analyzing a system. Examples include a point source in free space, such as a light bulb, or a sound source in a room.

The flux of light from an isotropic source (a source that radiates uniformly in all directions) decreases as the inverse square of the distance from the source. This means that the flux of light from the source decreases according to the equation F = 1/r2, where F is the flux of light, and r is the distance from the source. Therefore, the flux of light from an isotropic source decreases with the distance r from the source according to the equation F = r-2.

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