A 2 kg billiard green ball is moving toward the 2 kg white billiard ball on a pool table. The green ball is moving with an initial speed of 4 m/s and the white ball is at rest. The two balls collide and move apart. The white ball moves away from the green ball with a speed of -6 m/s. With what speed does the green ball move away?

The speed at which the other car is travelling is 27.71 m/s.

The speed of the second car is calculated as follows;

f₂ = f₁(v + v₁)/(v - v₂)

where;

600 = 512(345 + 26.8) / (345 - v₂)

600/512 = (345 + 26.8) / (345 - v₂)

1.1718 = 371.8/(345 - v₂)

345 - v₂ = 371.8/1.1718

345 - v₂ = 317.289

v₂ = 345 - 317.289

v₂ = 27.71 m/s

Thus, the speed at which the other car is travelling is 27.71 m/s.

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Explanation:

I know the second blank is decibels.

Answer:

the loudness of sound is called the sound wave or the volume..and it is measured in devibels(dB)

Answer:

Continents move

Explanation:

The radio lobes that flank some radio galaxies mainly produce b. synchrotron radiation.

Synchrotron radiation is generated when charged particles, such as electrons, are accelerated in a magnetic field. In radio galaxies, these charged particles are ejected from the central active galactic nucleus (AGN) and travel through the intergalactic medium, interacting with magnetic fields and creating the radio lobes.

This type of radiation is different from 21-cm radiation, black body radiation, and emission or absorption lines due to hydrogen. 21-cm radiation refers to a specific wavelength emitted by neutral hydrogen atoms, while black body radiation is emitted by objects based on their temperature. Emission and absorption lines are spectral features associated with the presence of specific elements in a light source or along the line of sight.

Overall, the synchrotron radiation produced by radio lobes is an important characteristic of radio galaxies, providing insights into the mechanisms occurring within these cosmic structures. Hence, b is the correct option.

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Answer:

A. Capitalist economy

Explanation:

The United States is a capitalist economy. Hope this helps, thank you !!

Answer:

C

Explanation:

(a) The acceleration of the salt shaker is 1.18 m/s².

(b) The distance traveled by the baseball player before coming to rest is 204.1 m.

The acceleration of the salt shaker at the given coefficient of kinetic friction is determined as follows;

a = μg

a = 0.12 x 9.8

a = 1.18 m/s²

Acceleration of the baseball player is calculated as follows;

a = μg

a = 0.4 x 9.8

a = 3.92 m/s²

The distance traveled by the baseball player before coming to rest is calculated as follows;

v² = u² - 2as

0 = 40² - 2(3.92)s

0 = 1600 - 7.84s

7.84s = 1600

s = 204.1 m

The complete question is below:

A baseball player slides into third base with an initial speed of 40 m/s. If the coefficient of kinetic friction between the player and the ground is 0.40, how far does the player slide before coming to rest?

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We know magenta absorbs Green color and Cyan absorbs Red color.

So , Final answer is : E) Red and Green

Answer:

A is the answer because if you multiply 8 and 2 the period of wave frequency is 16Hz long.

Explanation:

Answer:

B 0.125 its a simple conversion

The correct options for the factors that contribute to the Earth's magnetic field, which protects us from solar wind, are option b. the liquid outer core and option f. the Earth's rotation.

The Earth's magnetic field is generated by the motion of molten iron and nickel in the liquid outer core of the Earth (Option b). This motion, known as convection, generates electric currents that produce the magnetic field.

The Earth's rotation (Option f) also plays a significant role. The rotation of the Earth causes the convection currents in the liquid outer core to circulate and amplify the magnetic field, creating a dynamo effect.

The Earth's revolution (Option a) around the Sun and its tilt on its axis (Option c) are not directly responsible for the generation of the Earth's magnetic field. They are factors that influence climate and seasons on Earth but do not contribute to the magnetic field.

The seasons (Option d) are related to the Earth's axial tilt and its orbit around the Sun but are not directly connected to the generation of the magnetic field.

The solid inner core (Option e) is not involved in generating the Earth's magnetic field. It is mainly composed of solid iron and nickel and does not have the fluid motion required for the generation of a magnetic field.

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Answer:

Período del tambor: \(T = 0.25\,s\), fuerza sobre la prenda: \(F \approx 80.852\,N\), velocidad lineal del tambor: \(v \approx 10.053\,\frac{m}{s}\), velocidad angular del tambor: \(\omega \approx 25.133\,\frac{rad}{s}\).

Explanation:

La expresión tiene un error por omisión, su forma correcta queda descrita a continuación:

"Una prenda de 320 gramos de ropa gira en el interior de una lavadora si dicha lavadora tiene un radio de 40 centímetros y gira con una frecuencia de 4 hertz. Halle a) el período, b) la velocidad angular, c) la fuerza con la que gira la prenda y d) la velocidad lineal de la lavadora."

El tambor gira a velocidad angular constante (\(\omega\)), en radianes por segundo, lo cual significa que la prenda experimenta una aceleración centrífuga (\(a\)), en metros por segundo al cuadrado. En primer lugar, calculamos el período de rotación del tambor (\(T\)), en segundos:

\(T = \frac{1}{f}\) (1)

Donde \(f\) es la frecuencia, en hertz.

(\(f = 4\,hz\))

\(T = \frac{1}{4\,hz}\)

\(T = 0.25\,s\)

Ahora determinamos la fuerza aplicada sobre la prenda (\(F\)), en newtons:

\(F = m\cdot a\) (2)

\(F = \frac{4\pi^{2}\cdot m \cdot r}{T^{2}}\) (2b)

Donde:

\(m\) - Masa de la prenda, en kilogramos.

\(r\) - Radio interior del tambor, en metros.

(\(m = 0.32\,kg\), \(r = 0.4\,m\), \(T = 0.25\,s\))

\(F = \frac{4\pi^{2}\cdot (0.32\,kg)\cdot (0.4\,m)}{(0.25\,s)^{2}}\)

\(F \approx 80.852\,N\)

La velocidad lineal de la lavadora es:

\(v = \frac{2\pi\cdot r}{T}\) (3)

(\(r = 0.4\,m\), \(T = 0.25\,s\))

\(v = \frac{2\pi\cdot (0.4\,m)}{0.25\,s}\)

\(v \approx 10.053\,\frac{m}{s}\)

Y la velocidad angular del tambor de la lavadora:

\(\omega = \frac{2\pi}{T}\)

(\(T = 0.25\,s\))

\(\omega = \frac{2\pi}{0.25\,s}\)

\(\omega \approx 25.133\,\frac{rad}{s}\)

For speeds less than or equal to approximately 11.71 m/s, you can round the curve without slipping.

To determine the range of speeds at which you can round the curve without slipping, we need to consider the forces acting on the vehicle. These forces include the gravitational force, the normal force, and the frictional force.

The data provided is:

Radius of the curve (r) = 50 m

Banking angle (θ) = 25°

Coefficient of static friction (μ) = 0.28

For the vehicle to round the curve without slipping, the frictional force should be sufficient to provide the necessary centripetal force. This can be expressed as:

Ff ≥ m * v² / r

where v is the speed of the vehicle.

The centripetal force required is given by:

Fc = m * v² / r

Substituting Ff = μFn and Fn = mg into the inequality:

μ * mg ≥ m * v² / r

Cancelling the mass 'm' from both sides:

μ * g ≥ v² / r

Solving for 'v':

v² ≤ μ * g * r

Taking the square root:

v ≤ √(μ * g * r)

Now, let's substitute the known values:

μ = 0.28

g ≈ 9.8 m/s² (acceleration due to gravity)

r = 50 m

v ≤ √(0.28 * 9.8 * 50)

v ≤ √(137.2)

v ≤ 11.71 m/s (approximately)

Therefore, for speeds less than or equal to approximately 11.71 m/s, you can round the curve without slipping.

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ANSWER

a. f(35) = 10

b. (B) The amount of garbage produced per week by a city with population 6,000 is 5 tons

EXPLANATION

a. The only information we have is that the amount of garbage G is a function of the population in thousands.

If the town of Tola has a population of 35,000 and produces 10 tons of garbage, and we don't know the function the equation is f(35) = 10

b. This is the opposite case of item a. We have that G = 5 and p = 6. Remember that p is expressed in thousands of people. This means that for a population of 6,000 the amount of garbage produced each week is 5 tons. The answer to this question is option B.

The force in member BD is 330 N, and the reaction at C consists of two components: 130 N along the x-axis and 200 N along the y-axis.

What is force?
A force is indeed an influence that really can alter an object's motion according to physics. A motion of an object to mass to accelerate when it changes its velocity, such as when it moves away from rest. An intuitive way to describe force is as a push or a pull. A force is a vector quantity because it has both direction and magnitude. It is calculated using the newton SI unit (N). Force is denoted by the letter F. (formerly P). The net force acting on an object is proportional to the frequency that its momentum changes over time, according to Newton's second law in its original formulation.

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Answer: Acceleration = Force/Mass

Explanation:

F = ma

a = F/m

Acceleration = Force/Mass

Answer:

23 cm from the mirror

Explanation:

Infrared radiation has longer wavelengths compared to visible radiation, and lower energy per photon.

Infrared radiation (IR) is a type of electromagnetic radiation that is not visible to the human eye. It has a longer wavelength and lower frequency than visible light, and it is part of the electromagnetic spectrum that also includes radio waves, microwaves, visible light, ultraviolet radiation, X-rays, and gamma rays.

Infrared radiation is often associated with thermal radiation, which is the emission of electromagnetic waves from objects that are at a temperature above absolute zero. This is because infrared radiation is often emitted by objects that are warm, and it is this type of infrared radiation that is responsible for our ability to feel heat.

Infrared radiation has a wide range of applications, including in remote sensing, thermal imaging, and heating. For example, in remote sensing, infrared radiation can be used to observe and study the Earth and other celestial objects, as well as to detect and monitor changes in temperature, vegetation, and other physical properties. In thermal imaging, infrared cameras are used to detect heat signatures and create images based on temperature differences. In heating, infrared heaters use infrared radiation to heat objects and materials directly, rather than heating the air around them.

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Amphibians retain a set of gills their whole lives that help them to breathe in the water. So, the correct option is D.

Amphibians are defined as the class of cold-blooded vertebrates which is made up of frogs, toads, salamanders, newts, and caecilians. All amphibians that spend part of their lives in water and part of their lives on land.

Amphibians are born with gills, and some outgrow them when they become adults while others retain them for their entire lives.

Thus, the correct option is D.

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Answer:

Answer shown above.

Have a good day

The statement "It is always necessary to use more precise instruments when redoing an experiment to get better results" is false. While using more precise instruments can often lead to improved accuracy and reliability in scientific experiments, it is not always necessary or the sole factor that determines better results. Several other factors contribute to the quality of experimental outcomes, and the use of more precise instruments is just one aspect.

Precision in instruments refers to the level of detail and accuracy with which measurements can be made. It allows for smaller increments of measurement and reduces the potential for errors. When redoing an experiment, using more precise instruments can help reduce measurement errors and increase the level of detail captured. This can be particularly important in experiments that require precise measurements, such as those involving small quantities or sensitive reactions.

However, there are situations where the precision of instruments may not be the primary concern or where it may not significantly impact the results. For example, in experiments where the variables being measured have a large magnitude or natural variability, the use of extremely precise instruments may not yield significantly different results compared to instruments with slightly lower precision. In such cases, other factors like experimental design, sample size, controls, and methodology may have a more significant impact on the quality of results.

Furthermore, there may be instances where the cost, availability, or practicality of using more precise instruments outweighs the potential benefits. Precise instruments are often more expensive, require specialized training for operation, and may have limited availability in certain settings. In such cases, researchers may need to make trade-offs between precision and other factors like cost, feasibility, or time constraints.

In conclusion, while using more precise instruments can generally improve the quality of experimental results, it is not always necessary or the sole determinant of better outcomes. Factors such as experimental design, sample size, controls, methodology, and the nature of variables being measured also play significant roles in obtaining accurate and reliable results. Scientists need to consider the specific requirements and constraints of their experiments and make informed decisions about instrument precision based on a comprehensive evaluation of these factors.

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The distance traveled by car A when they pass each other is 3278.2 ft.

The time taken for the two cars to meet each other is calculated by applying the concept of relative velocity.

(Va + Vb)t = d

where;

(74 + 56)t = 5760

130t = 5760

t = 5760/130

t = 44.3 s

The distance traveled by car A when they pass each other is calculated as follows;

da = 74 ft/s x 44.3 s

da = 3,278.2 ft

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laws of reflection

I = r

angle of incident = angle of reflection

35 = 35

The following assertions are accurate when two particles of different masses are projected at the same projection angle and beginning velocity:

Different particle trajectories will be followed by the particles: A projectile's trajectory is determined by its beginning velocity, projection angle, and gravitational acceleration. Due to the various masses of the two particles, their gravitational forces and accelerations will be different, and as a result, so will their trajectories.

Several heights will be attained by the particles: A projectile's maximum height is influenced by its starting velocity and projection angle. The two particles will ascend to different heights since they have different masses but the same beginning velocity.

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The direction of the magnetic field that allows a conducting wire to levitate is a magnetic field pointing directly downward.

When a conducting wire carries current and is placed in an external magnetic field, it experiences a force known as the Lorentz force. The Lorentz force on a current-carrying wire is given by the equation:

F = I * L * B * sin(theta)

Where:

- F is the force on the wire

- I is the current flowing through the wire

- L is the length of the wire

- B is the strength of the magnetic field

- theta is the angle between the wire and the magnetic field

For the wire to levitate, the force on the wire should be equal to the force due to gravity, but in the opposite direction. In other words, the upward force on the wire should counterbalance the downward force of gravity.

Since the current in the wire is flowing directly upward, the force on the wire due to the external magnetic field should also be pointing directly downward to achieve levitation. This means that the magnetic field should be perpendicular to the wire and pointing directly downward.

To allow a conducting wire carrying current directly up to levitate, the external magnetic field must be perpendicular to the wire and pointing directly downward.

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Answer:

Explanation:

Given:

S = 230 km

t = 2.3 h

_________

V - ?

Speed:

V = S / t

V = 230 / 2.3 = 100 km/h

Answer:

In coin card experiment smooth card is used so that the card can slide easily from glass

Answer:

a is constant., v is increasing.

Explanation:

F = ma

F and m are both constant, so a is constant.

v = at, t is increasing, so v is increasing.

The velocity of the object will be equal to numerical multiplication of acceleration and time while  the acceleration of the body is the total applied force divided by mass of the object.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.

A spring balance can be used to calculate the force. Newton(N) is the SI unit of force.

For applying nonzero force, the object will come in motion.

Let, the mass of the body = m.

Force applied on it = F.

Acceleration of the body = a.

And after time t, the velocity of the object become v.

From Newton's 2nd law of motion, we can write,

Applied force = mass × acceleration.

⇒ F = ma

⇒ a = F/m.

And, final velocity will be = acceleration × time = at

Hence, the acceleration of the body is the total applied force divided by mass of the object and velocity of the object after some time will be equal to numerical multiplication of acceleration and time.

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