A6 kg mass moving at 10m/s collides with a 4 kg mass moving in the
same direction at 4 m/s. After the collision both the 6 kg and 4 kg mass
continue to move in the same direction. If the 4 kg mass is moving at
10m/s, what is the speed of the 6 kg mass?

Given:

The speed of the train is,

The actual frequency of the whistle is,

The speed of sound in air is,

To find:

The frequency heard by the observer

Explanation:

The apparent frequency when the train approaches the observer is given by,

Hence, the frequency heard by you is 209.2 Hz.

One physical force that can change an object from one phase to the next is temperature. The phase of matter is determined by the arrangement and movement of its particles. As temperature changes, the average kinetic energy of the particles also changes, causing them to move faster or slower.

This change in movement can lead to a change in the arrangement of particles, which ultimately changes the phase of the matter.
For example, if a solid is heated, the particles gain energy and vibrate faster, causing the bonds between particles to weaken. Eventually, the bonds break, and the particles are able to move freely, resulting in a liquid phase. Similarly, if a liquid is cooled, the particles lose energy and move slower, causing the bonds between particles to strengthen. Eventually, the particles will become fixed in a rigid pattern, resulting in a solid phase.

Therefore, temperature can act as a physical force to change the phase of matter, and it is a fundamental concept in the study of thermodynamics and phase transitions.

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The given sequence does converge. It converges to 4. To determine if the given sequence converges, we need to analyze its pattern.

The sequence is defined as {4- (3)}** n=0, where n represents the index of the term in the sequence. The expression within the braces, 4- (3), suggests that each term is obtained by subtracting 3 multiplied by the previous term from 4.

Let's calculate a few terms to observe the pattern:

Term 0: 4 - (3)* = 4 - 0 = 4

Term 1: 4 - (3)4 = 4 - 12 = -8

Term 2: 4 - (3)(-8) = 4 + 24 = 28

Term 3: 4 - (3)*28 = 4 - 84 = -80

From the calculations, it is clear that the sequence does not converge to a specific value. Instead, it oscillates between positive and negative values, never settling down to a single value. Therefore, the given sequence does not converge.

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Given that a 3.0 kg object is moving with an acceleration of 2.7 m/s² in the positive direction of the y-axis and The magnitude of the other force is determined to be 0.6 N.

To find the magnitude of the other force acting on the object, we need to use Newton's second law of motion, which states that the net force acting on an object is equal to the product of its mass and acceleration, \(F = ma\).

In this case, the net force acting on the object is the vector sum of the two forces. Let's denote the force acting in the positive direction of the x-axis as Fx and the force acting in the positive direction of the y-axis as Fy.

Given that the mass of the object (m) is 3.0 kg and the acceleration (a) is 2.7 m/s², we can calculate the net force as \(F = ma\).

Since the net force is the vector sum of Fx and Fy, we can write the equation as √(Fx² + Fy²) = ma.

We are given that Fx = 8.4 N, and we need to find the magnitude of Fy. Substituting the given values into the equation, we get √(8.4² + Fy²) = (3.0 kg)(2.7 m/s²).

Solving this equation, we find that Fy² = (3.0 kg)(2.7 m/s²)² - 8.4². Taking the square root of both sides, we find Fy ≈ 0.6 N.

Therefore, the magnitude of the other force acting on the object is approximately 0.6 N.

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Answer:

False

Explanation:

It is actually I = V/R and V = I × R

The universe is made of a lot of galaxies. The likely explanation for a galaxy having more than one nucleus is that the galaxy must have swallowed several smaller galaxies that were its neighbors.

The universe is known to have a very largest galaxy called the giant elliptical galaxy that is made up of about a trillion stars.

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According to Newton's Third Law, the ball and the ground act on each other with equal and opposite forces. When the ball strikes the ground, the ground exerts an upward force on the ball, while the ball exerts an equal and opposite downward force on the ground. This is why the ball bounces off the ground.

Newton's Third Law states that for every action, there is an equal and opposite reaction. This law is often referred to as the law of action and reaction, and it applies to all physical interactions, from the motion of a rocket to the bouncing of a ball. In simplest terms, this law states that when two objects interact, they apply forces to each other of equal magnitude and opposite direction. This means that if object A exerts a force on object B, object B will exert an equal and opposite force on object A.

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The magnitude of the acceleration of the ball  applied at the bottom of the circle is expressed as FTension-FGravity/M.

You can write it down as FC = mv2 /r.

The centripetal force in a moving object attached to a string is equal to the product of the object's mass (mg) and the string tension (T).

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Answer: Heat

Explanation: All matter is made of tiny particles called atoms, molecules and ions. These tiny particles are always in motion – either bumping into each other or vibrating back and forth. It is the motion of particles that creates a form of energy called heat (or thermal) energy that is present in all matter

If two vectors a and b are given such that their dot product a · b equals zero, then the vectors a and b are orthogonal or perpendicular to each other.

The dot product of two vectors a and b is given by the formula a · b = |a||b|cosθ, where |a| and |b| are the magnitudes of the vectors, and θ is the angle between them. If the dot product of a and b is zero, then cosθ = 0, which means that θ is equal to 90 degrees or π/2 radians. In other words, the vectors a and b are perpendicular to each other.

Furthermore, since a · b = 0, we can rearrange the equation to get |a||b|cosθ = 0. Since cosθ can never be zero unless θ is equal to 90 degrees or π/2 radians, we can conclude that either |a| or |b| (or both) must be zero. This means that either vector a or b (or both) has zero magnitude, which would make it a zero vector.

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Answer:

1/ decreases

2/ yes;

In general there is no relationship, and any combinations of frequencies and amplitudes are allowed.

Explanation:

Explanation for 1/ - please see the picture attached below

Answer:

The Right to Protection: According to the Convention, this right includes freedom from all forms of exploitation, abuse and inhuman or degrading treatment.

Explanation:

They by law have to uphold the standards

a 2000 kg meteorite has a speed of 80 m/s just prior to colliding with earth and getting buried.  the recoil speed of earth is  2.67*10^(-20) m/s

2000*80=(5.98*10^24+2000)v

v=2.67*10^(-20) m/s

Recoil speed may be calculated using a straightforward equation according to the law of conservation of momentum, which is a result of Newton's Laws of Motion. It is based on the mass of the recoiling body and the mass and velocity of the body that was expelled.

According to Newton's Third Law, every applied force produces an equal and opposite response. The collision of a fast car with a brick wall is a typical illustration used to teach this law. The wall is pulled against by the car, which in turn is pulled against by the wall, crushing the car.

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Answer: No their are different chargers

No, Norbu cannot use the two thin copper wires to charge his mobile phone by inserting them directly into the socket.

Charging a mobile phone requires a proper charger and cable that are designed to regulate the flow of electricity and provide the appropriate voltage and current to the battery. Inserting copper wires directly into a socket is not only unsafe but also highly likely to result in electric shock, short-circuiting, overheating, or even causing a fire.

Using improper methods to charge electronic devices can lead to irreparable damage to the device, risk to personal safety, and damage to the electrical system. It's crucial to always use the correct and safe charging equipment provided by the manufacturer to ensure the safety of both the device and the user.

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Answer:

d) entire universe is governed by a single set of fundamental physical laws.

Explanation:

Astronomy is the field of study that researches and studies about the objects beyond Earth. The phenomena occurring in the universe and their effects on the planet Earth are all death under the subject of astronomy. The discovery and the origin of the Earth, the heavenly bodies and their existence are covered under astronomy. The fundamental laws of the astronomy proves to be equivalent for all the bodies. These laws are universal that helps in the research of the science of universe.

Answer:

Heat

Explanation:

All materials have go some sort of heat.

Answer:Since the friction  force is non-conservative as potential energy. All the work done by the friction forces results in a transfer of energy into thermal energy of the box  floor  system.

Explanation:

Answer:

"potential"

Explanation:

just completed a assignment on this hope it helped lol.

The position of a charge an electric field that gives an electric potential energy.

Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form.

A potential energy that arises from conservative Coulomb forces and is connected to the arrangement of a specific set of point charges inside a given system is known as electric potential energy.

The position of a charge an electric field that gives an electric potential energy.

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The tower can lean over the distance, x = 2.5m at the top.

It is assumed that the top is off-centered by distance, d=4.5m

The height of the tower is, h = 55m

Diameter of the tower is, D = 7.0m

Since we are assuming that the tower is uniform; so, its center of gravity (or center of mass) will be at its geometric center i.e.,

at height \(\frac{h}{2}\) = 27.5m from the base of support.

The tower can lean until a line projected downward through its center of gravity will fall outside its base of support of diameter. The center of mass can move a total of 3.5 m off of center and still be over the support base.

Corresponding to the center of mass, the top would have to move distance equal to one diameter (D) in order to put the center gravity over the pivot point of one side of the base.

So, further the top can lean over the distance,

x = D - d

x = 7.0 m - 4.5 m

x = 2.5 m

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The correct answer for the angular magnification of the telescope would be 13.11 x 10.

Determining  angular magnification:

An astronomical telescope has an objective with a focal length of 0.80 m and an ocular with a focal length of 6.1 cm. The angular magnification of the telescope is 131x. The formula to calculate the angular magnification of the telescope is given as, `M = -fo/fe` Where `M` is the angular magnification of the telescope.` fo` is the focal length of the objective.

`fe` is the focal length of the eyepiece or ocular. The negative sign indicates that the image is inverted. For an astronomical telescope, the objective is a convex lens and the eyepiece is also a convex lens. The focal length of the objective is `fo = 0.80 m`The focal length of the eyepiece is fe = 6.1 cm = 0.061 m.

Substituting the values in the formula, M = -fo/fe= - (0.80/0.061) = - 13.11. The magnification of the telescope is 13.11x. This magnification indicates that the image will appear 13.11 times closer to the observer. Therefore, the angular magnification of the telescope is given as `M = 13.11 x 10 = 131

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The change in internal energy is the work done minus the heat lost. ΔE = 650 kJ - 425 kJ = 225 kJ. Answer: D

The change in internal (thermal) energy of the athlete can be calculated using the first law of thermodynamics,

which states that the change in internal energy (ΔE) is equal to the work done on the system (W) minus the heat lost (Q): ΔE = W - Q. In this case, the athlete performs 650 kJ of work (W) and loses 425 kJ of heat (Q).

Therefore, the change in internal energy is: ΔE = 650 kJ - 425 kJ = 225 kJ. The correct answer is D) 225 kJ.

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Answer:

\(V = \frac{s(t_b) - s(t_a)}{t_b -t_a}\)

Explanation:

Given;

position of the object as s(t)

The average velocity is given by;

\(V = \frac{s(t_b) - s(t_a)}{t_b -t_a}\)

where;

s(tb) is the object's final position at time tb

s(ta) is the initial position of the object at time ta

tb is the final time of the object's displacement

ta is the initial time of the object's displacement

Answer:

(A) Gravity pulls the rock toward the center of the Earth.

Explanation:

Answer:

Wind patterns, Temperature and Ocean currents.

Hope that helps. x

The weather factors that indicate the climatic changes are ocean patterns, clouds, temperature and wind patterns.

The given problem is based on the climates and factor indicators leading to change of climates. Climate is nothing but itself a pattern that is used for creating a long-term weather forecast in a particular area.

There are several factors that can lead to climate change. Some factors are discussed below as follows:

Thus, we can conclude that the weather factors that indicate the climatic changes are ocean patterns, clouds, temperature, and wind patterns.

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Answer: Stress that makes one rock squeeze or push against another.

Explanation:

Answer:

Basically W = mg, as you can see, W varies directly as m where g is a constant (9.81 m s^-2 for Earth) , this explains why the more mass an object has,the greater its weight

Explanation:

Answer:

make the child walk by itself

Explanation:

duh

Answer: The time, t, is approximately 1.57 seconds

Explanation:

The data we have from the question;

Displacement = 2.0 meters

Acceleration due to gravity on the moon = 1.62

Initial velocity = 0 m/s

We can use the second equation of motion for this one;

S = ut + 1/2at²

Where:

- S is the displacement.

- u is the initial velocity.

- a is the acceleration.

- t is the time measured in seconds.

We are now ready to substitute;

2 = 0(t) + 1/2(1.62)t²

==> 2 = 0 + 0.81t²

==> 2/0.81 = 0.81t²/0.81

==> \(\sqrt{2.47}\) = \(\sqrt{t ^{2}\)

==> The time, t, is approximately 1.57 seconds

Hope this helped! Have a good day :D

The current can be found as follows:

Answer:

Approximately 20605 A

When a large cannon and the cannonball that it fires interact during an explosion, the cannonball experiences the greatest force.

A cannonball and a large cannon will be involved in a collision when a cannon fires. A cannonball leaves a cannon at a velocity determined by the amount of gunpowder in the cartridge and the length of the barrel. When a cannonball leaves a cannon, it is subjected to two opposing forces: the force of the powder behind it and the force of air resistance in front of it.

The cannonball will experience the greatest force because it is lighter than the cannon. The force of the powder in the cartridge is used to propel the cannonball through the barrel of the cannon. The cannon experiences a smaller force than the cannonball because it is heavier than the cannonball.

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