5. a piano tuner stretches a steel piano wire with a tension of 800 n. the steel wire is 0.4 m long and has a mass of 3 g. a. what is the frequency of its fundamental mode of vibration? b. what is the number of the highest harmonic that could be heard by a person who is capable of hearing frequencies up to 10,000 hz?

The changes (magnitude and direction) of the linear momentum of the object .-229.8 Kgm/s

The conservation of momentum states that, within a few problem domains, the quantity of momentum remains regular; momentum is neither created nor destroyed, but best modified through the movement of forces as described by means of Newton's laws of motion.

Calculation:-

Mass of object m₁ = 5 kg

velocity v₁ = 30 cos40° m/s

velocity =  - 30 cos40°m/s

Change in linear momentum = mass (v final - v initial)

                                                  = 5 ( - 30 cos40° -  30 cos40° )

                                                  = 5 ( - 30 × 0.766 -  30 0.766 )

                                                   = 5 ( - 30 × 0.766 -  30 0.766 )                                                      

                                                    = -229.8 Kgm/s

The regulation of conservation of momentum states that in an isolated machine the full momentum of or more bodies appearing upon each other stays regular except an outside force is applied. therefore, momentum can neither be created nor destroyed.

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Answer:

V = √ ( 6.65² + 9.87² ) ≈ √ 141.64 = 11.90 mph

A single force is resolved by An unlimited number. Option B.

This single force can be decomposed into two components, upward and to the right. Each component represents the influence of this chain in the specified direction. Any force can be decomposed into individual partial forces, just as individual partial forces can be put together.

The force can be decomposed graphically or by trigonometry into two force components. Each set of forces on an object can be replaced by a single force and a single acting pair that is statically equivalent to the original set of forces and moments. This set of equivalent forces and pairs is called an equivalent force pair system.

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The Right Hand Thumb Rule, which asserts that if the thumb is kept pointing in the direction of the current, the curl of the other fingers indicates the direction of the magnetic field, is along the eastern direction if the current is flowing to the north.

The right hand rule is a hand mnemonic in physics that is used to remember which way three-dimensional axes or parameters point. The right hand rule was developed in the 19th century by British physicist John Ambrose Fleming for electromagnetism applications. When the other two parameters are known, it is most frequently employed to identify the direction of the third parameter (magnetic field, current, magnetic force).

The right hand rule has a few modifications, which are described in this section. A conductor, like a copper wire, induces an electric current when it passes through a magnetic field (B). Faraday's Law of Induction is the name given to this phenomenon.

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Linear momentum is a vector quantity defined as  p=mv

where m is the body mass and v

its vector velocity. A body may undergo changes in linear momentum. Suppose a particle changes its initial momentum from pi to a final momentum pf, during a time Δt. We have

ΔpΔt=mvf−mviΔt=mΔvΔt

=m⟨a⟩

where ⟨a⟩=ΔvΔt

is an average acceleration, and we can identify the result above as the average force acting on the particle during the change in momentum:

⟨F⟩=ΔpΔt

Answer and Explanation:

A baseball has mass

m=0.145kg. Consider the x-axis defined in the figure below. We can write the ball's initial...

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Linear momentum is a vector quantity defined as  p=mv.

Units of mass times length over time squared are used to express the strength of a force. The most used unit in metric measurements is the newton (N), which is equal to one kilogram times one meter over one second squared.

its vector speed. Linear momentum can alter for a body. Let's say a particle undergoes a time-dependent shift in momentum from pi to pf. To date,

ΔpΔt=mvf−mviΔt=mΔvΔt

=m⟨a⟩

where where a=vt

is a typical acceleration, and the outcome shown above can be interpreted as the typical force exerted on the particle during the change in momentum:

⟨F⟩=ΔpΔt

A baseball has mass m=0.145kg. Consider the x-axis defined in the figure below. We can write the ball's initial.

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In order to prevent deer from crossing the highway, the experiment involved placing sound-emitting equipment at the perimeter.

A procedure used to confirm or deny a hypothesis, as well as assess the effectiveness or likelihood of something that has never been tried before, is called an experiment. By showing what happens when a particular factor is manipulated, experiments shed light on cause-and-effect relationships. Experiments have a wide range of objectives and sizes but always rely on a repeatable process and a logical analysis of the outcomes. Additionally, there are experiment conducted in nature.

While teams of scientists may spend years conducting methodical research to advance their understanding of a phenomenon, a child may conduct simple experiment to understanding how things fall to the ground. In the science classroom, students benefit greatly from experiments and other hands-on activities. Experiments can improve test results and increase student engagement.

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It's internal energy decreases of 18000J.

ΔQ = ΔU + ΔW

-12000J = ΔU + 6000

ΔU = - 18000J

Internal energy is the energy attributed to the disorderly, haphazard motion of molecules. It refers to the intangible microscopic energy on the atomic and molecular levels, which is distinct in scale from the macroscopic organised energy connected to moving objects. A glass of water that is at normal temperature and is resting on a table, for instance, has no discernible potential or kinetic energy. Although it is a seething mass of molecules moving at hundreds of metres per second at the microscopic level. When we superimpose an ordered big scale motion on the water as a whole, this tiny energy would not necessarily alter if the water were thrown across the room.

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The acceleration is -0.48m/s².

Acceleration is the rate of change in both speed and direction of velocity over time. Anything is said to have been accelerated when it goes faster or slower in a straight line.

Suppose that θ=35°

First, you need to set up equations for both blocks.

Let m₁ be 10kg and m₂ be 5kg and for our computations suppose right is positive and up is positive

For m₁ the solution is:

Sigma Fx = ma

T - m₁gsin35 = m₁a

where T = tension

For m₂

m₂g - T = m₂a

Add the two equations together

m₁a + m₂a = T-m₁gsin35 + m₂g - T

a(m₁ + m₂) = m₂g - m₁gsin35

a= (5×9.8 - 10×9.8×sin35)/(10 + 5)

a= -0.48m/s².

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Power tools must be used since all interior walls are reinforced is a consideration when forcing interior walls.

The correct option is  C.

The load of the floor or roof construction above them is supported by load-bearing walls, also referred to as "bearing walls." They are made to transfer weight from the roof to the foundation by passing through the flooring. A bearing wall, also known as a load-bearing barrier or a structural wall, supports the entire weight of the home. This wall assists in distributing the weight of the building from the roof to the base, and its loss could lead to the building collapsing.

Tom proposes going up to the attic or basement to check which direction the joists run to see if a wall is load-bearing. The wall is still most likely not load-bearing if it runs parallel to the joists.

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The complete question is -

What is a consideration when forcing interior walls?

A-The wall coverings often hide interior metal framing.

B-The walls may be load-bearing and affect structural integrity.

C-Power tools must be used since all interior walls are reinforced.

D-Forcing the wall will require firefighters to work in a team of two.

The population graph of a human population would have an exponential phase followed by a lag phase.

We know that the population has to do with the number of people that can be found in a particular geographical location. Let us note that the population of a place could tend to increase or decerease with time. If the population is increasing with time, then more individuals are added.

It is common to see that the population would undergo a growth phase and then this could be followed by a period in which there is a lag which is shown as a plateau on the graph. This is the general shape of the graph of human population growth.

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The purpose of an airbag is to increase the time it takes your body to come to a stop during an automobile accident. this increased time causes the force of the impact to decrease - True.

Air bags add protection and should be used in connection with seat belts.

Air bags increase the amount of time it takes to stop the driver and passenger's momentum. During a collision, the motion of the driver and passenger propels them towards the windshield.

The purpose of an airbag is to increase the time it takes your body to come to a stop during an automobile accident. this increased time causes the force of the impact to decrease - True.

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The total upward, vertical force on the liquid due to its surface tension as the ring is pulled upward is 2π (r inner + router ) × r cos θ.

Surface tension is the tendency of liquid surfaces at relaxation to shrink into the minimal surface area viable. floor anxiety is what permits gadgets with a better density than water consisting of razor blades and bugs to go with the flow on a water surface without turning even partly submerged.

Surface tension arises because of cohesive interactions between the molecules within the liquid. At the bulk of the liquid, the molecules have neighboring molecules on each facet. Molecules are pulling each other equally in all directions inflicting an internet force of zero.

Calculation:-

Upward force = length of contact × r cos θ

                       = 2π (r inner + router ) × r cos θ

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The conservation of angular momentum is the reason that (nearly) all of them rotate in the same direction.

The nebular hypothesis is regarded as the most widely accepted theory of planetary creation. According to this theory, a massive molecular cloud several light-years across gravitationally collapsed to create the Solar System 4.6 billion years ago.

The nebular hypothesis states that our solar system arose at the same period as our Sun. The nebular hypothesis proposes that a spinning cloud of dust called a nebula, composed primarily of light elements, flattened into a protoplanetary disk and developed into a solar system made up of a star with orbiting planets .

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The total kinetic energy of the system of the two objects can be achieved by adding of the kinetic energies of first and second body.

Kinetic energy is directly proportional to the mass of the thing and to the square of its velocity: K.E. = 1/2 m v². If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared. So the formula for kinetic energy is that it's equal to 1/2 times the mass of the object, times the immensity of its velocity squared, or another way to think about it, its speed squared. In an elastic collision, both the impulse and the kinetic energy of the system are maintained. On the other hand, in an inelastic collision, momentum is sustained but kinetic energy can not be sustained.

So we can conclude that two objects of equal mass moving with equal speeds in opposite directions have a total momentum of zero, but their total kinetic energy is not zero.

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Simple harmonic motion is performed by an object attached to an ideal spring. You could double the force constant to double the total energy.

Simple harmonic motion is a type of periodic motion in mechanics and physics in which the restoring force on the moving object is directly proportional to the magnitude of the displacement and act in the direction of the object's equilibrium position.

The unit mass to the spring executes a simple harmonic motion in this exercise, and the maximum mechanical energy is

Em = ½ k A²

Where A represents the range of motion

We must increase the amplitude or the spring constant to double the energy.

To double the total energy, we must either increase the amplitude by a factor of 2 or increase the spring constant by a factor of 2.

The correct answer is to multiply the force constant by two.

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Answer:

Explanation:

Given:

m₁ = 90.0 gram = 0.090 kg

L₁ = 75 cm = 0.75 m

L₂ = 45 cm = 0.45 m

__________________

m₂ - ?

Lever balance (rule of moments):

M₁ = M₂

F₁·L₁  = F₂·L₂

m₁·g·L₁  = m₂·g·L₂

m₁·L₁  = m₂·L₂

Mass:

m₂ = m₁·L₁ / L₂

m₂ = 0.090·0.75 / 0.45 = 0.150 kg    or   150 gram

The energy stored by the capacitor decreases by 1/K J.

A capacitor is a device that shops electrical electricity in an electric-powered discipline by virtue of gathering electric prices on close surfaces insulated from each other. it's miles a passive electronic thing with terminals. The impact of a capacitor is known as capacitance.

Calculation:-

Energy stored in an air-filled Capacitor = 30 J

  = Q²/2C = U = 30 J

Now, the power source is disconnected and the dielectric is inserted.

Since there is no source to provide a charge, So charge remains constant.

Noe, capacitance is increased to K times of initial capacitance

C' = KC

U' = Q²/2C'

    = Q²/2KC

    = 1/k (Q²/2C)

   = 1/K × 30

  = 30/K J

Hence, the energy decreases with the inserting dielectric.

The capacitor is a device for storing electrical power, along with two conductors in near proximity and insulated from every other. A simple instance of this type of storage tool is the parallel-plate capacitor. the main function of capacitors is to save electrostatic electricity in an electric area, and deliver this power to the circuit, when vital. They allow the AC to skip but block the drift of DC to avoid a risky breakdown of the circuit.

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The vertical height the basketball player will attain in the given time is 2.2 m

From the question given above, the following data were obtained:

The vertical height attained by the player, can be obtained as illustrated below:

h = ½gt²

h = ½ × 9.8 × 0.671²

h = ½ × 9.8 × 0.450241

h = 2.2 m

Thus, from the calculation made above, we can conclude that the vertical height of the player is 2.2 m

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6.1m/s is correct answer.

What is frictional force?

Frictional force is defined as the force that opposes motion when one body's surface comes into contact with the surface of another. Friction force reduces a machine's mechanical advantage, or the ratio of output to input. An automobile uses about one-quarter of its energy to restrict friction force, but friction in the tyres keeps the car on the road, and friction in the clutch allows us to drive.

Friction is one of the most prevalent phenomena in the physical universe, affecting everything from matchsticks to machines to the molecular structures of every simple and complex object.

Frictional force is the opposing force formed when two surfaces attempt to move in the same direction or in opposite directions. A frictional force's primary function is to generate resistance to the mobility of one surface over another. The frictional force is determined by the texture of the body's surface.

According to conservation of momentum

m1u1= (m1+m2)v

m1=1362

m2=367

u1=7.8

v=?

m1u1= (m1+m2)v

1362x7.8 = 1727v

v = 6.1 m/s

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The answer is  2.416 m/s^2.

Solution:

friction force on the upper block = umg

= 0.13*2*9.81

= 2.5506 N

so writing the equation of motion for the upper block

T - f = ma

or T-2.5506 = 2a

writing the equation of motion for the lower block

mg-T=ma

or 9.8-T=a

Hence, we get a  = 2.416 m/s^2.

Since the top block slides to the right, the frictional force acting on it acts to the left. His reaction wall acts on the forward-acting lower block. The frictional force absorbs x mechanical energy from the upper block, but transfers only y mechanical energy to the lower block. To find the acceleration of the body in terms of angle and coefficient of friction.

A material modulus value of 1 means that the friction force is equal to the normal force. This means that the force required to move an object is equal to its weight. An object may have a friction value greater than 1. There are two types of friction coefficients: static friction coefficient and dynamic friction coefficient. The former is sometimes called the initial friction coefficient and the latter is sometimes called the dynamic or sliding friction coefficient.

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To calculate the voltage across the capacitor is (1.44)R.

What is speed?

The speed at which electrons move past a particular location in an electrical circuit is known as the "current." In the most basic terms, current = flow. The international unit for measuring current is the ampere, pronounced "amp" (AM-pir).

What is voltage?

Voltage is the "pressure" under which electricity is pushed. Higher voltages result in more electricity flowing to an electronic device. The amount of voltage is measured in units known as volts (V).

I=1.4A

V=?

V=(1.44)R

R⇒ resistance

Therefore, the voltage across the capacitor is (1.44)R.

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Vehicle tail lights must be visible from 500 feet to the rear in normal sunlight.

On most of the vehicles, the tail lights are red and the brake lights are more luminous red. Tail lights also include the backup lights which are white in color. The idea of "red signifies stop" has always been connected to danger. Red can be an indication of dangerous plants and insects in the natural world.

The wavelength of red light is the highest (620-750 nm) so it can travel the largest distance and can be visible from a distance of 500 Feet.

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If you launch a cannon at 15 degrees above horizontal, and another cannon at 75 degrees above horizontal, both will have same horizontal range

In a projectile motion , horizontal range can be calculated using formula

Range = [tex]u^{2}[/tex] sin ( 2 theta) / g

where

u = initial velocity

theta = angle along the horizontal

g = acceleration due to gravity

if we substitute the value of 15 and 75 in formula , we get

sin ( 2 * theta_1 ) = sin ( 2*15 ) = sin 30 = 1/2

sin ( 2* theta_2 ) = sin ( 2 * 75 ) = sin (150) = 1/2

both the values are coming out to be equal

hence , will have equal value of horizontal range

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The frequency heard by car A is determined as 398.4 Hz.

The frequency heard by car A is determined by applying the following equation.

f = fs(v - v₀) / (v - vs)

where;

f = 395(343 - 19.2) / (343 - 22)

f = 395(1.0087)

f = 398.4 Hz

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Flame length is used to describe the fireline intensity.

The sum of the heat released during a given period of time for each unit length of the fire's edge and the rate at which the fire spreads per unit of ground area is called the heat availability of combustion per unit of ground. Btu/sec/ft of fire front is the fundamental unit of measurement.

The rate of energy or heat emission per unit time per unit length of the fire front is called the fireline intensity (kW/m). From a mathematical perspective, it is equal to the product of the fuel's low heat of combustion (kJ/kg), the amount of fuel used in the flame front (kg/m2), and the linear rate of fire

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(a) The magnitude of the resultant of the forces is 24.2 N.

(b) The direction of the forces is  12⁰.

(c) The equilibrant of two forces is -24.2 N.

The resultant of the forces is calculated by resolving the forces into x and y components as follows;

The x-component of the forces is calculated as follows;

sum of x - component of the forces, X = 8.66 N + 15 N = 23.66 N

The y-component of the forces is calculated as follows;

sum of y - component of the forces, Y = 5N + 0 N = 5 N

The resultant of the forces is calculated as;

F = √(X² + Y²)

F = √(23.66² + 5²)

F = 24.2 N

The direction of the forces is calculated as;

θ = arc tan (Y/X)

θ = arc tan (5 / 23.66)

θ = 11.9⁰ ≈ 12⁰

An equilibrant force is equal in magnitude both opposite in direction to the resultant force.

Thus, the equilibrant of two forces is -24.2 N.

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The correct order of the planets in the solar system, starting closest to the sun will be the order Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune followed by the possible Planet Nine.

The sun, our star, and everything gravitationally connected to it, including the moons, planets, and dwarf planets like Pluto, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, make up our solar system. The only known example of a habitable planet, the only star we can see up close, and the only planets we can explore with spacecraft are all found in the Solar System.

Understanding the formation and evolution of planets, as well as the conditions required for life, is dependent on studying the solar system. In a cloud of gas and dust known as the solar nebula, the Sun and the planets jointly created it 4.6 billion years ago.

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Answer:

i think its 12.6 NATO per second

Both depths will take the same amount of force to hold the apple underwater.

Both depths will take the same amount of force to hold the apple underwater. Although the pressure on the top of the apple will also increase as the depth does, the pressure on the bottom of the apple will be greater. No of the depth, the net difference will remain the same. The force will therefore remain constant.

Science has a precise definition for the word "force." A force of this magnitude can be described as either a push or a pull. A force is not something that an object "has in it" or "contains." A force from another object can affect something else. The idea of a force does not distinguish between living and non-living things.

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The sudden cessation of energy generation causes the core to collapse and the star's outer layers to collapse onto the core.

What is core collapse?

Core-collapse supernovae are spectacular explosions that occur at the end of a big star's thermonuclear evolution, giving rise to neutron stars and black holes. They are among the most intense occurrences in the universe, play an important role in the synthesis and distribution of chemical elements, drive the development of new stars, and are closely tied to an enigmatic subclass of gamma-ray bursts. As a result, astro-physicists are keen to learn which stars burst as supernovae, what physical mechanisms produce the explosion, and what observable effects result from these cataclysmic events.

When the explosion wave generated in the optically obscured stellar centre eventually reaches the surface layers of the star, the visual supernova outburst begins.

The fire ceases because iron does not work as a fuel. The sudden cessation of energy output leads the core to collapse and the star's outer layers to collapse onto the core. The infalling layers compress so quickly that they 'bounce' off the iron core at near-lightspeed.

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