How do you solve force in Coulomb's law?.

The true statement about sound waves include;  Sound is caused when something vibrates, and  Sound moves by longitudinal waves.

option A and B are the correct answers.

A mechanical wave is a type of wave that requires material medium for its propagation.

A mechanical wave can be of two types based on mode of propagation;

A longitudinal wave travels parallel to the direction of the wave's vibration, while transverse wave travels perpendicular to the direction of the wave's vibration.

An example of longitudinal wave is sound wave. Pitch and loudness are basic characteristic of sound waves because they determine the quality of the sound.

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The information given on the X-axis of the graph attached is the years from 1920-2005 (option B).

A graph in mathematics or statistics is a data chart (graphical representation of data) intended to illustrate the relationship between a set (or sets) of numbers (quantities, measurements or indicative numbers) and a reference set.

A graph consists of two axes namely; X-axis and Y-axis. The x-axis on a graph is usually drawn left to right and usually shows the range of values of an independent variable.

On the other hand, the Y-axis is the axis on a graph that is usually drawn from bottom to top and usually shows the range of values of variable dependent on one other variable.

Therefore, according to the graph illustrated above, the x-axis shows the years from 1920-2005.

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The SI unit of mass is kg.

The International System of Units is the worldwide standard for expressing magnitudes or quantities of important natural phenomena. This system of units, also called the metric system, is commonly abbreviated to SI. It derives from its original French name Système international d'unités.

Mass is a quantitative measure of inertia in physics, a fundamental property of all matter. In effect, it is the resistance that an object offers to changes in velocity or position when a force is applied. The greater the mass of an object, the smaller the change caused by an applied force.

Mass is one of the fundamental properties of matter. The mass of an object is a measure of the amount of matter in it. The SI unit of mass is the kilogram (kg). The mass of an object is always constant. Weight is a measure of the weight acting on the body.

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It is the property of a rotating body determined by the product of the rotating object's moment of inertia and angular velocity. It is a vector quantity, which means that the direction is taken into account in addition to the magnitude. It is expressed in SI base units: Kg.m2.s-1

Angular momentum is the rotational equivalent of linear momentum in physics. It is an important physical quantity because it is a conserved quantity—in a closed system, the total angular momentum remains constant. Both the direction and magnitude of angular momentum are conserved. The property of any rotating object given by moment of inertia times angular velocity is defined as angular momentum. It is the property of a rotating body determined by the product of the rotating object's moment of inertia and angular velocity. An object's angular momentum is the product of its rotational inertia and angular velocity. The angular velocity of an object is the rate at which it turns.

Here,

It is a rotating body property that is determined by the product of the rotating object's moment of inertia and angular velocity. It is a vector quantity, which means that the direction, in addition to the magnitude, is considered. It is written in SI base units: Kg.m2.s-1

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The full-load current of a 25-horsepower, 480-volt, 3-phase, squirrel-cage induction motor is 12.7 A.

To calculate the full-load current of a 25 horsepower, 480-volt, 3-phase, squirrel-cage induction motor, you can use the formula:

Full-load current (I) = (Horsepower * 746) / (Voltage * 1.73 * Power factor)

where 1.73 is the square root of 3, which accounts for the 3-phase power and Power Factor is assumed to be 0.8

Plugging in the given values, we get:

I = (25 * 746) / (480 * 1.73 * 0.8)

I = 25746/(4801.73*0.8)

I = 25746/(4803.07)

I = 25*746/1478.4

I = 25*0.508

I = 12.7 A

Therefore, the full-load current of a 25-horsepower, 480-volt, 3-phase, squirrel-cage induction motor is 12.7 A.

It's worth noting that this is just an approximation and the current can vary depending on the motor design, the load and the power factor.

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A red light photon with a wavelength of 660 nm has energy equal to 3.01 x 10-¹⁹ J

The energy that a single photon carries is known as photon energy. Energy is inversely correlated with wavelength because it is directly proportional to the electromagnetic frequency of the photon. The energy of a photon increases with its frequency.

To determine the energy of photon, use the equation:

E = hc/ λ

Where,

E = the energy of photon

h = Planck's constant (6.626 x 10-³⁴ Js)

c = 2.998 × 10⁸ m/s

λ = wavelength (m)

Hence,

The energy of red light:

E = (6.626 x 10-³⁴ x 2.998 × 10⁸) / (660 x 10-⁹)

= 3.01 x 10-¹⁹ J

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The force applied by the breaks on the bus traveling at 26.6m/s will be 34,546 Newtons.

First we have to calculate the negative acceleration applied by the breaks. We know that [tex]v^{2} - u=2as^{2}[/tex], where V is the final velocity, u is initial velocity, s is the displacement and a is the acceleration Therefore, by putting the given values, we get :

⇒(0 x 0)- (26.6 x 26.6)=2 x 47 x a

⇒-[tex]\frac{706.56}{2*47}[/tex]

⇒-7.51

∴ Acceleration applied by the breaks is -7.51 [tex]ms^{2}[/tex]

Now, by F=ma, we can calculate force as we already know the mass of the bus. Therefore,

⇒m x a

⇒4600kg x (-7.51)ms-2

⇒34,546 Newtons will be the answer.

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The quantity of motion that is quantified as the product of mass and velocity is known as momentum and is related to the mass of the moving body. P=mv is the expression for the momentum.

Momentum is a measure of how much an object is moving, whereas velocity is a measure of how fast an object is moving in a certain direction. Velocity is one of the components of momentum, which is defined as the item's mass multiplied by the speed of the object.

A mathematical formula states that an object's momentum is equal to its mass times its velocity. Mass times velocity equals momentum.

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The number of rubber bands that will cause an object with half the mass to accelerate six times as quickly is 6.

Newton's second law of motion is a quantitative depiction of the progressions that a power can create on the movement of a body. It expresses that the time pace of progress of the energy of a body is equivalent in both greatness and bearing to the power forced on it. The force of a body is equivalent to the result of its mass and its speed.

So,we have given some of parameters like,

The force applied to the object by the two rubber bands, according to newton second law of motion is

F = ma

2 = ma--------(eq1)

When the mass of the object is halved, the number of rubber bands required is calculated as;

2/ma=n/(m/2)×6a

=>2/ma=2n/6ma

=>n=(2/ma)×(6ma/2)

=>n=6

Hence,6 rubber bands will be needed.

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(Complete question) is:

Two rubber bands cause an object to accelerate with acceleration a. How many rubber bands are needed to cause an object with half the mass to accelerate six times as quickly?

A system of objects that are not moving with respect to one another frame of reference. A frame of reference is a set of objects that are not moving relative to each other. It is used to define the position and motion of objects in space.

This is a basic concept in physics and is used to provide a point of reference for measuring and comparing the motion of objects. For example, when measuring the motion of a car in terms of distance and time, the starting position of the car is considered the reference point, and the motion of the car is measured relative to that point.

The frame of reference is also used when measuring the motion of objects in a rotating system, such as the planets in the solar system. In this case, the center of the system is the reference point and the motion of the planets is measured relative to it. Understanding how frames of reference work are important for understanding the laws of motion and the principles of mechanics.

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She puts her skis in with less pressure because her skis have a larger surface area than her shoes do. Thus, Ingrid doesn't need to ski to travel across the snow.

The pressure on the snow is reduced by the size of the skis. The pressure on the snow is lessened by the larger surface area of skis. This prevents the skis from burying themselves too deeply in the snow.

Pressure is defined as the force perpendicularly applied to an object's surface divided by the area across which it is distributed. Gauge pressure is the pressure in relation to the air pressure outside. To express pressure, various units are employed.

Ingrid can move over the snow without skiing because there is less pressure when she puts her skis on compared to her shoes.

The question is incomplete. The complete question is 'Ingrid lives in a cold country that sometimes gets lots of snow. When that happens , people can enjoy the sport of skiing. Ingrid goes outside to see if the snow is fit for skiing. She sinks into the snow , but when she puts her skis in, she can move over the snow without skiing. Why?'

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a) To find the speed of the signal in water, we can use the equation:

Speed = Wavelength x Frequency

Where Wavelength is given as 1.5 mm and Frequency is given as 1 x 10^6 Hz.

Speed = 1.5 x 10^-3 m x 10^6 Hz = 1.5 x 10^3 m/s

So the speed of the signal in water is 1.5 x 10^3 m/s

b) To find the period in water, we can use the equation:

Period = 1 / Frequency

Where Frequency is given as 1 x 10^6 Hz

Period = 1 / (1 x 10^6) s = 1 x 10^-6 s = 1 microsecond

So the period of the signal in water is 1 microsecond

c) The speed of sound in air is approximately 343 m/s. Since the frequency of the signal remains constant and the speed of sound in air is different than the speed of sound in water, the wavelength of the signal will also be different. However, since the period is inversely proportional to the frequency and is independent of the medium, the period of the signal in air will be the same as in water, which is 1 microsecond.

Mass is a better measure of the amount of matter than weight is because: C) mass is independent of location. Therefore, option C is the correct answer.

The mass of an object is a measure of how much object it contains. The kilogram (kg) is the fundamental SI ( International System of Units) unit of mass. On the other hand, weight is a unit of force equal to the gravitational pull on an object. The terms mass and weight are frequently confused. However, the main distinction between the two is their reliance on location. 

The weight of an object is dependent on its location, whereas its mass is independent of its location. For example, the gravitational force on the moon is approximately one-sixth than the gravitational force on Earth. As a result, an object will weigh six times more on Earth than it will on the moon. On the other hand, mass does not change with location because it is determined solely by the amount of matter present in an object. Therefore, the mass of an object on the moon and on Earth is the same.

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The gravitational field strength of the Earth is 9.8 N/kg. Accordingly, an item will experience 9.8 N of force for every kg of mass. The weight of an object is smaller if the gravitational field is weaker.

Newtons per kilogram (N/kg) are used to measure the gravitational field strength (g). At or near the surface, the gravitational field strength of the Earth is 10 N/kg. This implies that an item will experience 10 N of force for every kilogram of mass.

Strengths of the gravitational fields on Earth and the Moon Gravity is the cause of weight. The Earth's gravitational field is 10 N/kg strong (10 newtons per kilogram). In other words, a force of 10 N would pull a 1 kilogram object in the direction of the Earth's center. Such pressures are perceived by us as weight.

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The kinetic energy for an 10 kg object at a 5 m/s speed is 125.

Since mass and kinetic energy have a linear relationship on a graph, if an object's mass increases, so too will its kinetic energy. The object's speed is v. The relationship mentioned above demonstrates how an object's kinetic energy is directly proportional to the sum of its mass and velocity.

It's possible that the relationship between kinetic energy and speed means that as an object moves faster, its kinetic energy also rises. Kinetic energy and speed are related in a nonlinear (square) proportional manner (KE ∝ v2), where: 1. As an object's speed doubles, its kinetic energy grows fourfold. 2. As the speed of the object is halved, the kinetic energy falls by a factor of four.

K.E = 1/2 *m *v^2

K.E = 0.5*(10)*(5^2)

K.E= 125

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The distance the springs need to bring the car to a stop can be calculated using the equation for the potential energy of an object at a height, which is:

PE = mgh

where m is the mass of the object, g is the acceleration due to gravity (9.8 m/s^2), and h is the height.

In this case, the car has a mass of 1,836 kg and is at a height of 88.6 meters. So the potential energy of the car at the top of the roller coaster is:

PE = 1,836 kg * 9.8 m/s^2 * 88.6 m = 1.5*10^5 J

Next, we need to find the work done by the spring. Work can be calculated using the equation

W = 1/2 * kx^2

where k is the spring constant (100,000 N/m) and x is the compression distance of the spring.

Since the work done by the spring is equal to the potential energy of the car, we can set the two equations equal to each other and solve for x (the compression distance of the spring):

1/2 * kx^2 = 1.510^5 J

x = sqrt(2 * 1.510^5 J / 100,000 N/m)

x = sqrt(30000/100000)

x = 0.173 m

Therefore, the spring needs a distance of 0.173 m to bring the car to a stop.

The father of physics in Pakistan is Professor Dr. Abdus Salam, who was a Nobel Laureate in Physics in 1979 for his contributions to the field of Theoretical Physics. He was also the first Pakistani to receive a Nobel Prize in any field.  

Born in 1926 in Jhang, Punjab, Pakistan, Dr. Salam earned his B.Sc. in Mathematics and Physics at Government College, Lahore, followed by a Ph.D. in Mathematics at Cambridge University in 1951. He then held numerous academic posts in the UK, including at Imperial College London, the University of Oxford, the University of London, and King's College London.  In 1957, Dr. Salam returned to Pakistan and founded the Theoretical Physics Group at the University of Punjab.

In addition to his academic career, Dr. Salam was also a strong advocate for the development of science and technology in Pakistan. He was instrumental in establishing the Pakistani Academy of Science, the National Centre for Physics, and the International Centre for Theoretical Physics in Trieste, Italy.

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The torque multiplication ratio of a basic torque converter would be around 2.5:1. The most important thing to keep in mind is that all torque converters which are in proper working order increase torque while initiating initial acceleration.

The moment the vehicle first begins to move, the torque multiplier reaches its maximum. The torque multiplication falls off as speed rises. Torque multiplication virtually disappears as the impeller as well as turbine speeds become close to one another.

Force times distance, or T2L2M, would be the dimension of torque. The official SI literature advises using the unit newton-meter (Nm) as well as don't ever the joule, despite the fact that these fundamental dimensions were identical to those used for energy and work. The appropriate abbreviation for the newton meter is Nm.

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Since we're measuring in football fields, I assume the 100 different people are in America. Since, the people aren't stripped of their possessions before this match between a rabid gorilla with no enhancement. And "winning" is consider overcoming or neutralizing an obstacle.

The easy answer is the person with a conceal carry gun/weapon wins.

But that is too simple, lets break it down: the fight is with a 500lb rabid gorilla who is 12x stronger than an average man with canine teeth that can bite up to 1,300 pounds per square inch. The gorilla has bones 3x stronger than a human, thick fur covering its back, and will concentrate their fight on one person, unless distracted. An average person weights around 180lb and most will attempt to flee the rampaging gorilla. Since fighting barehanded is a death sentence, those people who attempt to engage the gorilla 1v1 will perish. The Gorilla will be too strong and tough for anyone deal real physical damage with their bare hands. The best strategy will be to blind the gorilla by poking it's eyes and choking the gorilla by stuffing its nose/throat with clothes/dirt/whatever, but that means getting close and possibly become a sacrifice. Since humans are smarter and will use tools to their advantage, enough people will form the idea described above and some of the 100 contestant will survive with bruises, broken bones, missing limbs, torn flesh, or all of the above.

But ultimately, the gorilla will be defeated.

Give this solution a 5 star to help future contestants.

Answer: 2 J

Explanation: Work is defined as the energy exerted by an object when a force acts on it. The formula to find the work is

W = F .d

where, F = force applied

d = displacement

In the given question,

F = 20 N

d = 0.1 m

Hence, Work done, W = F.d

= 20 x 0.1

= 2 Nm

= 2 J

The law of inertia is about the tendency of any object to remains in state of motion until and unless an external force is applied to it.

The law of inertia states that any object remains in its state of motion, (either in rest or in motion)  until and unless an external unbalanced force is applied to it. For example if a car is travelling at a constant speed then it will continue to remain in this state for ever. But practically it comes to at rest state after covering some distance. This is due to the opposite force of friction working between the tires of the car and the road surface.

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The energy of the ball is transformed into heat during the contact. As there is no more energy imparted to the ball, it returns with less kinetic energy and is unable to rise as high.

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Momentum is defined as the product of mass and velocity units. We can use the simple formula P=mv to calculate momentum, where P is the momentum.

It is measured by "mass velocity," because momentum depends on velocity, and it also depends on the direction of the body's motion. Momentum is a vector quantity because velocity is a vector and mass is a scalar quantity. Momentum equals mass multiplied by velocity. Momentum is defined as "mass moving." Because all objects have mass, if an object moves, it has momentum - its mass is in motion. Momentum is the amount of motion of a moving body, calculated as the product of its mass and velocity. Its formula is mass velocity.

Here,

The product of mass and velocity units is defined as momentum. To calculate momentum, we can use the simple formula P=mv, where P is the momentum.

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Every object falling freely accelerates at roughly the same rate near the surface of the earth. A g signifies this acceleration. The earth's center is where it is headed downward.

Constant g = 9.8 m/s^2 downward acceleration is experienced by objects in free fall. Newton's second law of motion, Force = Mass * Acceleration, can be used to describe the motion of an object falling (a).

We can use a little mathematics to find the object's acceleration as a function of the object's mass and the net external force (a = F / m). What is meant by acceleration: a measure of how quickly a speed changes over time. Because it has both a magnitude and a direction, acceleration is a vector quantity.

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Answer:

When you kick a football and it moves from one place to another

Explanation:

This means that the unbalanced force troops are acting upon it. The ball moves from one place to another after it's kicked. This is an example of an unbalanced force

Answer:If there are four pinholes, each gives an individual image which then overlaps to result in the final image. The final image will not be coherent and clear.Furthermore, a 1cm hole is too big to be used as a pinhole. One of the main criteria of the pinhole camera is that the hole should be very small to provide infinite field depth. Thus, a 1cm hole reduces the sharpness of the image.

Explanation:

To calculate the distance in meters, we multiply the number of steps (120) by the length of each step (0.7 m). This gives us the total distance in meters (84 m).

The length of an answer would depend on the question being asked. If the question requires an answer that is 100 words, then the length of the answer should be 100 words. To ensure the answer is plagiarism-free, it is important to cite any sources that are used to provide information or facts within the answer. Additionally, any ideas, words, or phrases used from another source must be given proper attribution.

120 steps x 0.7 m/step = 84 m

Explanation: To calculate the distance in meters, we multiply the number of steps (120) by the length of each step (0.7 m). This gives us the total distance in meters (84 m).

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An X-ray tube used for cancer therapy operates at 38 Mv with a beam current of 73 mA striking a metal target. Calculate the power of this beam.

What Are Metals Made up of? Metals are made up of atomic materials such as electrons, neutrons, and protons. Atoms of different elements can be distinguished from one another by the number of protons they contain. Metals comprise about 25% of the earth's crust.

Non-metals are natural materials that do not produce heat or electricity and that are structurally brittle (can not be easily rolling, moulding, extruding or pressing). Hydrogen, carbon, nitrogen, oxygen, phosphorus, arsenic and selenium are the non-metallic elements in the periodic table.

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A metal target is struck by a cancer therapy X-ray tube operating at 38 Mv and 73 mA of beam current. Determine the beam's power.

What Elements Are Found in Metals? Metals are made up of atomic building blocks such as quarks, neutrons, and protons. An atom may be distinguished from a particle of a different element by the number of protons it contains. Metals make up around 25% of something like the upper mantle.

Natural non-metal compounds are brittle and electrically and thermally reactive (can not be easily rolling, moulding, extruding or pressing). The yearly table includes non-metallic elements such as gas, methane, nitrogen, air, calcium, arsenic, and selenium.

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