How fast is a 0.50 kg ball moving if it's kinetic energy is 400 j

"If the darts are thrown at the same speed then (B) Projectile that travels along trajectory B was projected earlier and (C) Second dart must be projected at angle, such that 0 + 0,8 = 90° is correct."

Initial speed of dart A = u'

Angle of dart A = θ'

Initial speed of dart B = u''

Angle of dart B = θ''

Both darts start out at the same speed,

Thus, u' = u'' = u

The darts are launched one at a time from the same location A, but not simultaneously. However, they cover the same horizontal distance and arrive at B simultaneously.

Since both darts' horizontal ranges are equal,

= [ u²sin(2θ') / g ] =  [ u²sin(2θ'') / g ]

= sin(2θ') = sin(2θ'')

Although θ' is not equal to θ", we can infer that θ" >θ' from the figure.

Since both are acute angles,

= sinθ'' > sinθ'

Multiplying both sides by 2u/g, we get,

= [ 2u X sinθ'' / g ] > [ 2u X sinθ' / g ]

so that the two darts' respective trajectories are as follows:

= T'' > T'.

Thus, statement B and C are correct options.

The given question is incomplete. The complete question is '(A) Projectile that travels along trajectory A was projected earlier (B) Projectile that travels along trajectory B was projected earlier. (C) Second dart must be projected at angle e, such that 0 + 0,8 = 90° (D) Second dart must be projected at angle , >, STA​.'

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The ball in place. determine the weight of the ball. Fr = 14920 is the correct answer.

Using the formula of Force

The Donkey is reportedly being dragged by two prospectors using ropes with gives of F1 = 50 lb and F2 = 75 lb and an angle of 25° between the ropes.

Therefore, the Donkey must exert force that is equivalent to and directed in the opposite direction as the force that the rope is applying to the Donkey.

Consequent force is

Fr = [tex]F1^{2}[/tex] + [tex]F2^{2}[/tex] + 2F1F2 Cos (25°)

After entering the values, we obtain

Fr = [tex]50^{2}[/tex] + [tex]75^{2}[/tex] + (2)(50)(75) Cos (25°)

Fr = 2500 + 5625+ (2)(50)(75) (0.906)

Fr = 2500 +5625 + 6795

Fr = 14920

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As they lessen reliance on combustion-based electricity generation, wind and solar energy boost air quality, public health, and greenhouse gas emissions.

Solar energy has advantages as a renewable energy source. The fact that solar energy is a completely renewable energy source is the most significant of all the advantages of solar panels. Reduces electricity costs and has many uses. Costs of maintenance are low.

A clean, emission-free, and sustainable energy source is home solar power. Home solar energy, as opposed to fossil fuels like coal and natural gas, doesn't emit hazardous pollutants or greenhouse gases like carbon dioxide into the air and water supplies.

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In order to find out which substance would raise in temperature most quickly, Mr. Chang's class conducted a scientific experiment outside in the sunlight using three different substances.

If particles of each substance were permitted to sit in the sun for 10 minutes, how would their motion be described? B. Physical alterations are non-chemical changes that are made to an item or substance. They alter an object's physical characteristics, such as its size, color, texture, volume, or density. To find out more about the science underlying the treat or to find some more at-home experiments, see the resources listed below. Just keep in mind that science is best when it is shared, so tell your friends about your experiment.

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The velocity of a body change from vi to 30m/s in 20econd if the rate of change of velocity is 4m/s, initial velocity is -50 m/s.

To find the initial velocity, vi, of a body that undergoes a change in velocity, you can use the formula:

vi = vf - at

where vi is the initial velocity, vf is the final velocity, a is the acceleration (rate of change of velocity), and t is the time over which the acceleration occurs.

In this case, you are given that the final velocity is 30 m/s, the acceleration is 4 m/s^2, and the time is 20 seconds. Plugging these values into the formula gives:

vi = 30 m/s - 4 m/s^2 * 20 s

vi = 30 m/s - 80 m/s

vi = -50 m/s

Therefore, the initial velocity of the body is -50 m/s.

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2​​=2×9.8(48.6)2​=121m​The maximum displacement above pad is given by '

ymax=y1+y2=525+121=646  m The velocity just before crashing is given by vA22=vC2+2gymax  ⇒(3) By substitution in (2) get that vA2=2×9.8×646≈113  m/s vA2​​=2×9.8×646 ≈113m/s​ the maximum height this rocket will reach above the launc is ymax=646M.

Whether an object is moving or not, gravity still exerts a pull on it.In real life, an object's gravitational pull does not vary considerably when it ascends above the Earth.

An object is considered to be in terminal decline when gravity is the only force affecting it.9.8 m/s is the acceleration caused by gravity.

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The fact that CO2 is a greenhouse gas is important. This implies that CO2 traps heat near to Earth in the atmosphere. It enables our planet to retain part of the heat from the Sun so that not all of the energy escapes back into space.

Carbon dioxide is a crucial greenhouse gas that helps keep heat in our atmosphere. Without it, our planet would be too cold to support life. But other aspects of Earth's climate are being impacted by an increase in average global temperatures spurred on by growing CO2 levels in our atmosphere.

All known biological systems depend on carbon, and life would not be possible without it. There is carbon in the form of hydrocarbons, such as fossil fuel, methane gas, and crude oil, that are not found in food or wood. Since carbon fibers are strong, lightweight, and long-lasting materials, they have a variety of purposes.

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Increasing the spring constant k, increasing the distance the spring is compressed, decreasing the mass of the ball will increase the maximum height reached by the ball.

What is meant by maximum height reached by the object?

An object thrown vertically up will rise to its maximum height in direct proportion to its initial velocity, u.

First, as compression distance and spring constant k are raised while mass is decreased, maximum height will increase. As a result, we can select the best course of action by first raising the spring constant. Next, we have the option of extending the distance. Lastly, the spring is compressed, reducing the ball's bulk.

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Infectious diseases, deficient diseases, hereditary diseases (covering both genetic disorders and non-genetic hereditary diseases), and physiological diseases are the four primary categories of disease.

Asthma. Chronic pulmonary condition known as asthma is characterized by episodes of airway blockage and narrowing that result in wheezing, coughing, chest tightness, and shortness of breath. Autoimmune Conditions. ALPS, or Autoimmune Lymphoproliferative Syndrome Cholera. Coronaviruses. The dengue virus.

Each year, infectious diseases afflict billions of individuals worldwide. These infectious diseases are the five most prevalent, say the WHO and CDC. Infectious diseases are illnesses brought on by pathogens—dangerous organisms—that enter your body from the outside.

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Hubble's law expresses a relationship between the distance of a galaxy and the speed at which it is moving away from us. This law says that galaxy's velocity is directly proportional to its distance.

This law gives an important insight into the state of the universe. If the universe were static, there would not be a direct relation between velocity and distance. This law is the first observational basis for the expansion of the universe.

Direct relation means that the farther they are moving from the earth, the higher their speed is. This law supports the Big Bang theory of the origin of the universe.

The law can be expressed in equation form

V = [tex]H_{o[/tex]D

Where,

V = velocity of galaxy

[tex]H_{o[/tex] = Hubble's constant

D = distance from earth

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Radio waves, microwaves, infared waves, visible light, ultra-violet, x-Rays and  gamma rays are the 7 types of electromagnetic waves from left to right.

The electromagnetic spectrum's longest wavelengths are found in radio waves, a kind of electromagnetic radiation.

Wavelengths of electromagnetic radiation, which include microwaves, typically range from one meter to one millimeter.

Longer wavelengths than visible light characterize infrared electromagnetic energy, also referred to as infrared light.

The area of the electromagnetic spectrum that is visible to the human eye is referred to as the visible spectrum.

A type of electromagnetic radiation with a shorter wavelength than visible light is ultraviolet radiation (UV).

A penetrating kind of high-energy electromagnetic radiation is an X-ray or, much less frequently, an X-radiation.

Sharp electromagnetic radiation waves called gamma rays, also referred to as gamma radiation, are created when atomic nuclei break down radioactively.

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Option C 100 N is correct. Given that no element of the system is in motion, a person pulling with 100 N of force at either end of the rope is met with a 100 N tension in the rope.

Because the rope is subjected to the same pulling force on both sides, it is in a state of static equilibrium (i.e. it is at rest consequently has a net force of zero). Tension on a rope will be zero if it is pulled from its ends by two opposing forces of 100N each since both forces have identical magnitude but operate in different directions on the same body and cancel each other out.

The complete question is- Two people are pulling on the ends of a rope. Each person pulls with a force of 100 N. The tension in the rope is:

A 0 N

B 50 N

C 100 N

D 141 N

E 200 N

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Answer:2.15 (rounded to 2 decimal place)

Explanation:Mass = 28g

Volume =?

Density = 13 g/ml

Volume = Mass/Density

Volume = 28/13
volume= 2.15384615

Answer:

stress = 13000000 N/m or Pa

Strain = 6x10^-5

Explanation:

Radius - d/2

Radius = 2 /2

Radius = 1 mm

Stress = F/A

stress = F / (πr^2)

Stress  = 40 / (π(1 / 1000)^2)

Stress = 12732395 ≈ 13000000 N/m or Pa

Strain = Extension / Original length

Strain = (0.24 / 1000) / 4

Strain = 6x10^-5

I hope my answer helps you.

The ratio of the mass of the objects which are hung in the vertical spring is 9

The frequency of the spring with mass m₁ = 12 Hz

The frequency of the spring with the mass m₂ = 4 Hz

The ratio of the mass can be found using the formula,

                    [tex]\displaystyle f = \frac{1}{2 \pi} \sqrt{\frac{k}{m} }[/tex]

where f is the frequency of the spring

         k is the spring constant

         m is the mass

Then, the ratio of masses is

               m₂ / m₁ = f₁² / f₂²

Let us substitute the known values in the above equation, we get

              m₂/m₁ = 12² / 4²

                         = 144 / 16

                         = 9

Therefore, the ratio of mass is 9            

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The graph that represents an object being stationary is graph C.

The graph that represents an object only has negative velocity is graph C.

The graph that represents an impossible motion is graph C.

Look at the attachment for the full question. The displacement or changing position from the original position with time can be described by a displacement-time graph. There are

Look at the first problem.

Look at the second problem.

Look at the third problem.

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The majority of an organization's overall greenhouse gas (GHG) emissions frequently come from scope 3 emissions, also known as value chain emissions. Scope 3 emissions are divided into 15 categories by the GHG Protocol.

Greenhouse gas emissions from a corporation that it directly manages. indirect greenhouse gas emissions caused by the electricity or other energy a corporation utilizes. indirect greenhouse gas emissions of a firm that are not covered by Scope 2.

In many industries (and more than 90% in many global corporations, according to CDP reporting), scope 3 emissions, also known as "Value Chain emissions," make up the bulk of total emissions. These emissions are regarded as essential to combating climate change.

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The velocity of the object is  23.24 m/s.

An attribute of an object moving in a circular route is centripetal acceleration. Any object moving in a circle with an acceleration vector pointing in the direction of the circle's center is said to be experiencing centripetal acceleration.

Given that an object is experiencing a centripetal acceleration of 36m/s^2.

Radius of the circle: r = 15 m.

Then, the velocity of the object is = √(36×15) m/s = 23.24 m/s.

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Observations in the X-ray portion of the spectrum are routinely done from the surface of the Earth is a false statement .

As a result, the planet emits the most energy in the infrared region of the electromagnetic spectrum is correct statement .

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An electric current flows through a loop of wire when you move a bar magnet toward it! Faraday's law, which describes this physical process, is the foundation of electric generators. One of the pillars of electromagnetic is the Faraday law.

The flux increases quickly as the magnet approaches the coil and eventually reaches the magnet inside the coil. Magnetic flux begins to decrease through the coil as it moves through it.

Since the intensity of the field lines directing from the front to the back of the loop are becoming stronger as the magnet's north pole approaches the loop, the flux through the loop caused by the magnet's field increases.

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The unit of wavelength depends on the type of wave being described. In the International System of Units (SI), the unit of wavelength is the meter (m). This is the case for most types of waves, including electromagnetic waves (such as light), sound waves, and mechanical waves.

What is wavelength?

Wavelength is the distance between two consecutive points of the same phase on a wave. It is the distance traveled by a wave in one period (the time it takes for the wave to complete one cycle). The wavelength is usually denoted by the Greek letter lambda (λ).

For example, the wavelength of a radio wave might be measured in meters, the wavelength of visible light might be measured in nanometers (nm), and the wavelength of a sound wave might be measured in centimeters (cm).

In some fields of physics, other units of length may be used to express wavelength. For example, in the field of quantum mechanics, the unit of length is often the angstrom (Å), which is equal to 0.1 nanometers (nm).

Therefore, the unit of wavelength varies depending on the type of wave.

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The correct answer is option B,

Delta rays would have the same wavelength as most gamma rays.

The term "delta ray" is commonly used to refer to any rebound particle produced by secondary ionization.

A delta ray is a secondary electron with sufficient energy to escape from the initial radiation beam and trigger more ionization.

J. J. Thomson was the author of the phrase.

Gamma radiation, commonly referred to as gamma rays, are piercing electromagnetic radiation waves that result from the radioactive disintegration of atomic nuclei.

It comprises of electromagnetic waves with the shortest wavelengths, often shorter than X-rays.

Delta rays are by-products of the secondary ionization of molecules.

They are composed of sluggish electrons and other ionizing radiation-produced particles and have extremely little penetration strength.

Ionizing radiation causes particles to discharge their atoms, creating delta rays as a result.

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The complete question may be like this:

Imagine a scientist detects an electromagnetic wave with a higher frequency than that of most gamma-ray waves. Scientist calls these waves delta rays. Which of these statements would be true of delta rays?

A.) Delta rays would have more energy than most gamma rays do.

B.) Delta rays would have the same wavelength as most gamma rays.

C.) Delta rays would have a longer wavelength than most gamma rays have.

D.) Delta rays would travel faster than most gamma rays.

It turns out that I stands for the German word for intensity, intensität.And if you look about it, the main aspect of stream or flow is intensity.

Current is typically represented by the letter I, which comes from the French term intensité du courant (current intensity).The term "current" is frequently used to refer to current intensity.André-Marie Ampère, who gave the electric current unit its name, formulated his force law using the I symbol (1820).

Ohm's Law Formula:V = IR is the formula, where V seems to be the voltage applied from across conductor, I is indeed the current that flows through it, and R represents the resistance the conductor offers to the current flow.

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The ground-state electron configuration of chromium is [Ar] 4s¹ 3d⁵.

The electronic configuration is described as the arrangement of electrons in the orbitals around an atomic nucleus.

The given electronic configuration is [Ar] 4s¹ 3d⁵.

The atomic number of [Ar] is 18.

It is given that 4s has 1 free electron and 3d has 5 free electrons.

So, the given element has 18 + 1 + 5 = 24

The element with 24 electrons is said to be chromium.

The nearest inert substance with the atomic number 18 is argon.

The chromium atom has 6 unpaired electrons.( 1 in 4s orbital and 5 in 3d orbital)

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if Ezra reduced the length of the rope to 0.25 meters and  rotational speed is held constant, There is a change of 3.14 m/sec in the velocity when length of rope is reduced from 0.50 to 0.25 m.

The no. of revolutions made by a rotating object in a given defined time is termed as rotational speed.

Given:

initially length of rope i.e. R = 0.50m

2 rotations per second = 1 rotation =0.5 sec= T

now after changing ropes length R=0.25 m

Initially velocity of the ball rotating on R =0.50m

⇒v=2πR/T

⇒v=2*3.14*0.50/0.5

⇒v=6.28 m/sec

6.28 m/sec is the velocity of the ball rotating on R =0.50m.

Now to find the velocity of the ball rotating on R =0.25m we use the following eq.

⇒v=2πR/T

⇒v=2*3.14*0.25/0.5

⇒v=3.14 m/sec

3.14 m/sec is the velocity of the ball rotating on R =0.25m

Hence, there is a change of 3.14 m/sec in the velocity when length of rope is reduced from 0.50 to 0.25 m.

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Amine classification: Primary, Secondary Amines, which are derivatives of ammonia, are categorized as primary (1°), secondary (2°), and tertiary (3°) based on how many hydrogen atoms in the ammonia molecule have been replaced by alkyl or aryl groups.

A primary amine is created when one alkyl group replaces one hydrogen atom in NH 3. primary, secondary, tertiary, or quaternary amine as 1o, 2o, 3o, or 4° (CH3)4N+ .

(C₂H₅)CHNH₂ N atom is directly connected with only one C atom (i.e. one alkyl group) So, it is a primary amine.

An intermolecular interaction involves primary and secondary amines. This is because the nitrogen in one molecule and the hydrogen in another molecule form a hydrogen bond. This intermolecular interaction is more prevalent in primary amines compared to secondary amines.

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We change [V 1] to 115 V, [V 2] to 110 V, and [P 1] to 500 W in the equation above. As a result, the output power will decline by 8.5%, which will also result in an 8.5% fall in heating output.

A low-wattage 500W heater can effectively heat places up to 57 square feet and offers a heating output of 1706 BTU. The smallest 200W heater, which can heat places up to 23 square feet, has a heating output of 682 BTU.

Since they convert all of the electricity they consume into heat, electric heaters are all believed to be 100% efficient, but this does not imply that their operating costs are low.

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An AO is an Authorization Order, which is a document that is used to authorize a traveler to travel. It is typically issued by the travel agency or airline and is used to confirm the traveler's identity and travel plans.

The formula to calculate speed of emitted photoelectron is KE = 1/2mv²

The process through which electrons leave a metal's surface after absorbing electromagnetic radiation is known as the photoelectric effect.

Since photons are the units of light, according to Einstein's theory, when a photon collides with a metal's surface, the full photon's energy is transferred to the electron. A portion of this energy is utilized to free the electron from the metal atom's hold, while the remainder is transferred as kinetic energy to the ejected electron.

Three crucial aspects of the photoelectric effect are not explicable by classical physics: (1) the lack of a lag time; (2) the independence of the photoelectrons' kinetic energy from the strength of the incident radiation; and (3) the presence of a cut-off frequency.

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