What is the maximum height to which a motor

having a power rating of 20. 4 watts can lift a

5. 00-kilogram stone vertically in 10. 0 seconds?

(1) 0. 0416 m (3) 4. 16 m

(2) 0. 408 m (4) 40. 8 m

The velocity and direction of the 0.7 kg cart when released = 15 m/s to the right.

The law of conservation of momentum explains that if two objects collide, the magnitude of the decrease in momentum on one object will be equal to the magnitude of the increase in momentum on the other object. This means, the total momentum of the system of objects before the collision is always equal to the total momentum of the system of objects after the collision.

The law of conservation of momentum can be written as follows:

m₁v₁ + m₂v₂ = (m₁v₁)' + (m₂v₂)'

We have,

Mass of the first cart = 1.5 kg ⇒m₁

Mass of the second cart = 0.7 ⇒m₂

The velocity of the 1.5 kg cart = 7 m/s ⇒ v₁'

It moves to the left, so it negative ⇒ -7 m/s

The carts initially at rest, so v₁ = v₂ = 0

And,

(m₁ + m₂) v₂ = (m₁v₁)' + (m₂v₂)'

(1.5 + 0.7) (0) = (1.5) (-7) + (0.7) v₂'

0 = (-10.5) + 0.7 v₂'

0.7 v₂' = 10.5

v₂' = 15 m/s

And 15 m/s ⇒ it is positive, the direction is to the right.

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The size and aperture of the telescopes determine its ability to gather light

and reveal details.

A) Observatory X can detect dimmer stars and Observatory Y reveals more

details.

Reasons:

The benefits of using several small telescopes included the production

high resolution images of bright objects such as binary stars that reveal

more details similar to a telescope with a very large aperture, with a

process known as interferometry, through which a star's diameter can be

determined.

The benefit of a large telescope is its ability to gather light from a source,

thereby making possible to detect a dim light source, such as dimmer

stars.

Therefore;

The single large telescope in observatory X can detect dimmer stars while

the interferometer consisting of five 10-meter telescopes, spread out over a

region 100 meters across can see more detail in its images.

The correct option is; A) Observatory X can detect dimmer stars and

Observatory Y reveals more details.

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Question options:

A) Observatory X can detect dimmer stars and Observatory Y reveals more

details.

B) Observatory Y can detect dimmer stars and Observatory X reveals more

details.

C) Observatory X both detect dimmer stars and reveals more details

D) Observatory Y both detect dimmer stars and reveals more details

Answer:

Sagittarius A

At its center, surrounded by 200-400 billion stars and undetectable to the human eye and by direct measurements, lies a supermassive black hole called Sagittarius A*, or Sgr A* for short. The Milky Way has the shape of a spiral and rotates around its center, with long curling arms surrounding a slightly bulging disk.

Explanation:

Answer:

black hole is the answer

Explanation:

Answer:

they a giant ball of gases, so the answer is they have very large gas masses

Explanation:

Answer:

get G OA S S E d

Explanation:

d gasses are large

Answer:

P = 2 pi (L / g)^1/2

Let 1 represent earth and 2 the moon

P2^2 / P1 ^2 = L2 g1 / (L1 g2)       dividing equations

L2 = (P2 / P1)^2 * g2 / g1 * L1

L2 = 1 * 1.62 / 9.80 * 1.9 = .314 m

When a cannonball is fired from a cannon, the momentum of the recoiling cannon is momentarily option 4) equal and opposite to the momentum of the fired cannonball.

This is due to the law of conservation of momentum, which states that the total momentum of a closed system remains constant. In this case, the momentum of the cannonball and the momentum of the cannon are equal in magnitude but opposite in direction, resulting in a net momentum of zero.

The law of conservation of momentum states that unless an outside force acts on a system, its overall momentum stays constant. The cannon and the cannonball make up the mechanism when a cannon fires a cannonball. When a cannonball is fired, it gains momentum in one direction, and the cannon recoils with an equal and opposite momentum in the other direction. As a result, the right response is 4) equal to and in the opposite direction of the cannonball's momentum. The third law of motion of Newton, which asserts that there is an equal and opposite reaction to every action, describes this as the principle of action and reaction.

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Explanation:

Speed =distance travelled/time taken

False. While there are known long-term effects of radiation exposure, the specific effects on an individual can vary depending on factors such as the type and amount of radiation exposure, age, health status, and genetics.

Some known long-term effects of radiation exposure include an increased risk of cancer, genetic mutations, and damage to organs such as the thyroid and reproductive organs. However, the severity and timing of these effects can vary widely among individuals. Additionally, exposure to radiation can also have immediate effects such as skin burns and radiation sickness. It is important to note that the long-term effects of radiation exposure can be reduced through measures such as limiting exposure time, using protective equipment, and following proper safety protocols.
b. False

Long-term effects of radiation on an individual are not entirely predictable. While it is true that exposure to high levels of radiation can lead to an increased risk of certain health issues such as cancer and genetic mutations, the specific outcome for an individual depends on various factors. These factors include the type and amount of radiation, duration of exposure, age, and individual genetic makeup. Additionally, the latent period between radiation exposure and the onset of health issues can vary significantly, making it challenging to predict the exact long-term effects for a particular individual.

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Answer:

ZAMN

Explanation:

Answer:

Vacculoes, vesicles

Explanation:

Organelles and other structures within the cells have vesicles collectively referred to as the endo-membrane system. The Lysosomes pack up the substances, and the vesicles go through the porsous membrame and secrete the substances.

Given,

The work done by the engine, W=23 kJ

The time it takes for the engine to do the given amount of the work, t=1800 s

The power is the time rate of change of transfer of energy or the energy transferred in unit time. Thus the power supplied by the engine can be calculated as the ratio of the work done to the time.

Thus the power supplied by the engine is given by,

On substituting the known values,

Thus the power supplied by the engine is 12.78 W.

The current through the 2Ω resistor is 9.5A

The terminal voltage is 10.8 V

a) The voltage V across 8 Ω resistor is V = I*R = 8*0.5 = 4V

the current through 16Ω resistor is then I = V/R = 4/16 = 0.25 A

the current through 20Ω resistor is then I = current through 8Ω resistor + current through 16Ω resistor = 0.75 A

voltage across 20Ω is V = I*R = 0.75*20 = 15 V

the source voltage is Vs = V8 + V20 = 4+15 = 19 V

therefore the current through 2Ω resistor is

I = V/R = 19/2 = 9.5 A

b) The terminal voltage is

Vterminal = VR = I*R = 0.450*24 = 10.8 V

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The momentum flow rate through the pipe carrying liquid ammonia is 1 × \(10^6\) kg·m/s.

The flow rate of momentum (Ṁ) through the pipe can be calculated by multiplying the mass flow rate (ṁ) by the velocity (v). The speed can be determined using the equation v = ṁ / (ρA), where ρ is the density of the liquid ammonia and A is the pipe's cross-sectional area.

Given:

ṁ = 100 kg/s

A = 0.01 m²

Assuming the density (ρ) of liquid ammonia is 700 kg/m³, we can calculate the velocity (v):

v = ṁ / (ρA)

v = 100 kg/s / (700 kg/m³ × 0.01 m²)

v = 10000 m/s

Now, we can calculate the flow rate of momentum (Ṁ):

Ṁ = ṁv

Ṁ = 100 kg/s × 10000 m/s

Ṁ = 1 × \(10^6\) kg·m/s

Therefore, the momentum flow rate through the pipe is 1 × \(10^6\) kg·m/s.

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Answer:

Metal

Explanation:

Just answered on Apex

Metal is the material will heat up the most quickly if placed near a heat source. Option D is correct.

The movement of energy from a hot to a cold item is characterized as heat. Heat energy flows from a hot material to a cold one.

This occurs because faster-vibrating molecules transmit their energy to slower-vibrating ones. Heat content is another name for vibrational energy.

It is hot or chilly depending on how much heat is there in the body. The body will be hotter as the heat content increases. The movement of energy from a hot to a cold item is characterized as heat.

The heat flow in the material is due to the free electrons. In the metal, no of free electron is highest. Metal is the material will heat up the most quickly if placed near a heat source.

Hence, option D is correct.

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Answer:

one object exerts a force on a second object

Explanation:

i just took this

Magnetic field is stronger at the poles whereas weaker at the center.

The magnetic field on the bar magnet is strongest at the poles because the field lines are most concentrated at the poles while on the other hand, the magnetic field is weaker in the central part of magnet.

Magnetic field has equal amount of strength at both the poles so in my opinion as well as scientific point of view, magnet field is stronger at the poles and weaker at the center of magnet.

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Experimental proof of the validity of a wave equation involves conducting experiments that involve waves in the relevant system and comparing the experimental results with the predictions of the equation.

∇²ψ = (1/c²) ∂²ψ/∂t², where ∇² is the Laplacian operator, ψ is the wave function, c is the wave speed, and ∂²/∂t² denotes the second partial derivative with respect to time.

The Universal Wave Equation is a theoretical framework that describes the behavior of waves in various physical systems. However, since the concept of the "Universal Wave Equation" is not a well-defined term in the scientific literature, it is unclear what specific equation is being referred to.

There are numerous wave equations that govern different types of waves, such as the wave equation in classical mechanics or the Schrödinger equation in quantum mechanics.To validate the validity of a specific wave equation, experimental evidence is typically obtained by conducting experiments that involve wave phenomena in the relevant domain.

For instance, to validate the wave equation in classical mechanics, experiments involving waves on a string, sound waves in air, or water waves in a tank can be performed.

By measuring and analyzing the properties of these waves, such as their speed, frequency, and wavelength, scientists can compare the experimental results with the predictions of the wave equation.However, without specifying the particular wave equation referred to as the "Universal Wave Equation," it is not possible to provide a more detailed experimental validation in this context.

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When an astronomer involved in a research project says he is going to look at the observatory's plate collection, he will be looking at a series of glass plates, with light-sensitive chemicals on them, on which the appearance of the sky was recorded. Therefore, the correct answer is E.

An observatory is a building or complex that is dedicated to observing celestial objects. It is also a location used for observing terrestrial events like weather phenomena. Some observatories are used for scientific research while others are used for education purposes. There are a number of instruments used for observing the celestial bodies in the observatory such as telescopes, cameras, and spectroscopes.

Astronomers use photographic plates to record astronomical data. These photographic plates are made from glass and coated with a layer of silver bromide emulsion. After being exposed to light for a particular period, the photographic plate is developed in a chemical solution to create a photographic image. A plate collection is simply a collection of such plates. These plates are used to record the appearance of the sky or particular celestial objects, and they can be studied later for research or educational purposes.

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Answer:

Measurement is inevitable because in every single thing we do we measure.for instance, if you are a family of four,the food prepared will be less than the food prepared for a family of about 15 people.this is measurement.if not so,the food prepared will go waste.again, the drugs prescribed by the doctor is measured to avoid over dose or under dose of medication.this can be harmful to ones health

the threshold velocity  \(v_{threshold (water) }\)(i.e., the minimum velocity) for creating Cherenkov light from a charged particle as it travels through water is  (0.751) c.

The lowest fluid velocity that, in the case of a spinner flowmeter, would be necessary to start the spinner rotating. Due to extra viscous and mechanical factors, the actual fluid velocity needed to begin spinner spinning is a little greater. The spinner response at higher fluid velocities, where it is known to be nearly linear, is extrapolated back to the value that exists when spinner rotation is zero to calculate the threshold velocity.

The threshold velocity (water) for creating Cerenkov light from a charged particle as it travels through water which is given as -

using an equation, we have

\(v_{threshold (water) }\)=\(\frac{ c }{ n} \Rightarrow \frac{3 \times 10^8 }{ 1.33}\)

\(v_{threshold (water) }\)=2.25 \(\times 10^8\)\(\frac{m}{s}\)

\(v_{threshold (water) }\)= (0.751) c

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The temperature at the wave length is 1.06×10 −3 m, microwave region and This is a component of the electromagnetic spectrums' microwave microwave area. The ''afterglow" of the Big Bang is commonly referred to as the Cosmic Microwave Background.

Wien's displacement law (Equation 38.30) describes the relationship between the peak wavelength of light emitted by an ideal radiator and its temperature.

\(T = 2.90 x \ 10^{-3} m. K\)

Substituting T = 2.728 K

\(T = \frac{2.90 x \ 10^{-3} m. K}{2.728 K}\)

\(= 1.06 x \ 10^{-3} m\)

This is part of the microwave microwave area of the electromagnetic spectrum. This ''afterglow" of the Big Bang is commonly referred to as the Cosmic Microwave Background.

The cosmic microwave background radiation (CMB) is the radiation that has been detected from space and is characteristic of an ideal radiator at a temperature of 2.728 Kelvin.

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The following question may be like this:

Radiation has been detected from space that is characteristic of an ideal radiator at T=2.728 K. (This radiation is a relic of the Big Bang at the beginning of the universe.) For this temperature, at what wavelength does the Planck distribution peak? In what part of the electromagnetic spectrum is this wavelength?

Radiation detected from space, characteristic of an ideal radiator at T = 2.728 K, is known as the Cosmic Microwave Background (CMB) radiation. This radiation is a relic of the Big Bang, which marks the beginning of the universe.

CMB radiation permeates the universe and provides valuable insights into the early stages of its development. It is a critical piece of evidence supporting the Big Bang theory, as it demonstrates the uniform distribution of energy and matter in the initial moments following the event. The 2.728 K temperature represents the cooling of the radiation over time, as the universe expanded and aged.

As an ideal radiator, the CMB radiation displays a perfect blackbody spectrum, which is a theoretical construct representing the radiation emitted by a perfectly efficient absorber and emitter of energy. This characteristic implies that the radiation originated from a state of thermal equilibrium, further supporting the notion of a homogeneous and isotropic early universe.

In conclusion, the detection of radiation from space with a temperature of 2.728 K, characteristic of an ideal radiator, provides essential evidence of the Big Bang and the early stages of the universe's formation. The Cosmic Microwave Background radiation serves as a powerful tool for understanding the origins and evolution of our universe.

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Answer:

The mass of the apple is 0.49kg

Explanation:

Potential energy=mgh

P=mgh

6=m×1.22×10

6=12.2m

divide both sides by 12.2

m=6/12.2

m=0.49kg

Answer: no se

Explanation:no se

Answer:

The chemical symbol for sodium carbonate is . The decomposition of sodium carbonate is: The decomposition of sodium bicarbonate, will result in the formation of sodium oxide, and carbon dioxide, . Hence, carbon dioxide, will produce with sodium oxide, on decomposition of

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The plane travels a distance of 325 miles if the airplane travels for 2.5 hours at an average speed of 130 miles per hour. Using the distance formula (d = rt), we can calculate the distance.

To find the distance traveled by the airplane, we can use the distance formula, which is represented as d = rt. In this formula, "d" represents the distance, "r" represents the rate or speed at which the object is traveling, and "t" represents the time taken for the travel.

Given that the airplane travels for 2.5 hours at an average rate of 130 miles per hour, we can substitute these values into the formula. The rate of the airplane is 130 miles per hour, and the time taken is 2.5 hours.

Using the formula, we can calculate the distance traveled as follows:

d = rt

d = 130 mph × 2.5 hours

Multiplying the rate (130 mph) by the time (2.5 hours) gives us:

d = 325 miles

Therefore, the airplane travels a distance of 325 miles during the 2.5 hours of travel at an average rate of 130 miles per hour.

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Answer:8h

Explanation:

Answer: 8 h

Explanation:

I got it right

Answer:

since the charges are of different nature it's a attractive force

Explanation:

magnitude of force=

9*10^9*5*10^-6*3*10^-6/0.04

= 3.375N answer

To find the circumference of a circle, you can use the formula C = 2πr, where C is the circumference and r is the radius of the circle.

Circle 1:

Let's assume the radius of Circle 1 is given as 5 units.

C1 = 2 * 3.14 * 5

C1 ≈ 31.4 units (rounded to the nearest tenth)

Circle 2:

Assuming the radius of Circle 2 is given as 10 units.

C2 = 2 * 3.14 * 10

C2 ≈ 62.8 units (rounded to the nearest tenth)

Remember, the circumference is directly proportional to the radius of the circle. So, if you have the radius, you can use the formula C = 2πr to find the circumference.

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Option B, number 03 who is running at 20 m/s in the eastern direction. Among the given options, number 03 has the same velocity as the soccer player with the ball.

Since the player with the ball is running east at 20 m/s, the opposing player who has the same velocity must also be running at 20 m/s in the eastward direction.

Option B is the only choice that meets these criteria.
The opposing player who has the same velocity as the player with the ball is number 03 who is running at 20 m/s in the eastward direction.

Hence, Among the given options, number 03 has the same velocity as the soccer player with the ball.

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At the time and location where the gauge pressure due to the sound wave is a maximum, the displacement of the air molecules is zero or very close to zero, indicating that they are at their equilibrium positions.

If the gauge pressure due to the sound wave is at a maximum at a particular time and location, it indicates that the air molecules at that same time and place are at their equilibrium positions.

In a sound wave, regions of maximum pressure correspond to compressions, where the air molecules are pushed closer together, and regions of minimum pressure correspond to rarefactions, where the air molecules are spread apart.

At the maximum pressure point, the air molecules have been compressed to their maximum extent, and they are in their equilibrium positions before they start to move back towards their rest positions.

Therefore, at the time and location where the gauge pressure due to the sound wave is a maximum, the displacement of the air molecules is zero or very close to zero, indicating that they are at their equilibrium positions.

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