A rock tied to the end of a string moves in a circle at a constant speed of 2.5 m/s and experiences an acceleration of 4.0 m/s. What is the radius of the
circle of its motion?
O 1.60 m

Answer:

C, cumulus your welcome :D

Answer:

मार्क ASL brainlisessjd

La respuesta correcta es 180 centímetros cúbicos o 180 \(cm^{3}\)

Explicación:

El primer paso para saber cuanto alcohol desaloja el prisma es calcular el volumen total del prisma. El volumen se puede encontrar usando la formula V (Volumen) = B (base) x h (altura). El proceso se muestra a continuación:

V  = B x h

V = 36 \(cm^{2}\) x 10 cm

V= 360 \(cm^{3}\)

Finalmente, el volumen total del prisma debe dividirse en 2 considerando que solo la mitad del prisma fue sumergida y esta mitad equivale al volumen del alcohol desplazado.

360 \(cm^{3}\) ÷ 2 = 180 \(cm^{3}\)  

El volumen de fluido desplazado es de 180 cm^3.

Sabemos que el objeto va a desplazar su propio volumen de fluido. Por lo tanto, necesitamos obtener el volumen del objeto a, este es el volumen del fluido que eventualmente será desplazado por el sólido.

El volumen del sólido es;

V = 36 cm^2 * 10 cm^2 = 360 cm^3

desde que se sumergió a la mitad, volumen de alcohol desplazado = 360 cm^3/2 = 180cm^3

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Answer:

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Answer:

the answer is 173 m/s

Explanation:

the the sound traveled from the dog to the building and back to the dog in 0.5 seconds, every second passes the sound travels 346 m/s but if half a second passes then we divide 346 by 2 and get 173 m/s.

The horizontal distance travelled by the football is 3.1 m.

The angle of projection of the football is calculated as follows;

tan ( θ ) = Vy / Vx

where;

tan ( θ ) = 5 / 3

tan ( θ ) = 1.667

θ = arc tan (1.667)

θ = 59⁰

The resultant velocity of the ball is calculated as follows;

v = √ (Vx² + Vy²)

v = √ (3² + 5²)

v = 5.83 m/s

The horizontal distance travelled by the football is calculated as follows;

x = v² sin(2θ) /g

where;

x = [ (5.83)² sin(2 x 59) /9.8 ]

x = 3.1 m

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Answer:

Downwards

Explanation:

Using Fleming's right hand rule, where the middle finger represents the negative charge moving in the south to north direction, the fore finger represents the magnetic field which points in the east to west direction.

If we are to follow this orientation and place the thumb, middle finger and fore-finger at right angles to each other, the thumb represents the direction of the magnetic force on the charge.

In this case, the magnetic force points downwards after setting the other orientations of the magnetic field and the negative charge's direction.

Answer:

During the evening, the land cools off more quickly than the water. The cooler land cools the air above it, while the warmer water warms the air above it. These differences in air temperature create the convection.

Explanation:

sorry I took forever

If the mixture is thermally isolated from its surroundings, then it, loses thermal energy to the environment outside as it comes to a final temperature. The correct answer is d.

When the sample of lead is placed in the water, heat will flow from the lead to the water until they reach a common final temperature. Since the final temperature will be less than the initial temperature of the lead, heat must have flowed out of the lead into the surroundings, causing the lead to lose thermal energy to the environment outside the system.

Since the mixture is thermally isolated from its surroundings, no thermal energy is exchanged between the system (lead and water) and the environment during the process. However, heat can still flow within the system itself until thermal equilibrium is reached. Option d is correct.

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tTO = 26.8 sis the time needed to take off a plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long.

Time is the ongoing pattern of existence and things that happen in what seems to be an unbreakable succession from the past through the present and into the future. It is a constituent quantity of many measurements that are used to compare the lengths of events or the gaps between them, to compare the sequence of occurrences, and to measure the rates at which certain quantities in the physical world or in conscious experience change. In addition to the three spatial dimensions, time is frequently considered a fourth dimension.

Although time has long been a crucial topic for research in philosophy, theology, and science, no definition of time that is universally applicable and free of circularity has ever been reached by academics. However, a number of different industries and areas, including business, industry, sports, the sciences, and the performing arts, all incorporate.

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Answer:

a i believe

Explanation:

Answer:

Explanation:

We will use the equation F - f = ma, which is a fancy way of stating Newton's 2nd Law.

F = +50.0,

f = -30.0,

m = 7.60 kg. Therefore:

50.0 - 30.0 = 7.60a and

20.0 = 7.60a and

a = 20.0/7.60 so

a = 2.63 m/s/s to the right

Out of the given statements about conductors under electrostatic conditions, option C is true. The electric potential inside a conductor is always zero. This is because in electrostatic conditions, charges on a conductor are in static equilibrium and there is no electric field inside the conductor.

Any excess charge on the conductor resides on its surface, and the electric field inside the conductor is zero. Due to this, the electric potential inside a conductor is constant and equal to zero.

Option A is false as positive work is not required to move a positive charge over the surface of a conductor. This is because the charge on a conductor is free to move, and the electric field inside a conductor is zero.

Option B is false as the charge that is placed on the surface of a conductor may not always spread evenly over the surface. This is because the shape and geometry of the conductor can affect the distribution of charges on its surface.

Option D is false as the electric field at the surface of a conductor is always perpendicular to the surface. This is because if the field were tangent to the surface, there would be a component of the field along the surface, which would cause charges to move along the surface, resulting in a non-static equilibrium.

Option E is false as the surface of a conductor is not always an equipotential surface. This is because the distribution of charges on a conductor's surface can be uneven, leading to variations in the electric potential on its surface.

Hence, Option C is correct.

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Answer:

1.29 s

Explanation:

As we know that ,

\(\sf\longrightarrow Time_{descent}= \sqrt{\dfrac{2H}{g_{(moon)}}}\\\\\sf\longrightarrow t_d = \sqrt{\dfrac{ 2\times 1.4}{1.67}} \\\\\sf\longrightarrow t_d =\sqrt{1.67} s\\\\\sf\longrightarrow \boxed{\red{\sf Time_{descent}= 1.29 s }} \)

In science, a hypothesis is a tentative explanation of an observation, while a scientific theory is a broader, well-tested explanation for a natural phenomenon backed by multiple lines of evidence.

In the scientific method, a hypothesis is an initial explanation or proposed solution to a specific observation or problem. It is often based on limited evidence or previous knowledge and serves as a starting point for further investigation. A hypothesis is testable and can be supported or refuted through experimentation or further observations. It represents a possible explanation that requires empirical evidence to validate or invalidate its validity.

On the other hand, a scientific theory is a well-established and comprehensive explanation for a natural phenomenon that has been extensively tested and supported by multiple lines of evidence. Unlike a hypothesis, a scientific theory goes beyond a single observation or experiment. It encompasses a broad range of observations, experimental results, and logical reasoning. A scientific theory provides a framework that can explain and predict various related phenomena. It is subject to ongoing scrutiny and refinement, but its validity and acceptance are based on its consistency with empirical evidence and its ability to make accurate predictions.

In summary, while a hypothesis is a tentative explanation of an observation, a scientific theory is a broader and well-tested explanation that is supported by multiple lines of evidence and can account for a range of related phenomena.

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Cadences are to music as periods are to verbal expression, indicating the end of a unit of thought.

A cadence is the conclusion of a phrase in Western musical theory where the melody or harmony conveys a sense of resolution. A phrase, part, or piece of music might end with a harmonic cadence, which is a progression of two or more chords.

According to many definitions, music is the process of combining form, harmony, melody, rhythm, and other expressive elements with sound. Despite being a component of all human cultures and a cultural staple, the precise meanings of music differ significantly from country to country.

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Has a proton and a neutron. has no neutrons and only one proton. Consequently, a neutron will be the additional particle on the product side.

The proton stays in the nucleus while the electron is released as a particle, increasing the atomic number without changing the mass number.

Several instances include: Fusion processes produce extra particles (often protons or neutrons) after the joining of two light nuclei to create a heavier one. Spallation occurs when a particle strikes a nucleus with enough energy and momentum to break it into numerous little fragments or knock off a few large ones.

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Answer:

477.75cm^2

Explanation:

Area formula is L x W

27.3cm x 17.5cm = 477.75cm^2

Answer:

477.75

Explanation:

multiply one side by the other

Answer:

The key benefits to this is the athlete thinks and reflects for themselves which is a vital part of the Learning Styles Model. This technique is most useful for more experienced athletes who like to have involvement and their own opinions about their performance.

Explanation:

Answer:

 c = 5 m

Explanation:

this exercise you want to divide the rectangular room into two triangular rooms

the area of ​​triangles is

           A = ½ base height

           A = ½ 4 3

          A = 6 m²

the length of the curtain can be found using the Pythagorean theorem

           c² = b² + a²

           c = √ (4² + 3²)

           c = 5 m

this is the length of the curtain

Answer:

A

Explanation:

potential energy is usually at rest at the highest point in comparason to the ground

Answer: 0.25 m/s

Explanation:  Speed = wavelengt · frequency  

v = λf   and frequency is 1/period  f = 1/T

Then v = λ/T = 5 m / 20 s = 0.25 m/s

If the frequency of an X-ray is 7.4x10^18 hz then its wavelength will be 4.05x10^-11 meters.

The wavelength of an X-ray with a frequency of 7.4x10^18 Hz can be calculated by using the following formula.

We can use the formula: wavelength = speed of light/frequency.

X-rays travel at the speed of light, which is approximately 3.0x10^8 meters per second (m/s).

So, the wavelength of the X-ray would be:

wavelength = (3.0x10^8 m/s) / (7.4x10^18 Hz) ≈ 4.05x10^-11 meters.

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The image shows the correct way of lining up vectors to add them together, that the two arrows lined up one after the other, therefore the correct answer is option B.

The quantities that contain the magnitude of the quantities along with the direction are known as the vector quantities.

Examples of vector quantities are displacement, velocity acceleration, force, etc.

Thus, the image shows the correct way of lining up vectors to add them together, that the two arrows lined up one after the other, therefore the correct answer is option B.

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The key ingredient missing from the inner solar system to form a giant planet is solid material in the form of planetesimals.

The formation of giant planets requires solid material, in the form of planetesimals, to accrete and grow. In the inner solar system, from 0.2 to 2 astronomical units (AU), temperatures are too high for volatile materials like water to condense into solid ice.

Without the solid building blocks, there isn't enough mass for a planet to form by the process of accretion. This lack of solid material is why the inner solar system is dominated by small, rocky planets like Mercury, Venus, Earth, and Mars.

Additionally, the presence of the Sun's strong gravitational influence makes it difficult for planetesimals to come together and form a giant planet. These factors combined explain why no giant planets exist in the inner solar system.

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It falls 9.8m far for the apple to drop from tree in 1.4sec.

Apple fall time t = 1.4 s

The free fall distance in time t is given by

d = 1/2at²

where a = g = 10 m/s² = free fall acceleration

calculation:

Using the above formula and the values ​​given, the distance the apple will fall free in 1.4 seconds is

d = 1/2(10)(1.4)²

= 9.8 m

Therefore the distance um the apple will fall is 9.8 m.

Isaac Newton formulated gravitational theory in 1665 or 1666 after watching an apple fall. An apple falling from a tree is an example of Straight-line motion because gravity causes it to fall vertically in a straight line.

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Answer:

i got you there

Explanation:

the kinetic theory is that what ever that is in motion stays in motion

Answer:

D. ) The force would be zero newtons

Explanation:

Because

If you are at the center of the earth, gravity is zero because all the mass around you is pulling "up" (every direction there is up!)

So F=mg so if g is zero F is also zero