A stone is tied to a string and swung along the path of a vertical circle at constant speed. When is the string most likely to break?.

(a) The number of waves on the diagram is 2.

(b) The period of the of the oscillation of the wave is 0.4 second.

(c) The frequency of the wave is 2.5 Hz.

The number of waves on the diagram is determined by calculating the number of cycles.

number of waves = 2

The period of the of the oscillation of the wave or the time taken to make a complete cycle is calculated as;

T = 0.4 seconds

The frequency of the wave is the reciprocal of the period of the wave and it is calculated as follows;

f = 1/T

f = 1 / 0.4

f = 2.5 H

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To calculate the current, we need to find the number of helium nuclei passing through a given point per unit time. The linear density of helium nuclei (denoted by λ) is given as 9.53 × 10^7 m^(-1), which represents the number of nuclei per meter.

Since the helium nuclei are accelerated to a speed of 2.09 × 10^6 m/s, each nucleus takes a time of Δt = 1/v to pass through a given point. Therefore, the number of nuclei passing through that point per unit time is λv.

The charge of each helium nucleus is 2e, where e is the elementary charge. Thus, the total charge passing through the point per unit time is given by Q = 2e × λv.

Finally, the current (I) is defined as the rate of flow of charge, so we can write I = Q/Δt = 2e × λv / (1/v) = 2eλv^2.

Plugging in the given values, we get I = 2 × (1.6 × 10^(-19) C) × (9.53 × 10^7 m^(-1)) × (2.09 × 10^6 m/s)^2 ≈ 4.00 A.

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Maria Mitchell was an American astronomer who lived from 1818 to 1889. She was born on August 1, 1818, in Nantucket, Massachusetts, and passed away on June 28, 1889, in Lynn, Massachusetts. One interesting science-related aspect of Maria Mitchell's life is that she discovered a comet in 1847, known as "Miss Mitchell's Comet." She made this remarkable discovery using a telescope, becoming the first American woman to do so.

Apart from her contributions to astronomy, Maria Mitchell was also an advocate for women's rights and education. She was actively involved in promoting equal educational opportunities for women, serving as the first female professor at Vassar College in Poughkeepsie, New York. Her appointment at Vassar College marked a significant milestone in women's education, as it was the first women's college in the United States to offer astronomy as a course.

Maria Mitchell's most significant scientific contribution was her pioneering work in the field of celestial navigation. She meticulously observed and recorded the positions of celestial objects, such as stars and comets, and used her data to create accurate charts for navigators. Her work greatly improved the accuracy of celestial navigation, enabling safer and more efficient maritime travel. In recognition of her accomplishments, Maria Mitchell received numerous honors and accolades during her lifetime. She became the first woman elected to the American Academy of Arts and Sciences in 1848, and she was also elected as the first female member of the American Association for the Advancement of Science in 1850.Overall, Maria Mitchell's groundbreaking discoveries, her advocacy for women's education, and her advancements in celestial navigation solidified her as a prominent figure in the field of astronomy and a trailblazer for women in science.

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The shockwaves of released energy that radiate through Earth during an earthquake are classified as seismic waves.

An area of extremely high pressure traveling through the air, earth, or water is referred to as a shock wave. It is brought on by an earthquake, an explosion, or a fast-moving object.

Seismic waves are produced when components of the Earth move suddenly, such as when a fault slips during an earthquake. Volcanic eruptions, explosions, landslides, avalanches, and even running rivers can result in seismic waves.

When materials suddenly move within the Earth, such as when they slip along a fault during an earthquake, seismic waves are produced. Seismic waves can also be produced by volcanic eruptions, explosions, landslides, avalanches, and even swiftly flowing rivers.

Therefore, Seismic waves are the shockwaves of released energy that go through the Earth during an earthquake.

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Answer: It keeps them organized

Explanation: ... ew

Answer:

W = 1493.9 J = 1.49 KJ

Explanation:

The work done by the elevator on the object will be equal to the gain in is potential energy:

W = ΔP.E

W = mgΔh

where,

W = Work = ?

m = mass of object = 7.4 kg

g = 9.8 m/s²

Δh = gain in height = 20.6 m

Therefore,

W = (7.4 kg)(9.8 m/s²)(20.6 m)

W = 1493.9 J = 1.49 KJ

To solve this problem, we need to use the principle of moments, which states that the sum of the moments of all the forces acting on an object must be equal to zero if the object is in equilibrium.

First, let's calculate the moment of the weight of the sign about the pin on the beam:

M = Fd
M = 215 N x 3 m
M = 645 Nm

Where F is the weight of the sign and d is the distance from the pin to the center of gravity of the sign.

Next, let's calculate the moment of the tension in the guy wire about the pin on the beam:

M = Fd
M = T x 4 m
M = 4T Nm

Where T is the tension in the guy wire and d is the distance from the pin to the point where the guy wire attaches to the beam.

Since the beam is uniform and in equilibrium, the sum of the moments about the pin must be equal to zero:

M(sign) + M(guy wire) = 0
215 N x 3 m + 4T Nm = 0
T = (215 N x 3 m) / (4 m)
T = 161.25 N

Therefore, the tension in the guy wire is 161.25 N.

Now, let's calculate the horizontal and vertical forces exerted by the pin on the beam:

Vertical force = weight of sign + tension in guy wire
Vertical force = 215 N + 161.25 N
Vertical force = 376.25 N

Horizontal force = 0 (since the beam is in equilibrium and there is no horizontal acceleration)

Therefore, the horizontal force exerted by the pin on the beam is 0 N and the vertical force exerted by the pin on the beam is 376.25 N.
To find the tension in the guy wire and the horizontal and vertical forces exerted by the pin on the beam, we'll need to use the principles of equilibrium for the uniform 135-N beam supporting the 215-N auto repair shop sign.

For equilibrium, the sum of forces in the vertical direction and the sum of forces in the horizontal direction should be equal to zero. Additionally, the sum of the torques (moments) about any point on the beam should also be equal to zero.

First, let's determine the tension (T) in the guy wire:
ΣFy = 0 => Tsin(θ) - 215 N - 135 N = 0
Tsin(θ) = 215 N + 135 N
T = (350 N)/sin(θ)

Next, we'll find the horizontal force (H) exerted by the pin on the beam:
ΣFx = 0 => H - Tcos(θ) = 0
H = Tcos(θ) = [(350 N)/sin(θ)]*cos(θ)

Finally, we'll find the vertical force (V) exerted by the pin on the beam:
ΣFy = 0 => V + Tsin(θ) - 215 N - 135 N = 0
V = 215 N + 135 N - Tsin(θ)

Without specific values for the distances and the angle (θ), we cannot compute the numerical values for T, H, and V. However, you can use these equations to calculate them once you have that information.

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The tension in the guy wire is approximately 149.6 N. The horizontal force exerted by the pin on the beam is 80.4 N, and the vertical force exerted by the pin on the beam is 169.6 N.

To solve this problem, we can start by considering the equilibrium of forces acting on the beam. The weight of the sign, 215 N, can be considered as a downward force acting at a distance of 1.5 m from the left end of the beam.

We can assume that the beam is in equilibrium, meaning the sum of all horizontal forces and vertical forces acting on it is zero.

Let's denote the tension in the guy wire as T. The horizontal and vertical forces exerted by the pin on the beam can be denoted as H and V, respectively. Since the beam is uniform, we can assume that the center of mass of the beam is at its midpoint.

Using the equilibrium conditions, we can set up the following equations:

Horizontal forces: H - T = 0

Vertical forces: V - 215 N = 0

Taking moments about the left end of the beam, we can set up the equation:

V × 3 m - T × 4.5 m = 0

Solving these equations simultaneously, we find that T ≈ 149.6 N, H ≈ 80.4 N, and V ≈ 169.6 N.
Therefore, the tension in the guy wire is around 149.6 N, while the horizontal force exerted by the pin on the beam is about 80.4 N, and the vertical force is approximately 169.6 N.

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Answer:

A. Neutrons have 0 Charge

Explanation

Neutrons have no charge for the same reason that plastics (and other insulators don't). They just don't.

"This isn't a great answer, but the thing with charge is that we don't really know what "charge" is. We know that certain "charged" objects will attract some objects, while repelling . We also know that other other "charged" objects will behave the same way, but when the two charged objects are brought together, they repell."

to balance the teeter-totter, Bob would have to sit at the same distance from the center as Alice, which is 1 meter.The situation in the problem, Alice and Bob are two kids on a teeter-totter that's 2 meters long, with the pivot point at the center

. Alice is sitting at one end, 1 meter from the center. Bob is twice as heavy as Alice. The question asks to determine where Bob would have to sit for the teeter-totter to be balanced, in equilibrium.Alice's weight can be represented as WA = m, and Bob's weight as WB = 2m. Now, let's look at the other parameters of the teeter-totter:It has a length of 2 meters, so the center is located 1 meter away from each end.The distance between Alice and the center of the teeter-totter is 1 meter. It follows that the distance between Bob and the center of the teeter-totter must also be 1 meter. This is because Alice and Bob are located symmetrically with respect to the center of the teeter-totter. If Bob were to move further away from the center than Alice, he would exert more torque on the teeter-totter than Alice, and it would tip in his direction.

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The back side of a polished spoon has f = -6.50 cm (convex). If you

hold your nose 5.00 cm from it then the  magnification of the image is

0.864.

The formula for calculating magnification in such a case is: Magnification = -di/do

Here, f = -6.50 cm is the focal length of the mirror, and the object is the back side of a polished spoon.

The distance between the object and the mirror, in this case, is the distance between your nose and the spoon, which is 5.00 cm.

Thus, the distance of the image from the mirror is:di = -f/(1/do - 1/f)

Putting the values in the formula, we get:di = -6.50/(1/5 - 1/-6.50) = -4.32 cm (negative sign indicates that the image is virtual)

Using the magnification formula, we have: Magnification = -di/do = -(-4.32)/5.00 = 0.864

Thus, the magnification of the image is 0.864.

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Answer:

I don't know ur Language????

Answer:

α=atr

the relationship between linear accelaration and linear accelaration is proportional. The greater the angular acceleration is, the larger the linear (tangential) acceleration.

Answer: p = mv

Explanation:  momentum(p) is equal to mass(m) and velocity(v).

The change in the momentum of the bus is 10600 kg-m/s, if bus of 1600 kg crashes with a SUV of 600 kg.

The mass of the bus, m₁ = 1600 kg

The mass of the SUV, m₂ = 600 kg

Initial velocity of the bus, v₁ = 10 m/s

initial velocity of the SUV, v₂ = 0 (at rest)

Velocity of the bus after collision, v₃ = 3 m/s

Velocity of the SUV after collision, v₄ = 1 m/s

The change in momentum(Δp) is given by,

Δp = (m₁v₁ + m₂v₂) - (m₁v₃ + m₂v₄)

Δp = (1600 × 10 + 600 × 0) - (1600 × 3 + 600 × 1)

Δp = 16000 - 5400

Δp = 10600 kg-m/s

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The density of 9 m³ of mercury is 13530 kg/m³.

Density is a characteristic of a substance that indicates how much mass it contains in a given volume. To calculate density, the mass of the substance is divided by its volume. The formula used to calculate density is:

Density = Mass / Volume

In this problem, the given mass of mercury is 121770 kg and its volume is 9 m³. To find the density of mercury, we can use the formula above and plug in the given values:

Density = Mass / Volume

             = 121770 kg / 9 m³

             = 13530 kg/m³

Therefore, the density of 9 m³ mercury is 13530 kg/m³.

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Explanation:

Mass = m

Velocity = v

If Mass is increased 4 times = 4m

New velocity = 2v

Kinetic Energy

\( \frac{1}{2}m {v}^{2} \)

So it will be 1/2 × 4m × 2v × 2v

\(8m {v}^{2} \)

so Kinetic Energy will increase 4 times

Answer:

2.5 m/s²

Explanation:

Given,

Initial speed ( u ) = 10 m/s

Final speed ( v ) = 20 m/s

Time ( t ) = 4 seconds

To find : Acceleration ( a ) = ?

Formula : -

a = ( v - u ) / t

a = ( 20 - 10 ) / 4

= 10 / 4

= 5 / 2

a = 2.5 m/s²

Therefore,

The acceleration of the scooter is 2.5 m/s²

Out of 150 approved mortgage applications, a random sample may have variable or interest-only mortgages.

we are given that a random sample of 150 approved mortgage applications is either variable or interest-only mortgages. A variable mortgage, also known as an adjustable-rate mortgage (ARM), is a type of mortgage in which the interest rate fluctuates based on market conditions. An interest-only mortgage is a type of mortgage in which the borrower only pays interest on the loan for a certain period of time before beginning to make principal payments.To determine what percentage of the sample is variable or interest-only mortgages, we would need more information on the breakdown of the sample. However, we know that these are two different types of mortgages that borrowers can choose from when applying for a mortgage.

A home loan application is a report submitted to a bank when you apply for a home loan to buy land. The application is extensive and includes information about the borrower's employment history, financial situation, and the property being considered for purchase, among other things.

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The total work work done on a block by the force of friction is the force of friction times the distance traveled times the cosine of the angle between the friction force and displacement

Work done is measured in joules (J). It is distance moved along the line of action of the force is measured in metres (m)

Work is said to be done when a force acts upon an object to cause a displacement.

Calculating the work done on an object

work done = force × distance

Where;

Work done is measured in joules (J)

Force is measured in newtons (N)

Distance is measured in meters (m)

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The wall is positively charged, whereas it is negatively charged. If a woollen fabric is not used to massage it, it will not do so. When the sand was drawn inside the balloon, the same thing occurred.

Positive charges pull away from negative charges. The balloon will attract the wool fabric if it is not touched since it contains an equal balance of negative and positive charges. Both balloons will reject one another when they are brushed with the wool cloth because they both receive negative charges.

Positive and negative particles make up the water. Because positive and negative ions are attracted to one another, when you bring the balloon near the water, the positively charged water molecules will pull the water in the direction of the negatively charged balloon.

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Answer:

It will cool down and become a cold black dwarf.

Explanation:

The electron degeneracy pressure slowly overwhelms gravity, and the white dwarf evaporates. As gravity overwhelms the electron degeneracy pressure, it will explode as a nova.

The length of the tube for the fundamental frequency is 49 centimeters, and for the first overtone is 24.5 centimeters.

Given,

Frequency = 176 Hz

First overtone frequency = 352 Hz

Speed of sound = 344 m/s

To determine the length of a tube with specific frequencies, the formula:

L = (v / 4f)

where L is the length of the tube, v is the speed of sound, and f is the frequency.

For the fundamental frequency (first harmonic), the formula becomes:

L₁ = (v / 4f₁)

L₁ = (344 / 4 × 176)

L₁ = 0.49 meters

= 49 cm

For the first overtone (second harmonic), the formula becomes:

L₂ = (v / 4f₂)

L₂ = (344 / 4 × 352)

L₂ = 0.245 meters

24.5 cm

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Answer:

the correct answer is D

Explanation:

Answer:

80,886 cm^3

Explanation:

v= lwh (also known as length × width × height)

v = 122cm × 51cm × 13cm

v = 80,886 cm^3

Answer:

Sedimentary rocks.

Explanation:

A rock cycle can be defined as a concept used to describe the continuous process that leads to a rock's creation, formation, transformation from one form to another, destruction and reformation over a specific period of time. The natural phenomenons that influences the rock cycle are weathering, plate tectonic activity, erosion, etc.

A fossil can be defined as the mineral impression or remains of living organisms such as plants and animals that are prehistoric in nature.

Basically, the three (3) main types of rocks are; igneous rock, sedimentary rock and metamorphic rock.

Sediments come from living organisms such as plants to form organic sedimentary rocks and they are usually formed at pressure and temperature that doesn't destroy the fossils contained therein. Organic sedimentary rocks includes chalk, fossiliferous, coal, diatomite, etc. Also, some examples of inorganic land-derived sedimentary rocks are conglomerate, brescia and sandstone.

Hence, an organic sedimentary rock is a type of rock that contains or comprises of fossils.

Because ultraviolet light may be absorbed by the filler substance, but not by the lamp's light. Because UV light extracts energy from the filler substance while lamp light does not.

Ultraviolet Rays in the electromagnetic Spectrum Ultraviolet rays are a kind of electromagnetic radiation that extends from the visible light spectrum to the X-ray area.

Harmful rays have a long-term effect on humans, causing skin and eye problems. It is also a source of Vitamin C.

Because ultraviolet light may be absorbed by the filler substance, but not by the lamp's light. Because UV light extracts energy from the filler substance while lamp light does not,

Hence light from the ultraviolet flashlight harden the filling when light from the lamp does not.

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Answer:

The speed of the flow of water in the river is 4 m/s.

Explanation:

Given that,

Speed of man = 5 m/s

If this man swims crosses a specific river his speed is 3 m/s.

If he takes the minimum time to cross the river

Let the speed of flow of water be \(v_{r}\)

We need to calculate the speed of the flow of water in the river

Using formula for velocity

\(v_{rs}^2=v_{r}^2+v_{s}^2\)

\(v_{r}^2=v_{rs}^2-v_{s}^2\)

Where, \(v_{s}\) = velocity of swimmer

\(v_{sr}\) = relative velocity

\(v_{r}\) = velocity of river

Put the value into the formula

\(v_{r}^2=5^2-3^2}\)

\(v_{r}=\sqrt{5^2-3^2}\)

\(v_{r}=4\ m/s\)

Hence, The speed of the flow of water in the river is 4 m/s.

the answer is 0.693m.

step by step explanation:

The speed of sound, the frequency and the wavelength is related by the equation:

v= f λ

speed of sound is v=340ms⁻¹

frequency is f=490Hz

wavelength is λ= v/ f

λ=340/490

λ=0.693m

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​

Answer:

10seconds

Explanation:

use the formula a=v final_v inital/time