A 45-kg child sits on a 3.2-kg tire swing. What is the tension in the rope that hangs from a tree branch?

Explanation:

Domestic wiring is house wiring were phase/live wire,neutral wire,earth wire is used that functions in giving the electricity to our home except in case of neutral wire

The linear density of the wire: μ = T/v^2 = 1,057 N / (77.23 m/s)^2 = 1.46 x 10^-3 kg/m.

To find the mass of the wire, we can use the formula for the speed of a transverse wave on a string, v = sqrt(T/μ), where T is the tension in the string and μ is the linear density (mass per unit length) of the string. We can rearrange this formula to solve for μ: μ = T/v^2.

First, we need to find the tension in the string. The weight of the object (F = mg) creates a tension in the wire (T = F + mg), where g is the acceleration due to gravity. Plugging in the values, we get T = (54.0 kg)(9.81 m/s^2) + (54.0 kg)(9.81 m/s^2) = 1,057 N.

Next, we need to find the speed of the wave on the wire. The wave speed is equal to the distance traveled (the length of the wire, L) divided by the time it takes for the wave to travel that distance (0.0492 s). So, v = L/t = 3.80 m / 0.0492 s = 77.23 m/s.

Finally, we can plug in our values for T and v to find the linear density of the wire: μ = T/v^2 = 1,057 N / (77.23 m/s)^2 = 1.46 x 10^-3 kg/m.

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Answer:It’s A

Explanation:

Answer: 30 m/s going west

Explanation:

APE X

(a) To find the distance PQ, we can use the kinematic equation:

d = vi×t + 0.5×a×t².

where d is the distance, vi is the initial velocity (in this case 12 m/s horizontally), t is the time (0.32 s), and a is the acceleration due to gravity (9.8 m/s^2 downward).

Since the initial velocity is horizontal, the only acceleration acting on the dart is gravity, and we only need to consider the vertical displacement of the dart.

d = vi×t + 0.5×a×t²  d = 0 + 0.59.8×0.32²   d = 0.32 m

So the distance PQ is 0.32 m.

(b) To find the distance from the dart board where the dart was released, we need to find the horizontal displacement of the dart. We can use the same kinematic equation, but this time consider only the horizontal component of the initial velocity.

d = vi×t d = 12 m/s × 0.32 s   d = 3.84 m

So the dart was released 3.84 m away from the dart board.

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Answer:

distance- I think it is 6 then the displacement is 13.41

Explanation:

Answer:

50%.......

Explanation:

is the correct check it then send feedback

All of these statements could potentially apply to the real universe, depending on the perspective and context in which they are being used.

However, it is important to note that these analogies are not perfect representations of the universe and should be taken with a grain of salt. The universe is a unique and complex entity that cannot be fully understood through any one analogy or metaphor. It seems like you're looking for an analysis of different analogies for the universe.

Here's an assessment of the statements you provided:

a. The universe is like a giant clock: This analogy could be considered correct in the sense that the universe operates in a precise, orderly manner with the laws of physics governing its behavior. This is similar to the way a clock keeps accurate time through its mechanical components.

b. The universe is like a vast, complex machine: This statement is also correct. The universe can be thought of as a complex system made up of various interacting parts, such as galaxies, stars, and planets. These parts follow specific laws and principles, much like the components of a machine.

c. The universe is like a living organism: This analogy might not be entirely correct. While the universe does have elements of growth and evolution, it does not exhibit characteristics typically associated with living organisms, such as metabolism or the ability to reproduce.

d. The universe is like a giant, cosmic computer: This statement can be considered correct from a certain perspective. The universe can be viewed as a vast, information-processing system, where the laws of physics dictate how information is transformed and transmitted. This is similar to the way a computer processes and manages data.

In summary, statements a, b, and d can be considered correct, while statement c is less applicable as an analogy for the universe.

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Answer:

131.2440 N

Explanation:

The net force is calculated by finding the resultant between Fb and Fa. This is done by taking the square root of Fb squared plus Fa squared.

\(Fnet=\sqrt{Fb^{2} +Fa^{2} } =\sqrt{85N^{2} +100N^{2} } =\sqrt{7225+10000}=\sqrt{ 17225}\)

\(Fnet=131.2440 N\)

Work done (J) by the force is 60i - 78j + 18k.

Given,

F = (3i - 6j) NR

= (8i + 6k) m – 12i – 18j + 24J

= F * dJ = (3i - 6j) * (8i + 6k – 12i – 18j + 24)J

= (3i - 6j) * (-4i - 18j + 6k + 24)J

= (-12i - 54j + 18k + 72i - 24j)J

= (60i - 78j + 18k)J

Work done (J) by the force is 60i - 78j + 18k.

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The angle of the plate will affect how much sunlight hits the plate. The amount of sunlight that hits a surface depends on the angle of incidence, which is the angle at which the sunlight hits the surface. When the angle of incidence is perpendicular to the surface (i.e., the sun is directly overhead), the maximum amount of sunlight is received by the surface.

However, as the angle of incidence increases, the amount of sunlight that hits the surface decreases because the same amount of sunlight is spread over a larger area. Therefore, if the plate is not angled properly to face the sun, it will receive less sunlight, which will affect its efficiency in converting sunlight into electricity.

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Since astronomers have concluded that the Sun's activity varies in an 11-year cycle, the statement about this cycle which is true is that: C. The number of sunspots gets larger and smaller over the course of 11 years.

In Science, the Sun can be defined as an astronomical (celestial) body that is typically found within the solar system around which planetary (astronomical) bodies orbit, and whose light shines on planet Earth to differentiate day and night.

Based on astronomical records and information, we can reasonably infer and logically deduce that all of the activities which are associated with the Sun generally varies in an 11-year cycle, and this makes the number of sunspots to both get smaller and larger within a period of eleven (11) years.

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The sudden cessation of energy generation causes the core to collapse and the star's outer layers to collapse onto the core.

What is core collapse?

Core-collapse supernovae are spectacular explosions that occur at the end of a big star's thermonuclear evolution, giving rise to neutron stars and black holes. They are among the most intense occurrences in the universe, play an important role in the synthesis and distribution of chemical elements, drive the development of new stars, and are closely tied to an enigmatic subclass of gamma-ray bursts. As a result, astro-physicists are keen to learn which stars burst as supernovae, what physical mechanisms produce the explosion, and what observable effects result from these cataclysmic events.

When the explosion wave generated in the optically obscured stellar centre eventually reaches the surface layers of the star, the visual supernova outburst begins.

The fire ceases because iron does not work as a fuel. The sudden cessation of energy output leads the core to collapse and the star's outer layers to collapse onto the core. The infalling layers compress so quickly that they 'bounce' off the iron core at near-lightspeed.

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Answer:6.5 m/s

Explanation:Look at the image I believe that's the answer

The horizontal velocity of the diver would be 6.522 meters / seconds.

There are three equations of motion given by  Newton

v = u + at

S = ut + 1/2×a×t²

v² - u² = 2×a×s

As given in the problem, Divers at Acapulco dive from a cliff that is 61 m high. If the rocks below the cliff extend outward for 23 m, then we have to find out  the minimum horizontal velocity a diver must have to clear them,

By using the second equation of motion in the vertical direction,

s = ut + 0.5at²

61 = 0+ 0.5×(-9.81) ×t²

t² = 61/(0.5×9.81)

   = 12.43

t = 3.526 seconds

The horizontal velocity of the diver = 23 meters / 3.526 seconds

                                                            =6.522 meters / seconds

Thus, the horizontal velocity of the diver would be 6.522 meters/second.

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Answer:A 2.2kg block of ice slides across a rough floor. Its initial velocity is 2.5m/s and its final velocity is 0.50m/s. How much of the ice block melted as a result of the work done by friction? (Latent Heat of water is 3.3*10^5J/kg)

Explanation:

The heat produced by friction between a skate and the ice during movement over the surface melts the topmost layer of ice. However, even when you are still, ice is still slick. When you remain still on ice, there is no friction to produce heat, but the ice is still slippery.

Although friction does generate heat, the amount of heat it produces is insufficient to melt ice that is at a very low temperature. But even at low temperatures, ice still creates a slick liquid layer. The formation of a slippery coating even when the item is totally still cannot be explained by frictional heating.

Therefore, A rough floor is traversed by a 2.2 kg lump of ice. It moves at a final speed of 0.50 m/s after starting out at 2.5 m/s. What portion of the ice block melted as a result of the friction's work? (Water has a latent heat of 3.3×105 J/kg.)

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Answer

as it is given that 1hp=746W

100W=?hp

746hp=100W   (to find the value of hp we divide 100 on both sides)

746/100=hp

hp=7.46

If you change the source of wavelength to a longer wavelength (e.g. 600 nm), the distance between the zero order maximum and the third order maximum will decrease, since the numerator (λ) has increased.

The distance between the zero order maximum and the third order maximum in a diffraction pattern depends on the wavelength of the light and the size of the diffraction grating.

If you change the source wavelength from a shorter wavelength to a longer wavelength, the distance between the zero order maximum and the third order maximum will decrease. This is because the distance between the maxima in a diffraction pattern is inversely proportional to the wavelength of the light.

In mathematical terms, if 'd' is the distance between the maxima, 'λ' is the wavelength, and 'n' is the order of the maximum, then the relationship between these quantities is given by:

d = λ / (n × sinθ)

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The magnitude and direction of the net force on a 5.0kg object is 99.8 N inward.

The centripetal acceleration of the potter's wheel is calculated using the following formula as shown below;

a = ω²r

where;

ω = 90 rpm = 90 rev/min x 2π rad/rev x 1 min / 60 s = 9.42 rad/s

r = 45 cm / 2 = 22.5 cm = 0.225 m

a = (9.42)² x (0.225 m)

a = 19.97 m/s²

The magnitude of the net force on a 5 kg object is calculated as follows;

F = ma

where;

F = (5) x (19.97)

F = 99.8 N

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The complete question is below:

a 45-cm-diameter potter's horizontal wheel spins at 90 rpm. what are the magnitude and direction of the net force on a 5.0 kg object.

Answer:

Understanding patterns is important for human development because it allows us humans to make more Educated guesses in life. It allows the human brain to strengthen its logical thinking.

Explanation:

For example: A baby will occasionally learn to roll over or crawl through time. The pattern of doing such things allows the baby to learn more from its actions to make new ones.

I hope this helped im new but want to help :)  

gravitaional pull

not sure

Smallest momentum: Object B, Object A, Object C.

Largest momentum: Object C, Object A, Object B.

Momentum is defined as the product of mass and velocity, p = mv. Comparing the three objects, we can calculate their momentum as follows,

Object A: p = mv

Object B: p = (m/2) x (4u) = 2mu

Object C: p = (3m) x (v/3) = mv

From these equations, we can see that Object B has the smallest momentum since it has the lowest mass and speed. Object A has a larger momentum than Object B but smaller than Object C, which has the largest momentum due to its large mass. Therefore, the correct ranking from smallest to largest momentum is Object B, Object A, Object C.

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Answer:

This is one of the hottest summers America has ever seen and Jeremiah Warren is taking advantage of the heat wave and doing a little cooking…in his car!

It was about 98 or 99 degrees in Texas, so Jeremiah thought he’d head outside to see if it was hot enough to actually cook food.  He buttered up a frying pan on his dashboard and filled it with an egg, cookie dough, a hot dog and bacon (mmm…bacon!).  He set up another frying pan on the sidewalk and a few hours later he came back for a mid-day snack.

Explanation:

Answer:

The quadratic function models the path of the rocket. When we substitute an x value, we can determine the height in feet of the rocket.

To determine the height it was launched from, we would look at the y-intercept. This represents the starting value, as time = 0 in this point (cannot have negative time).

To determine how far the rocket traveled, we would look at the positive x-intercept of the expression. At this point, height = 0, so we can see the distance from start to finish of the rocket.

To determine the greatest height achieve, we would look at the vertex of the parabola generated from the given function. Using (-b/a, f(-b/a)), we can determine the greatest height achieved.

Answer:

None of the choices you provided are correct. When a gas burns, it releases energy in the form of heat and light. Some of this energy is transferred to the pot of water, increasing its temperature, but some of the energy is also released as light. However, the rest of the energy is not transformed into chemical, electrical, or nuclear energy. Instead, it is lost to the environment in the form of waste heat. This is why gas stoves can become hot to the touch - they are releasing excess energy in the form of heat that is not being used to heat the pot of water.

Explanation:

Answer: destructive interference

Explanation: maximum points of a wave and minimum points of

Another wave overlap and sum is zero

In order to determine the number of particles of methane, use the following expression:

number of particles = (mass /molar mass ) x Avogadro's number

in this case, you have:

molar mass = 16.03 grams/mole

mass = 120 grams

Avogadro's number = 6.02*10²³ particles/mol

replace the previos values of the parameters into the formula for the number of particles:

number of particles=(120 grams/ 16.03 grams/ mol)x(6.02*10²³particles/mol)

= (7.46 mol) x (6.02*10²³ particles/mol)

= 4.50*10²⁴ particles

Hence, the number of particles of methane, in 120 grams, is 4.50*10²⁴

Answer:

c. aluminum foil

Explanation:

Reflection is defined as the returning of light or sound wave from a surface at certain angles. For example: our image in the mirror.

To reflect light, we required a surface with one side completely polished, smooth and pure form so that it reflects maximum light rather than absorbing the light. Aluminum foil will reflect the most light from the given options. Aluminum foil has the purity and surface smoothness that makes it able to reflect maximum light. Any change in the smoothness of the aluminum foil, the reflectivity of light will decrease.

Other option a clear window, a green plastic bottle and a red lunch box will absorb more light rather than refect it.

Hence, the correct option is "c. aluminum foil ".

Answer:

D) Z,X,Y,W

Explanation:

TOOK THE QUIZ MATE, TOOK THE MF QUIZ

Answer:

D

Explanation:

edge 21

Answer:

To absorb heat

Explanation:

A black color is said to absorb much heat . This helps in cooling the engine as the radiator has absorbed the heat efficiently .

Additional Information:

Answer:

A. pole reversals

Explanation:

It's an evidence of magnetic pole reversal of Earth & sea-floor spreading.

Hope this helps!

Magnetic striping is evidence of seafloor spreading and pole reversals. Hence, option A is correct.

The notion that oceanic crust develops along submarine mountain zones, commonly known as the mid-ocean relevant standard, and expands out laterally away from them. This concept was crucial in the creation of the doctrine of plate tectonics, which transformed geologic thought in the last quarter of the twentieth century.

Shortly after World War II, sonar-equipped warships crisscrossed the oceans, gathering ocean-depth profiles of the seafloor underneath them. The survey data was used to create bas-relief maps of the ocean floor, and by 1953, American oceanic mapmaker Marie Tharp had created the first of many maps that revealed the presence of an underground mountain range of more than 16,000 km (10,000 miles) long in the Coast  Mid-Atlantic Ridge.

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