A 2,000-kg elevator is being accelerated upward at a rate of 3.0 m/s2. What is the tension in the cable

Answers

Answer 1

According to the above statement, 15800 N of tension is required to draw a cable at 3.0 m/s² of acceleration.

What are potential and tension?

A force known as tension is connected here to tugging of an item like the a rope, cord, or chain. It resembles elastic potential energy a lot. When a thing is pulled out and brought under tension, as soon as that force is removed, it will naturally recover to its relaxed length.

F = ma

  = 2000 kg × 3.0 m/s²

  = 6000 N.

The body's weight and the load are added to create the tension force.

Thus T = w + ma

T = 9800 N + 6000 N

  = 15800 N.

As a result, 15800 N of tension is required to draw a wire at 3.0 m/s² of acceleration.

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The complete question is-

A 2000 kg elevator is accelerated upward at a rate of 3.0 m/s2. What is the tension in the cable pulling the elevator upward when it experiences this acceleration?


Related Questions

9 An object of mass 1.2kg is moving with a velocity of 2.0m/s when it is acted on by a force of
4.0 N. The velocity of the object increases to 5.0 m/s.
For what period of time does the force act on the object?

Answers

Answer:

0.90 seconds

Explanation:

Given Info:

Object of mass ⇒ 1.2 kg

Velocity of 2.0m/s when it is acted on by a force of 4.0 N

Velocity of the object Increased to 5.0 m/s

Question:

For what period of time does the force act on the object?

Solve:

We first need to know the formula:

F = ma  Or F = m(v-u)/t

F = force

m = mass of an object

a = acceleration

v = Final Velocity

u = Initial Velocity

a = Acceleration

t = Time Taken

Knowing that;

Force = 4.0 N

Mass of an object = 1.2 kg

Final velocity = 5.0m/s

Initial velocity = 2.0m/s

Time taken = [t]

Now lets plug it in the formula:

F = m(v-u)/t

4.0 = 1.2(5-2)/t

t = 0.90 seconds.

Hence, period of time at which force is acted on the object is 0.90 sec.

RevyBreeze

The three wave pulses in the figure(Figure 1) travel along the same stretched string.
Rank in order, from largest to smallest, their wave speeds va, vb, and vc.

Answers

The wave pulses always travel in the same direction. Each pulse differs significantly in terms of amplitude. Va = vb = vc as a result.

Pulses come in a wide variety of sizes and forms and are just dried seeds from legumes. The four most popular pulses—beans, chickpeas, lentils, and peas—and some of its variants will be described, illustrated, and given common names in this book.

The edible seed of a legume plant is known as a pulse. Peas, lentils, and beans are examples of pulses. As an illustration, a pea pod is a legume, while the pea within is a pulse.

The fastest and slowest waves should be calculated. The three scenarios in the illustration each illustrate a different amplitude of the wave with the same string.

Consequently, va = vb = vc.

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can someone please answer this question in simple terms and not over complicated. i know nothing about the subject.

If you want to make a strong battery, should you pair two metals with high electron affinities, low electron affinities, or a mix? Explain your answer. (4 points)

Answers

Answer:

Mix

Explanation:

A battery has two electrodes, at one end it has the anode and the other end has the cathode. Electrons travel through the circuit from the anode (negative) to the cathode (positive), and this is the driving force that provides electricity to flow through circuits.

The anode needs to have a low electron affinity because it needs to readily release electrons, and the cathode needs to have a high electron affinity because it needs to readily accept electrons.

During a walk-around inspection, ensure there are no cracks on the brake drums that are more than ____ of the width of the friction area.

Answers

It's crucial to inspect the brake drums as part of your walk-around examination before setting off on a journey. If any brake drum has a crack that is more than half the breadth of the friction region.

What causes brake drums to crack?

Overheating and undercooling of the brake pedal during operation might result in cracked drums.

What should you do if the brake drum develops a crack?

Drums with cracks need to be changed right away. Blue ground -High temperatures, braking imbalance, abrupt stops, dragging brakes, or glazed brake pads can all result in blue drums. If no cracks have appeared, blue drums can still be utilized.

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In a transformer, energy is carried from the primary coil to the secondary coil by
A. The magnetic field in the iron core
B. The electrical heating of the primary coil
C. Electricity conducted through the iron core
D. The difference in voltage between the primary and secondary coils.

Answers

In a transformer, energy is carried from the primary coil to the secondary coil by The magnetic field in the iron core.

What is transformer?

A Transformer is an electrical device used to increase or decrease the voltage provided to an electrical circuit. It is made up of two or more coils of wire wound around a common core. The coils are typically referred to as the primary and secondary winding. Electricity flowing in the primary winding creates a magnetic field, which in turn induces a voltage in the secondary winding. The ratio of primary to secondary winding determines the output voltage. Transformers are used extensively in the electricity distribution network, enabling the safe and efficient transmission of electricity over long distances.

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Item 2 Sea stars, sea urchins, sand dollars, and brittle stars are all members of the same group. What is the common name of the group to which they all belong

Answers

Sea stars, brittle stars, as well as feather stars are a few examples of echinoderms. Despite their apparent differences, echinoderms share two key identifying traits that make them all identifiable.

What is the reputation of echinoderms?

Echinoderms are effective scavengers of decomposing material on the seafloor and feed on a range of microscopic organisms, which helps control their population. Sea urchins can destroy tropical sea-grass beds when they are present in great numbers, harming the creatures that live there astrophysics

Why do they go by the name echinoderms?

Because of their spiny skin, Echinodermata are so termed (from the Greek "echinos" for "spiny" and "dermo's" for "skin"). There are around 7,000 described extant species in this phylum. Only marine species can be classified as Echinodermata.

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Laney and Emma look up and see a rainbow. They know that the colors are arranged in wavelengths from longest to shortest, starting with red, then orange, yellow, green, blue, and then purple. Which color has the lowest frequency?

Answers

Answer:

The frequency of Red colour is minimum.

Explanation:

VIBGYOR

violet,Indigo,Blue, Green, yellow, Orange,Red

Violet to Red the wavelength increases and Frequency decreases.

Sorry I’m not answering your question but Do you know the answer to this: you are outside during the day, looking at a red car. What allows you to see the car? I think we are both in Light unit..

On the weather map, what does the symbol shown below represent?

A circle is shown with a slanting line. There are three ticks at the tip.

Cloud cover
Flurries
Snow
Wind speed

Answers

Answer:

wind speed i think where i live?

Answer:

Wind speed.

Explanation:

I took the test and I promise this is right.

Newton's First Law of Motion means that it will take a force to start and stop an object in motion. a) True b) False

Answers

To start and stop an item in motion, according to Newton's First Law of Motion, requires a force.

Newton's First Law: What Is It? Why does it mean that?

Newton's first law encapsulates the idea that an object's velocity only changes in response to a force. Unless acted upon by a net external force, Newton's first law states that an object at rest will remain at rest and an object in motion will continue to move at a constant speed.

What does Newton's formula's first law state?

Unless acted upon by a net external force, Newton's first law states that an object at rest will remain at rest and an object in motion will continue to move at a constant speed.

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Describe the gestalt principles of proximity similarity continuity and closure

Answers

Gestalt principles refer to a set of laws in psychology that describe how people perceive visual information. The four principles you mentioned are:

Proximity: Objects that are close to each other are perceived as being related to each other.

Similarity: Objects that are similar in appearance are perceived as being related to each other.

Continuity: People tend to perceive lines and shapes as continuing in the same direction, even if they are interrupted.

Closure: People tend to perceive incomplete shapes as complete, such as seeing a full circle when presented with a set of dots arranged in a circular pattern.

Who is Gestalt?

Gestalt theory reinforces the fact the whole of anything is greater than its parts. That is, the attributes of the whole are not deducible from analysis of the parts in isolation. The word Gestalt is utilized in modern German to imply the way a thing has been “placed,” or “put together.” There is no exact equivalent in English.

These principles help us understand how our brain organizes and interprets visual information, and are often used in design to create clear and effective visual layouts.

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Let be the function graphed below. If three subintervals of equal length are used, draw rectangles whose area represents a midpoint Riemann sum approximation of f(x) dx. Width of each subinterval: 90 35 30 15 10 5 3 4 5

Answers

If three subintervals of equal length are used to do midpoint Riemann sum approximation of ∫f(x)dx from 3 to 6, then width of each subinterval is  1.

To find the midpoint Riemann sum, you first need to divide the interval of integration (from 3 to 6) into three subintervals of equal length. You can choose subintervals of equal length manually by dividing the interval of integration into smaller parts. If we let the width of each subinterval be x, then the length of the interval is 6-3 = 3 and the length of each subinterval, x is 3/3 = 1.

Then, you need to find the midpoint of each subinterval by adding the left and right endpoint of each subinterval and dividing by 2.

For example, the first subinterval is from 3 to 4, so the midpoint is (3+4)/2 = 3.5

the second subinterval is from 4 to 5, so the midpoint is (4+5)/2 = 4.5

and the third subinterval is from 5 to 6, so the midpoint is (5+6)/2 = 5.5

To approximate the area under the curve of f(x) for each subinterval, you can use the value of f(x) at the midpoint of each subinterval and multiply it by the width of the subinterval.

--The question is incomplete, answering to the question below--

"Let f be the function graphed below. If three subintervals of equal length are used, draw rectangles whose area represents a midpoint Riemann sum approximation of ∫f(x)dx from 3 to 6. Width of each subinterval is ____."

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How many pennies fit in 40cm diameter circle and how many nickels fit in a 20cm diameter circle?

Answers

And I can carry my nickels far more easily than you can your bucket of pen-nies. I would prefer to keep every pen-ny. A 40 inch circle would contain about 2507 pen-nies. About 493 nickels would be in a 20 inch circle.

A circle is a shape made up of all points in a plane that are at a specific distance from the center point.The diameter is the distance along the circle's center that must travel in order to touch two points on its periphery.The size of a circle essentially divides it in two.In can also be said that in order to go around a curve while maintaining a  distance from another point then there is a moving point in a plane must follow a specific path.While the radius encircles the circle from edge to edge, the diameter of a circle cuts through the center.

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A tuning fork is used to produce sound waves with a frequency of 514 hertz. The waves travel through the air at 343 m/s. What is the wavelength of the sound waves?

Answers

Answer:

0.667 m

Explanation:

Applying,

v = λf................ Equation 1

Where v = velocity of sound, λ = wave length, f = frequency

make λ the subject of the equation

λ = v/f.............. Equation 2

From the question,

Given: v = 343 m/s, f = 514 hertz

Substitute these values into equation 2

λ = 343/514

λ = 0.667 m

Hence the wavelength of the sound wave is 0.667 m

cinder block is sitting on a platform 20 m high. It weighs 79 N. The block has
energy. Calculate it.

Answers

Answer:  1580 J

Explanation:

Energy is in the form of gravitational potential energy. (GPE)

GPE = mgh , where m is the mass of the block, h is the height and g is the gravitational constant of 9.81 ms-2.

Hence,

Total energy = mass x gravitational constant x height

                      = Weight x height (since W = mg)

                      = 79 x 20 J

                      = 1580 J

1/lambda = R (1/m^2 - 1/n^2) If m =1, in what range are the wavelengths calculated from the generalized formula shown above? and if m =3, in what range are the wavelengths calculated from the generalized formula shown above? microwave (1 to 10^-4m) infrared ( 10^-3 to 7*10^-7m) visible (7*10^-7 to 4*10^-7m) ultraviolet (4*10^-7 to 10^-8m) X rays (10^-8 to 10^-13m)

Answers

The range of wavelength when m = 3 is λ = 8.20 x 10-7 m to 18.7 x 10-7 m (this belongs to infrared radiations).

The wavenumber of hydrogen spectral series is 1/λ = R(1/m2 – 1/n2)

Rydberg constant, R = 1.097 x 107 m-1

1. When m = 1 and n = 2, 1/λ = 1.097 x 107 x (1/12 – ½2) = 0.822 x 107

Wavelength, λ = 1.215 x 10-7 m

When m = 1 and n = ∞

, 1/λ = 1.097 x 107 x (1/12 – 0) = 1.097 x 107

Wavelength, λ = 0.911 x 10-7 m

The range of wavelength when m = 1 is λ = 0.911 x 10-7 m to 1.215 x 10-7 m (this belongs to ultra-violet radiations)

2. When m = 3 and n = 4, 1/λ = 1.097 x 107 x (1/32 – 42) = 0.0533 x 107

Wavelength, λ = 18.7 x 10-7 m

When m = 3 and n = ∞

1/λ = 1.097 x 107 x (1/32 – 0) = 0.122 x 107

Wavelength, λ = 8.20 x 10-7 m

The range of wavelength when m = 3 is λ = 8.20 x 10-7 m to 18.7 x 10-7 m (this belongs to infra-red radiations)

In physics, the wavelength is the spatial duration of a periodic wave—the distance over which the wave's shape repeats. it is the gap between consecutive corresponding points of the same section on the wave, including two adjoining crests, troughs, or 0 crossings, and is a feature of each traveling wave and standing wave, as well as other spatial wave patterns. The inverse of the wavelength is known as the spatial frequency. Wavelength is normally exact by means of the Greek letter lambda (λ). The time period wavelength is also now and again implemented to modulated waves, and to the sinusoidal envelopes of modulated waves or waves fashioned with the aid of interference of several sinusoids.

Assuming a sinusoidal wave shifting at a set wave speed, the wavelength is inversely proportional to the frequency of the wave: waves with better frequencies have shorter wavelengths, and decreased frequencies have longer wavelengths.

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The crest of one wave of amplitude 1 meter intersects the crest of another wave of amplitude 3 meter. What is the resultant amplitude

Answers

A wave crest is the tallest point in the wave with the greatest displacement value. The junction of the 3-meter and 2-meter waves produces a 1 metre amplitude.

What exactly is amplitude ?

The amplitude of a wave is the measurement of the wave from its still position to its crest or trough. It is measured in metres.

When the wave is crossed, the elevation is 3 metres and the depression is 2 metres, resulting in an amplitude that causes destructive interference. Because 3 m is above the baseline and 2 m is below it, the resultant amplitude is 3 - 2 = 1 m.

As a consequence, the resultant amplitude is one metre.

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Part A Find the magnitude of the minimum lorce F Ihal allows Ihe window washer t0 move upward Express your answer in terms of the mass M and the magnitude of the acceleration due to gravity g

Answers

The minimum force that allows the window washer to move upward is Mg. The force is in terms of mass and acceleration due to gravity.

Given:

M = Mass of the window washer

g = Acceleration due to gravity

The forces acting are:

Force due to gravity = M × g

Tension in the rope = Force applied by the washer

The net force is zero. Therefore, the tension is:

T - M × g = 0

T = Mg

Hence, the minimum force that allows the window washer to move upward is Mg. The force is in terms of mass and acceleration due to gravity.

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Rank the following items that describe distances from longest distance (left) to shortest distance (right). (If two distances are equal, drag the second item on top of the first item. )a- the distance from the Milky Way Galaxy to the Andromeda Galaxyb- the distance from the Sun to the center of the Milky Way Galaxyc- the distance from Earth to Alpha Centaurid- one light-yeare- the distance across out solar system (to Neptune)f- the average distance from Earth to the Sun & one astronomical unit (AU)

Answers

Galaxy: The distance was calculated in 2004 using the Cepheid variable method to be 2.51 0.13 million light-years (770 40 kpc). In the Andromeda Galaxy, an eclipsing binary star was found in 2005.

Explanation for the above answer:

The universe, Earth, the solar system, the Milky Way galaxy, the local group, and the local supercluster.

Astronomers discovered a truly enormous galaxy earlier this year. Alcyoneus is a massive radio galaxy that is around 3 billion light-years away and extends 5 megaparsecs into space. Its length, 16.3 million light-years, makes it the longest structure of known galactic origin.

Our Sun and the Earth are travelling at a speed of about 43,000 miles per hour (70,000 km/hr) roughly in the direction of the brilliant star Vega in the constellation Lyra relative to the local standard of rest.

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5. Harrison claims that waves travel faster when the particles within the medium are farther apart. Is Harrison correct?
A. Harrison is incorrect because particles can force each other to vibrate more easily in elastic materials where particles are closer together.
B. Harrison is incorrect because particles can force each other to vibrate more easily in non-elastic materials where particles are farther apart.
C. Harrison is correct because particles can force each other to vibrate more easily in elastic materials where particles are closer together.
D. Harrison is correct because particles can force each other to vibrate more easily in non-elastic materials where particles are farther apart.​

Answers

Answer:

सं देश भर भर में नौ महिना अघिदेखि महिना अघिदेखि नै जातीय आधारमा प्रान्त पुगें र नेपाली जनताको लागि फरक छ तर त्यो पनि पाँचै वर्षमा धरासायी भयो पाँचै वर्षमा धरासायी भयो भने हेर्न त्यो पनि हो र स्वार्थी हुन्छ भन्थे यो मेरो पहिलो मृत्यु भएको हो। छ। यो म भने त्यो प्रेम कति

Harrison is incorrect because particles can force each other to vibrate more easily in elastic materials where particles are closer together. So, option A.

What is meant by vibration ?

Vibration is a periodic back-and-forth motion of the particles in an elastic body or medium.

Here,

Vibrations occurs when practically any physical system is moved out of its equilibrium condition and is left to react to forces that work to bring it back into equilibrium.

A periodic shift in time is referred to as a vibration. A wave is a regular oscillation in both space and time. The waves propagate from one point to another in a medium.

Most waves travel through different media, and this affects how fast they move.

In general, waves go through solids the quickest and gases the slowest. The reason for this is that while particles in a gas are farthest to one another, those in a solid are closer to one another.

Hence,

Harrison is incorrect because particles can force each other to vibrate more easily in elastic materials where particles are closer together. So, option A.

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Plants need to....................synthesize
protein other than carbon oxygen and hydrogen.

option
1. Phosphorus
2. Calcium
3. Nitrogen
4. None of this​

Answers

Answer:

nitrogen

Explanation:

because I also had this in exam and I was correct

Energy can't be made or destroyed. It is only ever transferred, stored or dissipated. This means that energy is... what?​

Answers

It means energy is conserved.

Energy neither can be created nor can be destroyed,it only can be transferred from one form to another,this is called law of conservation of energy.
The energy is conserved due the law of energy conservation

Help me please I have no clue what the answer is!!!!!!!!!!!!

Answers

the 3rd option is the correct answer

(. ^ ᴗ ^.)

When two swimmers are under water in a swimming pool, it is possible for
the interface between the water and the air to act as a mirror, allowing the
swimmers to see images of each other if they look up at the underside of
the surface. Explain this phenomenon.

Answers

Answer:

If they are looking at a large enoug h angle of incidence against a relatively calm surface, all the light will be internally reflected, allowing the  swimmers to see each other.

Explanation:

in some places, hot water from underground can shoot up into the air through a hole in the ground. when this happens, the ground surrounding the water increases in temperature. what happens to the molecules in the ground when the temperature of the ground increases?

Answers

The energy of the molecules in the ground increases in the given case when the temperature increases.

Convection and conduction are two ways that the Earth's heat is released.

Conduction takes place when the transferring of heat takes place from something hot to something cold.

On the other hand, convection takes place when the transferring of heat takes place by the movement of hot gases or liquids like water, air, or magma to a cooler region.  

Near the surface of the ground, the convection of heat water results in the hot springs and geysers to shoot up into the air through a hole in the ground.

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Among the elementary subatomic particles of physics is the muon, which decays within a few microseconds after formation. The muon has a rest mass 206.8 times that of an electron. Calculate the de Broglie wavelength associated with a muon traveling at 8.85 * 105 cm>s

Answers

By using the formulae, λ = h/mv, The De Broglie wavelength of the muon is calculated to be 4.13 × 10^10 m, as according to the given data in the question.

Is the nanosecond the shortest?

The shortest measured time is 100 attoseconds. A quadrillionth of a minute is a femtosecond. One quadrillionth of a minute is a picosecond. One quadrillionth of a second is a nanosecond.

What is more compact than nano?

Particles are smaller than just a nanometer. Depending on the element, an atom is between 0.1 and 0.3 nm in size. Atoms on the a surface in a SEM image.

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A unitormly dense, spherical
planet has a mass of 4×1026 kg, as well
as a radius of 53,000 km. It also
happens to also be hollow in the
following way shown. What is the
magnitude of the gravitational field of
the planet at the point P, in N/kg?
Round your answer to two decimal
places.

Answers

The magnitude of the gravitational field of the planet depends on its mass and distance from the object being affected by it.

What is Gravitational field?

Gravitational field is a region of space where a mass or object experiences a force of gravity. It is caused by the presence of a massive object, such as a planet or star, which exerts a gravitational pull on other objects within its vicinity. The strength of the gravitational field is determined by the mass of the object and its distance from other objects.

The gravitational field of the planet at Point P can be calculated by using the equation,

g = G*M/r2

where G is the gravitational constant (6.67 x 10-11 Nm2/kg2), M is the mass of the planet (4 x 1026 kg), and r is the distance from the center of the planet to Point P (53,000 km).

Plugging in the values,

g = (6.67 x 10-11 Nm2/kg2) x (4 x 1026 kg) / (53,000 km)2

g = (6.67 x 10-11 Nm2/kg2) x (4 x 1026 kg) / (2.8409 x 1012 m2)

g = (6.67 x 10-11 Nm2/kg2) x (14.1636 x 1015 kg)

g = 9.5 x 10-5 N/kg

Therefore, the magnitude of the gravitational field of the planet at Point P is 9.50 x 10-5 N/kg.

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The Earth has a mass of 6 x 10^24 kg and orbits the Sun in 3.15 x 10^7 seconds at a constant radius of 1.5 x 10^11m. Find the following.
(a) What is the Earth's centripetal acceleration around the Sun?
(b) What is the gravitational force acting between the Sun and Earth?
(c) What is the mass of the Sun?

Answers

The Sun's mass is 1.778 x 10 m/s2. v=2rT, where T is the amount of time it takes for the Earth to turn around the Sun.

What is our sun's mass?

Mass and volume: 1.989 x 1030 kilograms The sun has a mass of 1.989 x 1030 kilograms, which is about 333,000 times the mass of the Earth. Leading astronomers Jack J. and Imke de Pater found that the sun contains 99.8 percent of the mass of the entire solar system.

Earth's mass, Me, is 6 x 10 kg.

Earth's R Radius and Time of Rotation are 1.5x10m. 3.15 x 107 Sec.

Ac = earth's centripetal acceleration We know that W =  345X107 1.99 X 10 Rad/s Gravitational Force F 6x1024 x 1.99x107x mass of the Sun Me 2

F equals 35 + 82 x 10° N Ani.

F = 6 R2 28 2522 x 10" 6.67 x 10" x 6 x 1024 x Ms  (1.5 X 10") 2 Ms 35.82 x 1028 x 1.5X1-5 x 1822 6.67 X 10" x 6 x 10' 24 Ms 50 80.59 x 10° 40.02 X 10/3 37 Ms = 2.01 x 10 kg is known to exist.

The fact that centripetal acceleration F-ma f 22 equates both equations is known by mass of now. ma Scanner a equals 52.

ат 24 6.67 x 10" x 6X 10° 1-5 x 10" 17:78 x 16-9 = 1.778 x 10 m/s2 Ans

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If you wanted to soundproof your bedroom, the best material to line the walls would be

1. dense material such as plywood
2. soft material such as a foam cushion
3. a very hard material such as ceramic tile

Answers

Answer:

a soft foam material because soft materials absorb sound better

What is the spring constant of a spring of negligible mass which gained 8 joules of potential energy as a result of being compressed 0.4 meter

Answers

Answer:

[tex]100N/m[/tex]

Explanation:

The formula to find the spring constant given the potential energy and sprint displacement is:

[tex]E=\frac{1}{2} kx^{2}[/tex]

where:

[tex]E[/tex] is the energy ( in Joules)

[tex]k[/tex] is the constant ( in Newtons per meter)

[tex]x[/tex] is the extension ( in meters)

thus, by rearranging the formula we can get:
[tex]k=2\frac{E}{x^{2} }[/tex]

[tex]k=2\frac{8}{0.16}[/tex]

[tex]k=2*50=100N/m[/tex]

If you have a set of holiday lights that is on a series circuit, predict what would happen if the series circuit were cut off in the middle. Infer how this would differ from what would happen with a parallel circuit.

Answers

If the series circuit that powers your holiday lights were to be severed in the middle. The lights would all stop functioning. Only one light would stop working if the lights were linked in parallel circuit.

A series circuit is a straightforward circuit that enables electrons to go between one or more resistors. A resistor is anything that drains energy from a cell (battery). The resistor in a series circuit is typically a lightbulb. A series circuit is one in which the entire current flows through each element. A series circuit is a straightforward circuit that enables electrons to go between one or more resistors.

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PLZ HELP! I WILL GIVE BRAINLIEST! Factor 400 completely. Write all prime factors in order and use the 'power' notation. (2x+6y) exponent 2 with solution po thanks I need help i dont want to go to summer school The following magazines are in a rack at a doctor's office. 1 sports magazine 2 movie magazines 3 news magazines 3 science magazines Gwen will choose a magazine at random, put it back, and choose another magazine. What is the probability that she will choose a science magazine and then a movie magazine? A: 2/27 B: 1/12C: 5/9 D: 7/12 A manufacturer receives parts from two suppliers. A simple random sample of 400 parts from supplier 1 finds 20 defective. A simple random sample of 200 parts from supplier 2 finds 20 defective. Let p1 and p2 be the proportion of all parts from suppliers 1 and 2, respectively, that are defective. Test whether the defective rates of the parts from two suppliers are significant different at the 1% significance level. Conduct a hypothesis testing. Answer the next three questions. 12. Test statistic Dengue fever is an infectious disease of humans that is caused by a virus. There are four main viral strains, and an individual can never be infected by the same strain twice. However, a second infection can occur by any of the other strains. The severity of the second infection depends on the identity of both the strain that caused the first infection and the strain causing the second infection, as well as the order in which these were acquired. Required:How many different levels of severity are possible for an individual acquiring a second infection help pls, i'm stuck on this question organization formed at the end of world war ii to promote international peace and security carlos scored a total of 60 points in his last three basketball games. be improved in each game by scoring 6 more points than in the previous game. how many points did carlos score in his first game? Form the quadratic equation whose one root is 2 + 2^(1/2) What is moment arm distance? Ms A is a 53 year old marketing executive recently diagnosed with uterine cancer. She had a total hysterectomy and is undergoing radiation therapy. She is experiencing nausea, diarrhea, vomiting, and anorexia. Questions 45, 46, 47 refer to this case study. The symptoms she is experiencing are consistent with: What is the equation of the line that passes through the points (-2, 3) and (2, 7)? (5 points)O x-y=-1Ox-y=-2Ox-y=-5O x-y=-6 If the number of moles in a balloon is doubled, but the temperature and pressure don't change, what happens to the volume? aIt increases, but not in proportion with the moles bIt is cut in half cIt doubles dIt does not chang What is the approximate volume of this cone?3.14 as your approximation for Enter your answer as a whole number, like this: 42 A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 35.0 min at 55.0 km/h, 16.0 min at 95.0 km/h, and 40.0 min at 35.0 km/h and spends 55.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. PLSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS HEEEEEEEEEEEEEEEEEEEEEEEELLLLLLLLLP ILLLLLLLLLLLLL BIVE brainleist help pls asap gotta ace this bc my grades bad If a solution is 8% solute, it is [x]% solvent After the Zhou removed this Shan as rulers, how did they reorganize the land?