a spring has a natural length of 15 cm. it takes 50 joules of work to stretch it to 35 cm. how much work is needed to stretch it from a length of 35 cm to 85 cm?

Answer: Hi guys! The answer is B.

Explanation:

Got it right on Apex! :)

The spacing of the fringes will increase if the wavelength of the light is increased from 555 nm to 700 nm. Option a is Correct.

The spacing of the fringes in an interference pattern depends on the wavelength of the light and the distance between the two slits. According to the equation for the spacing of the fringes in Young's slit experiment, the spacing is given by:

d = mλ / N

here m is an integer and N is the number of fringes on the screen.

If the wavelength of the light is increased from 555 nm to 700 nm, then the value of d will increase because the new wavelength is longer than the old wavelength. This is because the wavelength determines the distance between the fringes, and as the wavelength increases, the distance between the fringes increases as well.

Therefore, the spacing of the fringes will increase if the wavelength of the light is increased from 555 nm to 700 nm. Option a is Correct.

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The statement 'establishing a high critical value in a statistical test is associated with more confidence' is TRUE.

The statistical significance is a arbitrary value used to indicate that data collected can be used to confirm (or reject) my working hypothesis.

The most widely used value to measure the statistical significance is the p threshold.

In conclusion, the statement 'Establishing a high critical value when calculating the results of a statistical test means that a researcher will have more confidence in finding significance than when a lower critical value is established' is TRUE.

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Answer:

The answer is F or false

Explanation:

correct edge 2023

Answer:

0.07

Explanation:

2.8/40 = 0.07

The true statements are:Jupiter's Great Red Spot is in the southern hemisphere.The fastest wind speed recorded in our solar system is on Neptune.

Among the given statements, only two are true. Jupiter's Great Red Spot, a massive storm, is indeed located in the southern hemisphere of the planet. The Great Red Spot is a prominent feature on Jupiter, visible as a giant swirling storm system. On the other hand, the fastest wind speed recorded in our solar system, reaching speeds of up to 2,100 kilometers per hour (1,300 miles per hour), is found on Neptune.

The strong winds on Neptune contribute to its dynamic atmosphere and the formation of features like the Great Dark Spot. The remaining statements about Pluto, Saturn's moon Enceladus, and Uranus are not true according to our current understanding.

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Answer:

I would say metals

Ok so let's start off by saying that chemicals take a big part in our life, right? Nevertheless, many of these chemicals may, especially if not appropriately used, endanger our health and poison our environment. Some reactions may result in death and injury to people, damage to physical property, and severe effects on the environment.

Next, let's talk about metals.

Metals are often good conductors of electricity and heat, shiny and pliable. The metals we use day-to-day are converted from metallic ores to their final form. Toxic metals sometimes imitate the action of an essential element in the body, interfering with the metabolic process resulting in illness.

Last, acids.

Acids can react violently with water and are harmful in the presence of moisture in the mouth or eyes or in proximity with other aqueous solutions

I hope this helps :)

Answer:

metals i think

Explanation:

The height at which the power shovel lifted the load is 6 meters.

Work done is simply defined as the energy transfer that takes place when an object is either pushed or pulled over a certain distance by an external force. It is expressed as;

Work done = force × distance

Given the data in the question;

Plug the given values into the above formula and solve for the height.

Work done = force × distance

24000kgm²/s² = 4000kgm/s² ×  h

h = 24000kgm²/s² ÷ 4000kgm/s²

h = 6m

Therefore, the value of the height is 6 meters.

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Answer:

Explanation:

For refraction , the formula is

sin i / sin r = μ₂ / μ₁

where light is travelling from medium 1 to 2 having refractive index of μ₁ and μ₂ . Angle of incidence in medium 1 is i and angle of refraction in medium 2 is r .

Here i = 70°, r = 37°

μ₁ = 1.8 ,μ₂ = ?

sin70 / sin 37 = μ₂ / 1.8

.939 / .602 = μ₂ / 1.8

1.56 =  μ₂ / 1.8

μ₂ = 2.81 .

The value of refraction index for the second medium will be  \(\mu_2=2.16\)

Every material has a different refractive index. The refracted index of any material shows that the light is refracted by how much angle.

So like for water its value will be different also for glass its value will be different.

Now it is given in the question that

Angle of incidence \(i=70^o\)

Refractive index of the first medium \(\mu_1=1.8\)

Angle of refraction \(r=37^o\)

Now from snells law

\(\dfrac{Sin \ i}{Sin \ r} = \dfrac{\mu_2}{\mu_1}\)

\(\dfrac{Sin70}{Sin37} = \dfrac{\mu_2}{1.8}\)

\(\mu_2= \dfrac{Sin70\times1.8}{Sin37}\)

\(\mu_2=2.16\)

Thus the value of the refraction index for the second medium will be  \(\mu_2=2.16\)

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Answer:

Even inside their ships, astronauts are exposed to a slow drizzle of cosmic rays coming right through the hull. The particles penetrate flesh, damaging tissue at the microscopic level. One possible side-effect is broken DNA, which can, over the course of time, cause cancer, cataracts and other maladies.

Answer:

Explanation:

A - 4.5

Answer:

b

Explanation:

hope it helps ya

Answer B

Explanation: They have very little groundwater.

Answer:

Choice A.

Nearness to a body of water causes an increase in humidity, due to the higher rate of evaporation.

Answer:

True

Explanation:

Answer:

Hello!

I do not have all ten listed out, however I can show you how to find out. First things first understand what the numbers mean on the table of elements. The number at the top is the atomic number. This represents how many protons an element has. This is also how many neutrons it has, because there is always the same number of protons and neutrons. The number at the bottom is the atomic mass. This is how much the atom weighs. To find the first 10 look for the elements with atomic numbers 1-10. It should be easy. I’ll give you the first one for example.

Hydrogen is the element with a atomic number of 1. Its atoms contain

-1 proton

- 1 neutron

-1 electron (also note the amount of electrons is equal to the amount of protons and neutrons)

Hydrogens atomic mass is (1.00784 u)

Lastly the symbol for hydrogen is (H)

Hope this helps!!!

The minimum magnitude of the electric field that balances the weight of the charged plastic sphere is approximately 0.313 N/C.

The force experienced by a charged object in an electric field is given by the equation:

F = qE

Where F is the force, q is the charge, and E is the electric field.

In this case, we are given the charge of the plastic sphere (-3.0 nC) and we need to find the minimum magnitude of the electric field that balances its weight.

The weight of the sphere can be calculated using the equation:

Weight = mass × gravitational acceleration

Given that the mass of the sphere is 9.6 g, we convert it to kilograms by dividing by 1000:

Mass = 9.6 g ÷ 1000 = 0.0096 kg

The gravitational acceleration is approximately 9.8 m/s².

Weight = 0.0096 kg × 9.8 m/s² = 0.09408 N

To balance the weight, the electric field must exert an upward force equal in magnitude to the weight. Therefore, we have:

F = qE

0.09408 N = (-3.0 × 10^(-9) C) × E

E = 0.09408 N / (-3.0 × 10^(-9) C)

E ≈ 0.313 N/C

Hence, the minimum magnitude of the electric field that balances the weight of the charged plastic sphere is approximately 0.313 N/C (newtons per coulomb).

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The correct order of increasing impedance is:

C. PZT, gel, skin, matching layer

Impedance is a measure of the opposition to the flow of sound waves in a medium. It depends on the density and speed of sound in the material. In the given options, the order of increasing impedance can be determined by considering the properties of the materials involved.

PZT (lead zirconate titanate) has a higher impedance than gel, skin, and the matching layer. PZT is a piezoelectric material commonly used in ultrasound transducers and has a higher density and speed of sound, leading to higher impedance.

Gel has a lower impedance compared to PZT but higher impedance than skin and the matching layer. Gel is used as a coupling medium between the transducer and the skin to enhance acoustic coupling and minimize impedance mismatch.

Skin has a lower impedance than both gel and the matching layer. It is the outermost layer and acts as an interface between the transducer and the biological tissue.

The matching layer has the lowest impedance among the given options. It is designed to match the impedance of the PZT to the impedance of the tissue being imaged, facilitating efficient sound transmission.

Therefore, the correct order is C.

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Wild chimpanzees fail to use certain aspects of human language in their systems of calls about predators, such as syntax and grammar. They also do not have the ability to create new words or abstract concepts, which are key components of human language.

When bonobos learn human sign-language or a pictogram language, they may be weak on certain aspects of human language such as syntax and grammar, as well as the ability to understand figurative language, metaphors, and idioms. They may also struggle with understanding complex sentences and communicating complex ideas. However, with proper training and practice, bonobos can develop impressive communication skills using these artificial languages.
Hi! Wild chimpanzees fail to use certain aspects of human language in their systems of calls about predators, such as syntax, grammar, and complex vocabulary. Additionally, they lack the ability to produce and comprehend a wide range of sounds or symbols that represent specific concepts.

When bonobos learn human sign language or a pictogram language, they tend to be weak in areas such as grammar, syntax, and the ability to create complex sentences. They may also struggle with understanding idiomatic expressions, metaphors, and other abstract language features.

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Answer:

125,000

Explanation:

Answer:

Let the power delivered by the sound wave be 'P'

Intensity by definition is the power delivered per unit area.

i.e. I =

dA

dP

;

In spherical polar coordinate system dA = r

2

Ω

I =

r

2

Ω

dP

;

I ∝

r

2

1

So if distance increases 3 fold. The Intensity becomes

9

1

times the initial

The ways to store one kilogram of mushrooms for an extended period: You can refrigerate them in a breathable container, dry them for later use, freeze them after blanching, can them in jars, or pickle them in a vinegar solution.

There are multiple ways to store one kilogram of mushrooms for an extended period. Here are a few suggestions:

Refrigeration: Place the mushrooms in a paper bag or a breathable container and store them in the refrigerator. This helps to slow down the growth of bacteria and fungi, keeping the mushrooms fresh for a longer time. Make sure to avoid storing them near foods with strong odors as mushrooms can absorb flavors.

Drying: Slice the mushrooms into thin pieces and dry them. You can use a food dehydrator, an oven set to low heat, or air-dry them in a well-ventilated area. Once they are completely dried, store them in an airtight container or a vacuum-sealed bag. Dried mushrooms can be rehydrated before use.

Freezing: Clean and slice the mushrooms, then blanch them quickly in boiling water for a couple of minutes. Drain and cool them before placing them in freezer-safe bags or containers. Freezing helps to preserve the mushrooms' texture and flavor. Thaw them before using or cook them directly from frozen.

Canning: Preserve mushrooms by canning them in jars. This involves cooking the mushrooms in a brine or vinegar solution and sealing them in sterilized jars. Canned mushrooms can be stored at room temperature and have a longer shelf life.

Pickling: Pickling mushrooms is another method to extend their storage life. Prepare a pickling solution using vinegar, water, salt, and desired spices. Cook the mushrooms briefly, then transfer them to sterilized jars and pour the pickling solution over them. Seal the jars and store them in a cool, dark place.

Remember to follow proper food safety guidelines and ensure that the mushrooms are fresh and in good condition before storing them. The chosen storage method may depend on personal preference, the intended use of the mushrooms, and the available resources.

Therefore, The following are some ideas for long-term mushroom storage per kilogram: After blanching, you can freeze them, preserve them in jars, dry them for later use, store them in the refrigerator in a breathable container, or pickle them in a vinegar solution.

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The correct answer is 0.75 second will take to change velocity.

What connection exists between force and mass of acceleration?

Mass times acceleration, or F=m x a, equals force. This means that in order to move an object at the same speed or velocity as an object with smaller mass, a stronger force is required. Newton's Second Law of Motion is this.

Given, Initial velocity u = 2 m/s

Final velocity     v=5 m/s, mass of trolley = 5 Kg. , Force = 20 N

Force = Mass x acceleration

 20 N = 5 x a

 a = 4 m/ s²

v = u + at

 5 = 2 + 4x t

 t = 3/ 4 = 0.75 second

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Answer:

B mass and velocity......................

(A) The two additional forces that act on the sled as it travels from the top of the hill to the bottom are friction force and weight of the children.

(B) The force of friction is opposing the motion while the weight of the children is assisting the downward motion.

The forces that act on the sled as it travels from the top of the hill to the bottom with either aid the downward motion or oppose the downward motion.

The forces acting on the sled include the following;

The weight of the children is acting downwards and it will increase the motion downwards since there in the same direction.

The force of friction between the surface of the sled and the hill will oppose the downward motion of the children as the father exerts the downward force.

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When the force on two charged spheres is tripled, the distance between them becomes approximately 3.16 cm.

Let's denote the initial distance between the charged spheres as \($d_1$\) and the final distance as \($d_2$\). According to Coulomb's law, the force between two charged spheres is inversely proportional to the square of the distance between them.

The relationship between the forces and distances can be expressed as:

\(\[\frac{F_2}{F_1} = \left(\frac{d_1}{d_2}\right)^2\]\)

where \($F_1$\) is the initial force and \($F_2$\) is the final force. Given that the force is tripled, we have:

\(\[\frac{3F_1}{F_1} = \left(\frac{d_1}{d_2}\right)^2\]\)

Simplifying the equation, we get:

\(\[3 = \left(\frac{d_1}{d_2}\right)^2\]\)

Taking the square root of both sides, we find:

\(\[\sqrt{3} = \frac{d_1}{d_2}\]\)

Rearranging the equation to solve for \($d_2$\), we have:

\(\[d_2 = \frac{d_1}{\sqrt{3}}\]\)

Substituting the initial distance of \($d_1 = 7.93$\) cm, we can calculate the final distance \($d_2$\):

\(\[d_2 = \frac{7.93}{\sqrt{3}} \approx 3.16 \text{ cm}\]\)

Therefore, when the force on each charged sphere is tripled, the distance between them becomes approximately 3.16 cm.

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SO my sports name would be called " Basvollball" It's where you have to hit in a volleyball into a basketball hoop, of course, the time is the same as football with increments of 5 minutes for junior high and 7 minutes for high school with halftime. Also, the ball can never touch the ground and if the ball ever hits the floor its the other's team ball. To decide which team gets the ball, a coin flip will decide it. For the point system, it depends on how far the ball is hit from so it's like basketball from 3 pointers to 2 points inside the line. If the team ever reaches 30 points without the other team scoring, the team who's winning will automatically win after the time runs out in that period or quarter. You can use every body part, as long as, the ball doesn't touch the floor, and you can only use your body to push someone, no pushing with hands or arms. You can play this sport indoors or outside whether the team has a field available. There's also a maximum of 14 players on the field, so 7 players on each team.

In a BJT, the width of the base narrows as the reverse bias across the base-collector junction rises, increasing the collector current.

Base width modulation, also known as the early effect, is a change in a bipolar transistor's base width brought on by a change in the applied base-to-collector voltage. For instance, the collector-base depletion width rises with increasing reverse bias across the collector-base junction.

The base current rises with VIN, which in turn raises the collector current. At some point, the voltage drop across the collector resistor RC will be sufficient for the BC junction to start moving into the forward-bias zone.

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