Question 20
A graduated cylinder contains 100 mL of a liquid. The mass of the
graduated cylinder with the liquid is 145 grams. The mass of the
graduated cylinder when empty is 45 grams. The liquid is most likely
O Chloroform (Density = 1.492 g/mL)
Water (Density = 1 g/mL)
O Corn oil Density = 0.925 g/mL)
O Ethanol (Density = 0.789 g/mL)

Answer:

Explanation:

Newton's first law states that an object will not change its motion unless acted on by an unbalanced force.

If an object was acted on by a balanced force, these forces cancel out resulting in a net force of 0 newtons, which doesn't change anything for the object.

For example: A balanced force acts on a box. One man pushes the box with a force of 5 N to the right. Another man is on the other side pushing with 5 N to the left. Calculating the net force, (5-5=0) you get that the net force is 0 N. Because the net force is 0, this situation is a balanced force. Basically, the force cancels out leaving no force to act on the object, so the motion is not changed.

However, an unbalanced force results in a change to an object's motion. For example, if there was only one man pushing the box 5N to the right, the total net force would be 5 N to the right (5-0=5). Which mean the man pushing does not get cancelled out and actually affects the box by pushing it to the right by 5N.

Hope that clarifies things a little.

Newton's first law states that an object will not change its motion unless acted on by an unbalanced force.

If an object was acted on by a balanced force, these forces cancel out resulting in a net force of 0 newtons, which doesn't change anything for the object. According to Newton's first law, an item won't alter its motion unless an unbalanced force acts upon it.

When a balanced force acts on an object, these opposing forces cancel each other out, creating a net force of zero newtons, which has no effect on the object.

For instance, a box is affected by a balanced force. With a force of 5 N, one guy moves the box to the right. On the opposite side, a different man is pushing to the left with 5 N. When you calculate the net force (5-5=0), you discover that it is 0 N.

Therefore, Newton's first law states that an object will not change its motion unless acted on by an unbalanced force.

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The proportionality constant of the moving object experiencing a drag force is 0.01875 Ns²/m².

The work-energy principle states that the work done on an object is equal to its change in kinetic energy. So, the work done by the drag force can be found as follows:

W = (1/8)mv² - (1/2)mv₀²

where m = mass of the object, v = final speed, and v₀ = initial speed.

The work done by the drag force is also given by the formula:

W = ∫F(x)dx

where F(x) = force function and x = position of the object.

In this case, the force function is F(x) = -Cv², since the drag force is in the opposite direction of motion. So:

W = ∫-Cv²dx

Since the force is proportional to v², rewrite this as:

W = -C∫v²dx

Integrating both sides with respect to x:

W = -(1/3)Cv³

So, equating the two expressions for W:

(1/8)mv² - (1/2)mv₀² = -(1/3)Cv³

Substituting m = 0.01 kg, v₀ = 10 m/s, and solving for C:

C = -(3/8) × (m/v₀³) × (v² - v₀²) = -(3/8) × (0.01/10³) × (1/8 × 10² - 10²) = 0.01875 Ns²/m²

Therefore, the proportionality constant is C = 0.01875 Ns²/m².

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Answer:

Use equation 1/2 * m * v²

Explanation:

where m = mass in kg

and v = velocity in m/s

plug accordingly.

Answer:

A

Explanation:

One of the main benefits of informational interviewing is that it allows the person conducting the interviews to gain insights and information about a particular career or industry.

The time taken by parcel to cover the vertical distance is,

Plug in the known values,

The horizontal distance covered by parcel is,

Substitute known values,

Thus, the horizontal distance covered by parcel is 18503.2 m.

Answer:

The evaporation of water is an example of a change in Pysical Change .

Answer:

TRUE

Explanation:

The  statement "Waves can travel but the medium does not "travel" with it, even though they may move up and down." is a true statement

Option A is correct

A wave is simply defined as a disturbance in a medium that carries energy from point to point and can take the form of elastic deformation, a change in pressure, magnetic strength, electric potential, or temperature.

In conclusion, Mediums are the pathways or channel for travelling waves

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The magnetic pressure modifications capacity power into kinetic power. Dylan places magnetic toy trains subsequent to each other on a track.

When magnets have appealing forces among them and they're moved apart, kinetic power is transferred into the magnets whilst they're released and they pass lower back together. converting the space between magnets changes the amount of strength that can be transferred into and out of a magnetic area.

A charged shifting particle is a particle in movement with either a positive or terrible price. Magnetic pressure has a good-sized impact on charged debris. A robust magnetic pressure can alter the route of a transferring charged particle. A big object with a magnetic force encourages particles to revolve around it.

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The magnetic force changes potential energy into kinetic energy.

Moving a magnet around a coil of wire, or moving a coil of wire around a magnet, pushes the electrons in the wire and creates an electrical current. Electricity generators essentially convert kinetic energy into electrical energy.

All magnets have north and south poles. Contrary poles are interested in every different, while the same poles repel every different. While you rub a chunk of iron alongside a magnet, the north-seeking poles of the atoms inside the iron line up inside the same direction. The force generated via the aligned atoms creates a magnetic subject.

When  magnets are brought close collectively they exert a pressure on each different, like poles repel every different.  Unlike poles attract each different. Appeal and repulsion between two magnetic poles are examples of non-touch force.

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Answer:

100km/h

Explanation:

96km•2.5=240km

240÷3/5=240•5/3=400km

400-240=160km

4.1-2.5=1.6h

160÷1.6=100km/h

The car is moving at approximately 12.5 meters per second.

The kinetic energy (KE) of an object can be calculated using the formula:

KE = 1/2 * m * \(v^2\)

where

KE = kinetic energy,

m =Mass of the object, and

v = velocity.

In this case, we are given the mass (m) of the car as 1600 kg and the kinetic energy (KE) as 125,000 J. To find the velocity .

Substituting the  values , we have:

125,000 J = 1/2 * 1600 kg *\(v^2\)

Now, we can solve for v by rearranging the equation:

\(v^2\) = (2 * 125,000 J) / 1600 kg

\(v^2\) = 156.25 \(m^2/s^2\)

Taking the square root, we find:

v = √156.25\(m^2/s^2\)

v ≈ 12.5 m/s

Therefore, the car is moving at approximately 12.5 meters per second.

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The passage is describing the beauty of Acadie, a place that is home to the speaker. This passage is from Bliss Carman's "LOW TIDES" .

The sun is setting, and the speaker is captivated by the beauty of the landscape, which is enhanced by the unelusive glories of the tide. The speaker also reflects on a beloved face being gone for a long time and is moved by a grievous stream, which meanders through the fields of Acadie as if it is trying to figure out why the beloved face is gone. The speaker almost dreams that the beauty of the place will remain until the beloved face returns. The passage conveys a sense of longing and hope for the beloved to come back to Acadie.

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Based on my own known, the right  serving size for a 3 to 5-year-old child  are:

a. milk - A single cup

b. dry cereal - 1/2 cup

c. fruit - 1/2 cup

d. vegetable - 2 leafty

e. bread - 1 slice of bread.

A program director can find state licensing requirements for nutrition and food services for young children on their state's education or health department website.

The four sensations that contribute to food appeal are appearance, aroma, taste, and texture. Using fresh seasonal produce is cheaper and more flavorful. To control food costs, menu planners can use less expensive ingredients and reduce waste.

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Answer:

where?

Explanation:

ill edit my answer when see it

No,  recent changes in solar radiation are not correlated with the earth's temperature.

Seasonal temperatures of sites at various latitudes are influenced by the angle of incoming solar radiation. The incoming solar energy is more direct (almost perpendicular or closer to a 90° angle) when the sun's rays hit the surface of the Earth close to the equator. Warmer temperatures result from solar radiation being concentrated over a smaller surface area.

Higher latitudes have narrower solar radiation angles, which spread energy across a broader region of the surface and result in cooler temperatures. Surface temperatures are typically warmer at lower latitudes and cooler at higher latitudes because the angle of radiation varies with latitude (even though higher latitudes have more hours of daylight during the summer months).

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Answer:

is a guideline to help an individual write and achieve well-specified goals.

Explanation:

An action plan  is a guideline to help an individual write and achieve well-specified goals.

Answer:

yes, the guideline is to help an individual write and achieve well-specified goals.

Explanation:

The temperature of our sun is about 5700 K.

The temperature of a red star is lower than that, and it's between 2500 K and 3500 K.

The hottest type of star is the blue one, with temperatures from 10000 K to 50000 K.

Therefore the correct option is A.

Answer:

It is easier to scale the voltage of AC from high to low and low to high than with DC

Explanation:

typically power is used far away from the place where it's generated so to ensure that transmission losses( copper losses) are minimized voltage has to be stepped up during transmission..but due to the fact that most house hold equipment requires low voltage levels it has to be stepped down once it reaches a household/ domestic load...it's easier to do this for Ac than for DC.

Answer:

backward is the answer beacuse In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it.

The high temperature of the steam is

The lowest temperature of the steam is

The formula to calculate Carnot efficiency is

Substituting the values, the Carnot efficiency will be

The Carnot efficiency is 69.6 %.

Answer:

An eon

Explanation:

The geologic time scale is divided into eons, eras, periods, epochs and ages with eons being the longest time divisions and ages the shortest.

Answer: eon

Explanation:

Endothermic reactions are chemical processes that generate products by absorbing heat energy from the environment around the reactants.

One of the greatest illustrations of an exothermic reaction is the exploding of a firecracker, which emits a loud bang along with light and heat. Lighting a candle is an ongoing process in which the wax serves as fuel and sustainably produces a flame.

Exothermic reactions are those that release heat energy through chemical processes. C(g)+O2(g)+CO2(g)+Heat Energy is an example. Endothermic reactions are the ones that involve the absorption of heat energy. For instance, CaO+CO2Heat CaCO3.

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The magnitude and direction of the resultant of the five concurrent forces acting on a bolt is  390.58 N and -82.8 ⁰ respectively.

The magnitude and direction of the resultant of the five concurrent forces acting on a bolt is calculated as follows;

The sum of the x component of the five forces is calculated as;

F₁ₓ = -80 N x cos (27) = -71.28 N

F₂ₓ = -400 N x cos (22) = - 370.87 N

F₃ₓ = -150 N x cos (22 + 46) = -56.2 N

F₄ₓ = 300 N x cos (45) = 212.13 N

F₅ₓ = 250 N x cos (18) = 237.76 N

∑Fₓ = -48.98 N

The sum of the y component of the five forces is calculated as;

F₁y = -80 N x sin (27) = -36.32 N

F₂y = 400 N x sin (22) = 149.84 N

F₃y = 150 N x sin (22 + 46) = 139.1 N

F₄y = 300 N x sin (45) = 212.13 N

F₅y = -250 N x sin (18) = -77.25 N

∑Fy = 387.5 N

The magnitude of the resultant force;

F = √ (387.5² + 48.98²)

F = 390.58 N

The direction of the force;

θ = tan⁻¹ ( Fy / Fₓ )

θ = tan⁻¹ ( 387.5 / -48.98 )

θ = -82.8 ⁰

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Galileo challenged the Aristotelian-Ptolemaic model, providing support for the heliocentric model and paving the way for a new understanding of the universe.

Galileo Galilei played a crucial role in challenging the prevailing geocentric model of the universe proposed by Aristotle and supported by Ptolemy. He provided several lines of evidence that effectively disproved their theories and supported the heliocentric model proposed by Nicolaus Copernicus. Some of the key evidence used by Galileo includes:

1. Observations through a telescope: Galileo was one of the first astronomers to use a telescope to observe the heavens. His telescopic observations revealed several important discoveries that contradicted the Aristotelian-Ptolemaic worldview. He observed the phases of Venus, which demonstrated that Venus orbits the Sun and not Earth. He also observed the four largest moons of Jupiter, now known as the Galilean moons, which provided evidence for celestial bodies orbiting a planet other than Earth.

2. Sunspots: Galileo's observations of sunspots provided evidence that the Sun is not a perfect celestial body, as suggested by Aristotle. Sunspots indicated that the Sun has imperfections and undergoes changes, challenging the notion of celestial perfection.

3. Mountains on the Moon: Galileo observed the rugged and uneven surface of the Moon, which contradicted Aristotle's belief in celestial spheres made of perfect, unchanging material. The presence of mountains on the Moon suggested that celestial bodies are subject to the same physical laws as Earth.

4. Phases of Venus: Galileo's observations of the phases of Venus provided direct evidence for the heliocentric model. As Venus orbits the Sun, it goes through phases similar to the Moon, ranging from crescent to full. This observation strongly supported the idea that Venus revolves around the Sun.

These lines of evidence presented by Galileo challenged the Aristotelian-Ptolemaic model, providing support for the heliocentric model and paving the way for a new understanding of the universe. His work marked a significant turning point in the history of science and laid the foundation for modern astronomy.

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Answer:

mine is 9.75 so take that as you will

Explanation:

Answer:it’s c a cup of hot cocoa

Explanation:

Answer:

c, cup of hot cocoa

Explanation:

it might seem like the hot cocoa is the hottest, but because the substance is so small, it has the least thermal energy

According to Doerbecker and Ernst (1996) and Francart et al. (2011), interaural time difference (ITD) and interaural level difference (ILD) are the two primary auditory cues used by binaural hearing. The delay between each ear is known as ITD.

What technique best localizes sound between the two ears?

Rayleigh's view of horizontal sound localization has come to be known as the “duplex” theory: that sound localization at low frequencies relies on differences in phase at the two ears, or ITDs, and that high-frequency localization relies on interaural differences in sound level (ILDs).

What two variables affect sound localization?

The variation in the loudness of the sound in each ear and the time it took for the sound to reach each ear are two elements that affect how the sound is localized.

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The amount of water affects the mass and the height of the plants.

The correct conclusion is the conclusion which the data obtained supports.

Plants need both water and sunlight to grow.

The variation the amount of water or sunlight that a plant receives will affect the growth rate of the plant.

Based on the data obtained from the experiment where Pots A and B both have plain soil, bean seeds, and the same amount of light, while Pot B receives more water, the amount of water affects the mass and the height of the plants.

In conclusion, plants need both water and sunlight for growth.

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The joule is a basic unit of work or energy​

Answer:

Joule

Explanation:

If you ever feel like you are not doing enough work or energy in your life, just remember that you are constantly producing joules. Every time you move a muscle, breathe, blink, or even think, you are using up some joules. And every time you plug in your phone, laptop, or toaster, you are transferring some joules. Joules are everywhere, and they are awesome.

But how awesome are they? Well, let's put them in perspective. One joule is enough to lift an apple one meter off the ground. That may not sound impressive, but what if you had a million joules? Then you could lift a car one meter off the ground. Or what if you had a billion joules? Then you could launch a rocket into space. Or what if you had a trillion joules? Then you could... well, I don't know what you could do with that much energy, but it would be something amazing.

So, the next time you feel low on energy, just think of all the joules you have at your disposal. You are a powerhouse of work and energy, and you can do anything you set your mind to. Just don't forget to measure it in joules.