the center of a 910 kg satellite is 9.9 x 106 m from Earth’s center. What is the gravitational force between the satellite and Earth?4.5 x 103 N3.7 x 103 N8.9 x 103 N1.7 x 106 N

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Q. Two go-carts, A and B, race each other around a 1.0km track. Go-cart A travels at a constant speed of 20m/s. Go-cart B accelerates uniformly from rest at a rate of 0.333m/s^2. Which go-cart wins the race and by how much time?

Answer:

Go-cart A is faster

Explanation:

From the question we are told that

       The length of the track is \(l = 1.0 \ km = 1000 \ m\)

       The speed of  A is  \(v__{A}} = 20 \ m/s\)

       The uniform acceleration of  B is  \(a__{B}} = 0.333 \ m/s^2\)

  Generally the time taken by go-cart  A is mathematically represented as

              \(t__{A}} = \frac{l}{v__{A}}}\)

=>          \(t__{A}} = \frac{1000}{20}\)

=>           \(t__{A}} = 50 \ s\)

  Generally from kinematic equation we can evaluate the time taken by go-cart B as

             \(l = ut__{B}} + \frac{1}{2} a__{B}} * t__{B}}^2\)

given that go-cart B starts from rest  u =  0 m/s

So

            \(1000 = 0 *t__{B}} + \frac{1}{2} * 0.333 * t__{B}}^2\)

=>         \(1000 = 0 *t__{B}} + \frac{1}{2} 0.333 * t__{B}}^2\)            

=>         \(t__{B}} = 77.5 \ seconds\)  

Comparing  \(t__{A}} \ and \ t__{B}}\)  we see that \(t__{A}}\) is smaller so go-cart A is  faster

Answer: Large-scale surface ocean currents are driven by global wind systems that are fueled by energy from the sun. These currents transfer heat from the tropics to the polar regions, influencing local and global climate.

Explanation:

I hope this helped you some!

No. That would be silly.  The water in the tropics is the warmest, since the sun is most direct there.  

Any ocean current that takes water away from the tropics moves the water to cooler places, where the water cools off.  ESPECIALLY the poles, home of the coldest water on Earth.  ICE even !

Answer:

inertia

Explanation:

In the predator-prey relationship between eagles and rabbits, the larger the population of rabbits, the more the number of eagles the rabbit population can support.

A predator-prey relationship is a relationship between two organisms in which one organism kills the other for food.

The organism that kills the other for food is the predator.

The organism that is killed for food is the prey.

In the relationship between eagles and rabbits, the eagles are the predators while the rabbits are the prey.

The larger the population of rabbits, the more the number of eagles the rabbit population can support.

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The amount of information available, the length of time available to examine it, and consequently the complexity of weather occurrences limit one's ability to express their skill to predict the weather.

Models employ estimations and assumptions to forecast the weather because it is impossible to collect data from the future. These estimations from the models get less accurate as time goes on since the atmosphere is continually changing.

Probabilistic techniques accurately depict the uncertainty where deterministic plans provide exact average quantities with a known but unquantified uncertainty.

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Answer:

Option two

Explanation:

im smort

Answer:

I think it's B. there is a cold air mass pushing warm air mass up and replacing it over San Francisco

Answer:

A human

Explanation:

An elephant weighs more, therefore it's gravitational pull by Earth impacts it more than a human.

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Answer:

Explanation:

Think of it this way: An elephant has more inertia than a human. It is much harder to push an elephant across a floor than it is a human, and much harder to stop the elephant once it is moving. Therefore, by definition, an elephant has more mass than a human.

solve today's free puzzle, you will need your Morse Code Decoder Ring from last week. This puzzle is a list of words that are related in some way. Can you decode them all and figure out their relationship?

This puzzle would be great for kids 8 and older. If you need help constructing the decoder, click here.

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An electroscope is used to detect the presence of an electric charge. It consists of two metal plates or leaves that are suspended from an insulating support.

When an electric charge is brought near the electroscope, the leaves will diverge due to the electrostatic force of repulsion between them.

The extent of the divergence will depend on the magnitude of the charge. However, it is not possible to determine the sign (positive or negative) of the charge from an electroscope alone.

An electroscope is a device used to detect the presence of an electric charge. To tell if an electroscope has an electric charge, you can observe the behavior of the metal leaves on the electroscope.

When an electroscope has an electric charge, the metal leaves on the electroscope will spread apart. This is because the same charge on the metal leaves repels each other, causing them to move away.

It is not possible to tell from an electroscope alone what kind of charge it has. To determine the type of charge, you will need to use another device to induce a charge on the electroscope and observe the behavior of the leaves. If the leaves move away from each other, the electroscope has a positive charge. If the leaves move towards each other, the electroscope has a negative charge.

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The light intensity from  largest to smallest ranking will be  :B > D > A=C > E. where the area is measured on the plane perpendicular to the direction .

In physics, the intensity is the amount of energy that is transmitted per unit area, and the area is measured on a plane perpendicular to the direction that the energy equation will propagate. I = P/ 4(d2), with P denoting power. Let power of 1 bulb equal = P where I = intensity, d = distance at which the intensity must be determined.

case A = I =  P / (1) (1) 1 = P case with 2 = P In the situation B = I = 2P/(0.5)2 = 8P C = I = 4P / (2) (2) ^2 = P case Case (1)2 = 3P: D = I = 3P E = I = 2P /(1.5) (1.5) ^2 = 0.8 P

B > D > A=C > E will be the order of light intensity, from greatest to least.

rank the light intensity, from largest to smallest, at the point p in the figures?

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The ratio of the total number of predictions made to the number of classifications a model correctly predicts is known as model accuracy.

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3.96 × 1011 J is the  initial kinetic energy is needed by the satellite in order to reach a great (i.e., infinite) distance from the Earth, neglecting the effects of air resistance in the atmosphere.

In order to calculate the initial kinetic energy needed for the satellite to reach an infinite distance from Earth, we need to use the equation

K = 0.5\(mv^2\), where K is the kinetic energy, m is the mass of the satellite, and v is its velocity.

Using the given values of the satellite's mass (8000 kg) and the gravitational constant (6.67 × 10−11 N·m2/kg2), we can calculate the initial velocity needed:

v = √[(2GME)/RE] = √[(2 × 6.67 × 10−11 × 5.97 × 1024) / 6.37 × 106] = √[9.8 × 107] = 9.9 × 103 m/s

Using the velocity and mass values, we can calculate the initial kinetic energy needed for the satellite to reach an infinite distance from Earth:

K = 0.5\(mv^2\) = 0.5 × 8000 kg × (9.9 × 103)2 = 3.96 × 1011 J.

Therefore, the initial kinetic energy needed for the 8000 kg satellite to reach an infinite distance from Earth, neglecting the effects of air resistance in the atmosphere, is 3.96 × 1011 J.

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Answer:

λ = 75 µm, correct is A

Explanation:

In waves, speed is related to wavelength and frequency

          c = λ f

          λ = c / f

in this exercise indicate the frequency of rationality

          f = 4 THz = 4 10¹² Hz

let's calculate

        λ = 3 10⁸/4 10¹²

        λ = 7.5 10⁻⁵ m = 75 10⁻⁶ m

        λ = 75 µm

The frequency of the 5th harmonic in an open pipe is 1062.5 Hz. If the end of the pipe is covered, the frequency will increase.

In an open pipe, the harmonics (resonant frequencies) are generated based on the length of the pipe. The fundamental frequency (1st harmonic) is determined by the length of the pipe, and the higher harmonics are integer multiples of the fundamental frequency.

In this case, the 5th harmonic has a frequency of 1062.5 Hz in an open pipe that is 80 cm long. When the end of the pipe is covered, the pipe effectively becomes a closed pipe. In a closed pipe, the harmonics are generated differently, and the resonant frequencies are different.

When the end of the pipe is covered, the resonant frequencies in the closed pipe are higher compared to those in the open pipe. Therefore, if the end of the pipe is covered, the frequency of the 5th harmonic would increase from 1062.5 Hz. The exact new frequency would depend on the specific characteristics of the closed pipe.

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Answer:

lithosphere

Explanation:

the least densest layer is the outer most layer

the densest layer is the inner most layer and the inner most layer is the inner core

Answer:

lithosphere

Explanation:

i took the test and i got it right

Muchas personas sienten seguridad en el dinero porque con el mismo puede tener un mator control de su vida en general.

Hay varias razones por las que algunas personas pueden sentir seguridad en el dinero:

En resumen, la seguridad que el dinero puede proporcionar está relacionada con la capacidad de satisfacer las necesidades básicas, hacer frente a situaciones de emergencia y planificar el futuro.

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When atoms combine to form covalent bonds, the resulting collection of atoms or group of atoms is called a molecule.

Atoms can combine with each other through sharing of the electrons, donating the electrons etc. to make molecules.

When atoms combine by forming covalent bonds, the resulting collection of atoms is called a molecule. We can therefore say that a molecule is the simplest unit of a covalent compound.

Thus, when atoms combine to form covalent bonds, the resulting collection of atoms or group of atoms is called a molecule.

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Answer: For many things, like reproduction and releasing bad bacteria.

Explanation: We all have our parts, but what’s most important is our private parts. It helps us to use the restroom, and release the bad bacteria, without it, we’d die from holding it in! But also, it helps the world grow, because to reproduce we need those parts.

Answer:

1240000 kg * m/s

Explanation:

p = momentum

p = mass * velocity in kg* m/s

62,000 kg * 20 m/s = 1240000 kg * m/s

Answer:

3. When the number of turns, N is doubled, the strength of the electromagnet is also doubled

4. Doubling the voltage, doubles the strength of the electromagnet

5. The number of paper clips a 7.5 V battery would pick is approximately 28 paper clips

The number of paper clips a 7.5 V battery would pick is 59 paperclips

6. For the 50-coil electromagnet, the average number of paper clips a 1 V battery would pick is approximately 7 paperclips

For the 50-coil electromagnet, the average number of paper clips a 1 V battery would pick is 16 paperclips

Explanation:

3. The Magnetomotive Force, MMF = The Number of Turns on the Coil, N × The Current I Flowing in the Coil, I

∴ MMF = N × I

When the number of turns, N is doubled, the magnetomotive force, MMF is also doubled, and the strength of the electromagnet is doubled

4. Given that the voltage, V applied to the coil = The current, I flowing × The resistance, R of the coil, we have

V = I × R

Therefore, for a given constant resistance in the coil, doubling the voltage, doubles the current and therefore doubles the strength of the electromagnet

5. The average slope for the 25-coil electromagnet = (23 - 12)/(6 - 3) = 3.\(\bar 6\)

The number of paper clips a 7.5 V battery would pick = 12 + (7.5 - 3) × 11/3 = 28.5 paperclips  ≈ 28 paper clips

The average slope for the 50-coil electromagnet = (48 - 26)/(6 - 3) = 7.\(\bar 3\)

The number of paper clips a 7.5 V battery would pick = 26 + (7.5 - 3) × 22/3 = 59 paperclips

6. The slope calculated from a start point of approximately 0.4 V, is given as follows;

The slope for the 25-coil electromagnet = (12 - 6)/(3 - 0.4) = 30/13

Therefore, for the 25-coil electromagnet,  the average number of paper clips a 1 V battery would pick = 6 + (1 - 0.4) × 30/13) = 96/13 ≈ 7 paperclips

The slope for the 50-coil electromagnet = (26 - 13)/(3 - 0.4) = 5

Therefore, for the 50-coil electromagnet,  the average number of paper clips a 1 V battery would pick = 13 + (1 - 0.4) × 5 = 16 paperclips

3. When the number of revolutions, N, is twice, the electromagnet's strength is doubled as well.

4. Doubling the voltage doubles the electromagnet's strength.

5. The number of paper clips selected by a 7.5 V battery is 59.

6. For a 50-coil electromagnet, a 1 V battery would pull up around 7 paperclips on average. The average number of paper clips picked by a 1 V battery for a 50-coil electromagnet is 16 paperclips.

The magnetic field of an electromagnet is created by an electric current. Electromagnets are caused from conducting wire wriggled into a coil.

A magnetic field is created in the hole by a current passing through the wire.

The magnetic field production is increased by;

1) increasing the number of turns

2) increase the area of the loop

3) by moving the magnet faster

Answer for the following given options as follows;

3. When the number of revolutions, N, is twice, the electromagnet's strength is doubled as well. Because the no of coils in the circuit is directly proportional to the strength of electromagnet.

4. From the ohm's law principal doubling the voltage twice the current and hence the electromagnet's strength for a given constant resistance in the coil increases.

5. For the 25-coil electromagnet, the average slope is ;

\(\rm m_{avg}= \frac{23-12}{6-3} \\\\ m_{avg}= 3\)

The number of paper clips selected by a 7.5 V battery is;

\(\rm n = 12+ (7.5-+3)\times \frac{11}{3}\\\\n = 28.5\)

For the 50-coil electromagnet, the average slope;

\(\rm (m_{avg})_{50}= \frac{48-26}{6-3} \\\\\ \rm (m_{avg})_{50}= 7\)

The number of paper clips selected by a 7.5 V battery is;

\(\rm N = 26+(7.5-3) \times \frac{22}{3} \\\\ N= 59\)

The following is the slope determined from a starting position of around 0.4 V:

For the 25-coil electromagnet, the slope is;

\(\rm m_{25}=\frac{12-6}{3-0.4} \\\\\ m_{25}=\frac{6}{2.6} \\\\ m_{25}=\frac{30}{13}\)

As a result, the average number of paper clips a 1 V battery would choose for the 25-coil electromagnet is;

\(\rm N_{25}=6+ (1-0.4)\times \frac{30}{13} \\\\ N_{25}=\frac{96}{13} \\\\ N_{25}= 7 \ paperclip\)

For the 50-coil electromagnet, the slope is;

(26 - 13)/(3 - 0.4) = 5.

As a result, the average number of paper clips picked by a 1 V battery is;

\(\rm N'_{50}= 13+ (1-0.14)\times 5 \\\\ N'_{50}=16\)

Hence,the average number of paper clips picked by a 1 V battery for a 50-coil electromagnet is 16 paperclips.

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According to the principle of selective attention, as attention is focused on one object, all other features drop or recede into the background.

The principle of selective attention suggests that our attentional resources are limited, and we selectively focus on specific stimuli while filtering out others. When we concentrate our attention on one object or feature, it becomes the center of our focus, while other features or objects in the background are less noticeable or fade away. This phenomenon is known as "inattentional blindness" or "change blindness," where we may fail to perceive or remember unattended stimuli. Selective attention allows us to prioritize and process relevant information while disregarding irrelevant or less important features, enhancing our ability to focus on specific aspects of our environment.

The principle of selective attention explains that when we direct our attention to one object, other features or objects recede into the background, illustrating the limited capacity of our attentional resources.

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The largest root-mean-square current you can run through this bulb is 1.50A. If the current in the wire ever exceeds 1.50A, even for an instant, the wire will break.

What is wire?
A wire is a thin, malleable metal strand. The most common way to make wire is to draw the metal thru a hole in a draw plate or die. When expressed in terms of a gauge number, wire gauges are available in a variety of standard sizes. Mechanical loads are carried by wires, frequently in the form of wire rope. A "wire" can refer to an electrical cable in the context of electricity and telecommunications signals. This type of cable may have a "solid core" made up of a single wire or multiple strands woven together in stranded or braided forms. While wire is typically cylindrical in shape, it can also have other cross-sections, such as square, hexagonal, flattened rectangular, or even other shapes, for both aesthetic and technical uses, such as high-efficiency voice coils throughout loudspeakers. The Slinky toy's edge-wound coil springs are made of a special flattened wire.

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Answer:

5N towards north

Explanation:

Answer:

I think the answer is B

hope this helps

have a good day :)

Explanation:

Along with your family, plan nutritious meals, or establish a weekly healthy potluck at work. I don't enjoy exercising. Discard the outdated idea that exercising involves weightlifting at a gym.

The six fundamental lifestyle habits for a long, good health include sleeping enough, eating a good food, exercising, keeping a healthy weight, quitting smoking, and drinking in moderation.

Walking, cycling, skating, sports, active recreation, and play are all common methods to be active that anyone may do for fun and at any ability level. It has been demonstrated that regular exercise helps control and prevent noncommunicable diseases like diabetes, heart disease, stroke, and a number of malignancies.

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