On holiday a family travels from meyerville 10 miles away to sprytown 70 miles away in 3 hours. Find their speed

Answer:

1.positive velocity.

2.speeding up.

Answer:

a. 25.80 m

b. 4.59s

Explanation:

(refer to attached for reference)

Part a :

We are asked to find the distance the ball rises "s"

The relevant equation of motion is:

v² = u² + 2as,

Given:

Initial speed, u = 22.5 m/s

As the ball rises, we can also deduce the following:

1) the ball rises to a maximum height before it starts falling again. At the point of maximum height, for a split second, speed of the ball is zero.

Hence we can deduce that final speed, v = 0 m/s

2) the only acceleration acting on the ball as it travels is gravity acting downward. Hence the acceleration that the ball experiences is equal to negative gravitational acceleration, i.e a = - 9.81 m/s²

Simply substitute the above values into the equation above and solve for distance "s"

v² = u² + 2as

0² = 22.5² + 2(-9.81)s

19.62s = 22.5²

s = 22.5² / 19.62 = 25.80 m (answer)

Part b:

We are asked to find how long the ball takes to rise and fall again before it is caught. We are also told that the time for the ball to rise is the same as the time for the ball to fall. Hence all we need to do is find the time taken for the ball to rise and then multiply that by 2 to get our answer.

In this case, the relevant equation of motion is:

v = u + at, where t is the time taken for the ball to rise.

simple substitute the above known values into this equation and solve for t

v = u + at

0 = 22.5 + (-9.81)t

9.81t = 22.5

t = 22.5/9.81

t = 2.29 s

hence the time taken to rise AND fall = 2t = 2(2.29) = 4.59s (answer)

The ball will rise to the height of 25.8 meters and the ball will remain in air for 4.5 seconds for both rise and fall of the ball.

In the field of physics, the idea and practice of motion are crucial. Numerous words and elements are important to the motion. Such as length, breadth, depth, velocity, and so forth. Static or variable velocity is a property of moving things. Thus, if the motion is accelerating, the initial velocity and the ultimate velocity may differ. The pace at which an object's position changes in relation to time is known as its velocity.

According to the question, the given values are :

Initial Speed, u = 22.5 m/s

Final Speed, v = 0 m/s

Acceleration, a = -9.8 m/s²

Use equation of motion :

v = u + at

0 = 22.5 + (-9.8)(t)

t = 22.5 / 9.8

t = 2.2 seconds.

(a) The height rise of the ball will be :

s = ut + 1/2 at²

s = 22.5(2.2) + 1/2(-9.8)(2.2)²

s = 49.5 - 23.71

s = 25.8 meters.

(b) The time that the ball remain in the air :

2(t) = 2 (2.2)

= 4.4 seconds.

Hence, the ball will cover a distance of 25.8 meters and the time it will be in the air is 4.4 seconds.

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The magnitude of the transfer function is equal to unity when the gain of the system is equal to 1 or 0dB. This occurs at the system's resonant frequency or cutoff frequency depending on the type of system.

The resonant frequency is the frequency at which the system's response is maximum and occurs in systems with a natural frequency such as RLC circuits. The cutoff frequency is the frequency at which the system's response begins to roll off and occurs in systems with a bandwidth such as filters.

Therefore, to find the frequencies at which the magnitude of the transfer function is equal to unity, we need to determine the resonant or cutoff frequencies of the system. This can be done by analyzing the transfer function and identifying the frequency-dependent terms.

Once the resonant or cutoff frequencies have been determined, we can convert them to radians per second by multiplying by 2π. We express our answers in ascending order separated by a comma and to three significant figures.

In summary, the frequencies at which the magnitude of the transfer function is equal to unity depend on the resonant or cutoff frequencies of the system and can be found by analyzing the transfer function. We then convert these frequencies to radians per second to express our answers.

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The maximum current at resonance in this LRC circuit, when the peak external voltage is 180 V, is approximately 28.6 amperes (A).

To calculate the capacitance required to produce resonance at 2600 Hz in an LRC circuit with L = 13.6 mH and R = 6.30 Ω, we can use the resonance frequency formula:

f = 1 / (2π√(LC))

where f is the frequency of resonance, L is the inductance, C is the capacitance, and π is the mathematical constant pi.

Rearranging the formula to solve for C, we get:

C = 1 / (4π²f²L)

Substituting the given values, we get:

C = 1 / (4π²(2600 Hz)²(13.6 mH))

C ≈ 5.92 × 10⁻⁹ F

Therefore, the capacitance required to produce resonance at 2600 Hz in this LRC circuit is approximately 5.92 nanofarads (nF).

Part B:

To calculate the maximum current at resonance if the peak external voltage is 180 V, we can use the maximum current formula:

Imax = Vmax / R

where Imax is the maximum current, Vmax is the peak external voltage, and R is the resistance of the circuit.

Substituting the given values, we get:

Imax = (180 V) / (6.30 Ω)

Imax ≈ 28.6 A

Therefore, the maximum current at resonance in this LRC circuit, when the peak external voltage is 180 V, is approximately 28.6 amperes (A).

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For two nucleons 2 femtometers (fm) apart, the strong force is attractive. The strong force, also known as the strong nuclear force or strong interaction, is one of the four fundamental forces in nature.

It is responsible for binding protons and neutrons (collectively called nucleons) together in atomic nuclei. This force is attractive at short distances (around 1-3 femtometers), and it overcomes the electrostatic repulsion between positively charged protons. As the distance between the two nucleons decreases, the intensity of the pion exchange increases, and so does the strength of the attractive force. This is why the strong force is so effective at binding the nucleons together in the nucleus of an atom.

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When creating a listing on the MLS (Multiple Listing Service), it is essential to adhere to specific rules and guidelines.

Here are some generally allowed practices according to most MLS guidelines:

Accuracy and Truthfulness: Provide precise and truthful information about the property in the listing. It should accurately represent the property's features, condition, and availability.

Current and Up-to-date: Ensure that the property is currently available for sale or lease and that the information provided in the listing is current and up-to-date. Any changes in availability or status should be promptly reflected.

Multiple Images: Include multiple images of the property in the listing. However, the images should not be misleading or misrepresent the property's condition or features.

Compliance with Laws: Ensure that the listing complies with fair housing laws and other relevant laws and regulations. Avoid any discriminatory language or practices that may violate fair housing guidelines.

Complete and Error-free: Ensure that all data fields in the listing are completed accurately and there are no errors or omissions in the information provided.

By following these guidelines, the MLS listing can effectively and transparently present the property, attracting potential buyers or tenants while maintaining compliance with applicable laws and regulations.

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Deceleration is the opposite of acceleration and refers to the slowing down of an object's speed. Therefore, the answer is b. negative.

When an object is decelerating, its acceleration is negative because it is moving in the opposite direction to its initial velocity. For example, when a car is moving forward and then applies the brakes, it starts to slow down. The acceleration of the car in this case is negative because it is moving in the opposite direction to its initial velocity, which was forward. Deceleration is an important concept in physics as it helps us understand how objects move and change their speed. It is also important in fields like engineering and transportation where deceleration rates need to be calculated to ensure the safety of people and equipment. In summary, deceleration is the negative acceleration of an object, which refers to the slowing down of its speed.

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Answer:

Nanomagnetic chips.

Explanation:

In a computer, the hard disk drive chips are magnetic.

A non-volatile data storage device is a computer hard disk drive (HDD). Non-volatile storage devices are those that retain data even after being turned off. HDDs are merely one form of storage device, yet they are required by all computers.

Desktop computers, mobile phones, consumer gadgets, and enterprise storage arrays in data centers are frequently equipped with HDDs. They can use magnetic disks to store operating systems, applications, and other things.

Hence, Hard disk drive is belongs to one of those chips which at magnetic in nature.

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Answer:

Bbbbbbbbbbbbbb. bbbbbbbbbbbbbbb

The properties of water that makes it possible for life to continue to exist in lakes covered by a thick layer of ice for many months of the year are:

The correct option is C.

The water in frozen lakes supports life because of the following properties f water;

As soon as the water turns to ice, the ice loses a lot of its water-like density and continues to float on the lake's surface. Water loses density when it grows colder below 4° Celsius, forcing water that is about to freeze to float to the top.

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Answer:

I hope it will help you have a great day bye and Mark brainlist if the answer is correct

\(kai6417\)

#carry on learning

The unit is Newton meter squared per kilogram squared \((N * m^2 / kg^2\)), which is the SI unit of the universal gravitational constant.

To determine the SI unit of the universal gravitational constant (G) using dimensional analysis, we need to consider the equation for the force of attraction between two bodies:

F = G * (\(M1 * M2) / d^2\)

Where:

F is the force of attraction between the two bodies,

G is the universal gravitational constant,

M1 and M2 are the masses of the two bodies, and

d is the distance between the centers of the two bodies.

Let's analyze the dimensions of each term in the equation:

The force (F) has the dimension of force, which is \([M * L * T^-2]\)(mass times length divided by time squared).

The product of the masses (M1 * M2) has the dimension of mass squared, which is [\(M^2\)].

The distance squared (\(d^2\)) has the dimension of length squared, which is [\(L^2\)].

Equating the dimensions on both sides of the equation, we have:

[\(M * L * T^{-2\)] = \(G * [M^2] / [L^2]\)

To balance the dimensions, we need to ensure that the units on both sides of the equation are the same. Therefore, we can conclude that the unit of G must be:

[G] = [\(M^{-1} * L^3 * T^{-2} * M^{-2} * L^{-2}]\)

Simplifying the units, we have:

[G] = \(M^{-1} * L^3 * T^{-2} * M^{-2} * L^{-2}]\)

= \([M^{-1} * L^1 * T^{-2}\)]

So, the SI unit of the universal gravitational constant (G) using dimensional analysis is:

[G] = \(N * m^2 / kg^2\)

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Statement D) Fission reactions can be explained on the basis of the conservation of mass-energy is always true when nuclear fission occurs.

Nuclear fission is a process where the nucleus of an atom is split into two or more smaller nuclei, releasing a significant amount of energy. The conservation of mass-energy, as described by Einstein's mass-energy equivalence principle (E=mc²), applies to all nuclear reactions, including fission. According to this principle, the total mass-energy before and after a reaction must remain constant.

When a heavy nucleus undergoes fission, it splits into two or more lighter nuclei, and some mass is converted into energy according to Einstein's equation. The total mass of the reactants (heavy nucleus) is greater than the total mass of the products (lighter nuclei and released energy). However, the total energy (including the converted mass-energy) remains constant.

Let's consider an example of the fission of a uranium-235 nucleus (²³⁵U) into two smaller nuclei, such as krypton-92 (⁹²Kr) and barium-141 (¹⁴¹Ba). The mass of a uranium-235 nucleus is 235 atomic mass units (u), and the combined mass of krypton-92 and barium-141 nuclei is 233. The missing mass (2u) is converted into energy according to Einstein's equation.

The conservation of mass-energy is a fundamental principle in physics, and it applies to all nuclear reactions, including fission. Therefore, statement D) is always true when nuclear fission occurs.

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The reason the far side of the moon doesn't have any large maria is due to differences in crust thickness and impact distribution.

The moon's near side has a thinner crust, which allowed for the formation of maria when large asteroid impacts penetrated the crust and caused molten lava to flood the impact basins. The far side, however, has a thicker crust, making it more difficult for impacts to create maria. Additionally, the distribution of impact events is not un

iform, with more events occurring on the near side, contributing to the lack of maria on the far side. In summary, the combination of a thicker crust and uneven impact distribution prevents the formation of large maria on the far side of the moon.

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Answer:

-10.8°, or 10.8° below the +x axis

Explanation:

The x component of the resultant vector is:

x = 3.14 cos(30.0°) + 2.71 cos(-60.0°)

x = 4.07

The y component of the resultant vector is:

y = 3.14 sin(30.0°) + 2.71 sin(-60.0°)

y = -0.777

Therefore, the angle between the resultant vector and the +x axis is:

θ = atan(y / x)

θ = atan(-0.777 / 4.07)

θ = -10.8°

The angle is -10.8°, or 10.8° below the +x axis.

Answer:

Hi can you explain more to the question your tryna ask us

Explanation:

you can do that in my comments

It is essential for a convenience store to conduct sales forecasting for a new brand of soft drink before deciding to continue to carry or remove it.

Sales forecasting is the estimation of future sales volume. In order for a convenience store to determine whether to continue to carry a new brand of soft drink, it is important for the management to carry out sales forecasting. This process helps the management to identify the potential sales volume for the product, as well as the expected revenue.

The convenience store could use various methods to forecast sales such as the time-series analysis, market research, and consumer surveys. The data obtained from these methods can be used to make an informed decision on whether to continue carrying the new brand of soft drink or remove it. Sales forecasting is an important process for any business, as it helps to determine the profitability of a product or service.

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A. the Moon broke from a rapidly spinning Earth is the most widely accepted theory of the Moon's origin, known as the Giant Impact Hypothesis or Theia Impact.

According to this theory, a Mars-sized object called Theia collided with the early Earth, and the debris ejected from the impact eventually coalesced to form the Moon.

This theory explains many of the Moon's characteristics, such as its size, composition, and the fact that it orbits the Earth in the same plane as the Earth's equator.

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The graph of x versus t for the equation x = x0 + vt + 1/2a\(t^2\)represents a quadratic relationship, resulting in a parabolic curve. If a = 0, the graph becomes a straight line.

The equation x = x0 + vt + 1/2a\(t^2\)represents the position of an object as a function of time, considering its initial position (x0), initial velocity (v), and acceleration (a). When graphed, this equation yields a parabolic curve. The shape of the parabola depends on the values of x0, v, and a. If a = 0, the equation simplifies to x = x0 + vt, which represents the motion of an object with constant velocity. In this case, the graph of x versus t becomes a straight line, indicating uniform motion. The slope of the line represents the velocity of the object, and the y-intercept corresponds to the initial position x0.

In summary, for the equation x = x0 + vt + 1/2a\(t^2\), the graph of x versus t is a parabolic curve, and if a = 0, the graph becomes a straight line representing uniform motion. The specific shape and characteristics of the graph depend on the values of x0, v, and a.

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At 12,000 feet above sea level, the temperature is 38°F if the air temperatures at sea level is 80°F.

Daniel Gabriel Fahrenheit, a scientist, initially suggested the temperature measure known as the Fahrenheit scale in 1724. (1686–1736).

The sign for the unit is indeed the letter °F, which stands for degrees Fahrenheit. There are several stories about how he first developed his scale, but according to the first publication, the lower defining point, 0 °F, was chosen as the freezing point of a brine solution that was formed by mixing water, snow, and ammonium chloride (a salt).

His best guess for the normal temperature of a person, which was initially put at 90 °F and later adjusted to 96 °F (around 2.6 °F),The other limit established was lower than the actual value (due to a subsequent revision of the scale).

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The equivalent capacitance of this circuit is = 21F. That is option A.

When capacitors are connected together in parallel the total or equivalent capacitance, CT in the circuit is equal to the sum of all the individual capacitors added together.

The four capacitors are 10 F, 3 F, 7 F, and 1 F.

Therefore the equivalent capacitance = 10 + 3 + 7 + 1=21F

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Given :

Mass of object, m = 1.5 kg.

To Find :

The momentum of boulder dropped from a cliff after 3 seconds.

Solution :

Speed of boulder after 3 seconds of free fall is given by :

v = u + gt       ( Equation of motion )

v = 0 + 10×3    ( g = acceleration due to gravity )

v = 30 m/s

Now, momentum is given by :

P = m × v

P = 1.5 kg × 30 m/s

P = 45 kg m/s

Therefore, momentum of boulder is 45 kg m/s.

Answer: Decomposition reaction.

Explanation:

Decomposition is a type of chemical reaction in which one reactant forms two or more than two products.

Decomposition reactions require breaking of bonds which require energy and thus all of the decomposition reactions are endothermic reactions. They require energy in the form of heat, electricity or sunlight and thus called as thermal, electrolytic and photolytic decomposition respectively.

The given reaction \(AB\rightarrow A+B\) is a type of decpomposition reaction.

According to Newton’s first law of motion, an object at rest will begin to move, when an unbalanced force acts upon it.

option B is the correct answer.

Newton's first law of motion, also known as the law of inertia, states that an object at rest will remain at rest, and an object in motion will continue in motion with a constant velocity unless acted upon by an external force.

In other words, an object will maintain its state of motion (whether it is at rest or moving in a straight line at a constant speed) unless a force acts upon it.

Thus, according to Newton’s first law of motion, an object at rest will begin to move, when an unbalanced force acts upon it.

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Answer:

its B

Explanation:

Answer: Which statement best describes how scientists and engineers work together in the research and development cycle? Scientists develop new technology, and then engineers use it to solve design problems.

Explanation: boom!

Answer:

The root beer exerts a force on all sides of the ice cream. These forces are all equal and cancel each other out. Gravity pushes downward on the ice cream. ... The ice cream floats because the buoyant force is greater than the weight of the ice cream.

Explanation:

The general equation of simple harmonic motion is

y = a cos (? t )or y = a sin (? t )

but here y = a cos (? t )...because at t=0 amplitude is maximum

Here amplitude 'a '= 0.01 m

m = 0.3 kg

x = 0.02 m

Force constant k is given by,

k = mg / x = 0.3 x 9.8/ 0.02 = 147 N/m

The time period of oscillation is given by ,

T = 2 ? ?( m / k )

? = 2 ? / T = ? ( 147 / 0.3 )

? = 22.1

then y = (0.01m) cos (22.1 t )

In physics, a force is a power that can change the motion of an item. A force can purpose an object with mass to alternate its pace. Pressure also can be described intuitively as a push or a pull. A force has both value and path, making it a vector quantity.

A pressure is a push or a pull and it affects our each day lives because without force, people might not be capable of open and near stuff or lift up our arms or legs.

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Answer:

Explanation:

so a mechanical wave transfers energy through a medium but unlike other waves that move through very long distances

the distance of the mechanical wave is different