The team coach is watching the bowler. She notes in Table 1 how


far the ball travels, and the time taken to reach the batsman.


Table 1


Ball


1


2


3


4


5


Time in s


0. 42


0. 46


0. 48


0. 55


0. 58


Distance in m


17. 55


18. 30


18. 40


17. 90


17. 75


Suggest a pattern, if any, between the time the ball is in flight and


the distance the ball travels.



What is the resolution of the stopwatch the team coach uses to


time the ball?

The power required to move the automobile to the top of the hill is 130,666.67 watts or 175.41 horsepower.

The power required to move an object can be calculated using the formula: power = work / time.

First, let's calculate the work done in lifting the automobile to the top of the hill. The work done against gravity is given by the formula: work = force × distance.

The force required to lift the automobile is equal to its weight. The weight of an object is given by the formula: weight = mass × acceleration due to gravity.

Substituting the given values, we have: weight = 2,000 kg × 9.8 m/s^2 (acceleration due to gravity) = 19,600 N.

The distance the automobile is lifted is 100 meters.

Therefore, the work done against gravity is: work = 19,600 N × 100 m = 1,960,000 J (joules).

The time taken to reach the top of the hill is given as 15.0 seconds.

Now, we can calculate the power using the formula: power = work / time.

power = 1,960,000 J / 15.0 s = 130,666.67 W (watts).

To convert watts to horsepower, divide the power in watts by 746 (1 horsepower = 746 watts).

power in horsepower = 130,666.67 W / 746 = 175.41 hp (horsepower).

Rounding to two decimal places, the power required to move the automobile to the top of the hill is approximately 130,666.67 watts or 175.41 horsepower.

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The  to problem of calculating the power required to move a 2,000-kilogram automobile to the top of a 100-meter hill in 15.0 seconds is given

Given, Mass of the automobile, m = 2000 knight of the hill, h = 100 time, t = 15.0 the gravitational potential energy of the automobile when at the bottom of the hill is equal to the work done in lifting it up the hill

.W = mgh= (2000 kg) (9.81 m/s²)

(100 m)= 1,962,000 J

Power is defined as the rate at which work is done, or the work per unit time. Therefore,

Power = Work / Time= 1,962,000 J / 15.0 s

= 130,800 WIn horsepower, Power = (130,800 W) / (746 W/hp)

= 175.3 hp

Therefore, the required power to move a 2,000-kilogram automobile to the top of a 100-meter hill in 15.0 seconds is 130,800 W or 175.3 hp.

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Answer:

No, gravitational force is a force having infinite range. It only reduces to an extent that astronauts cannot feel it.

Explanation:

Any rise over room temperature results in a considerable reduction in the NTC output resistance. Highly precise instruments yield a low average deviation between readings.

The average of all departures from a data set's central tendency is the average deviation of that data set. It is a tool used in statistics to evaluate the range from a mean or median. The mean value of a data set is the midpoint of all the values.

The quantity of random errors in a sample set is how accuracy is quantified. High accuracy means that, given the same conditions, the results of repeated measurements of a known value will be remarkably consistent.

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Answer:

Jupiter is the fastest whereas Venus is the slowest

Answer: The width of bands will be 2λ

Explanation: Please see the attachments below

If we have an unmarked magnet, hold it near a piece of steel and the end that attracts the steel is the north end.

What is the magnet?
A magnet is an object made of certain materials that produces a magnetic field. This field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets. Magnets are widely used throughout the world in a variety of applications, from the simple refrigerator magnet to the most advanced technologies such as MRI machines. Magnets come in many shapes and sizes and can be natural or artificial. The magnetic field of a magnet is caused by the motion of electric charges and is measured in guess.

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The direction of their vector sum is 92.51.

Finding the angle that the resultant creates with either the north-south or the east-west vector will reveal the direction of the resultant. The resultant makes an angle with west at a value of theta.

Thus, the length of the first vector G in a -35 degree direction is 40.3 m.

Let's locate the elements of G.

\(G_{x}\) = 40.3 cos (-35) = 33.018

\(G_{y}\) = 40.3 sin(-35) = -23.1151

The length of the second vector, H, is 63.3 m in the direction of 270.

\(H_{x}\) = 63.3 cos(270) = 0

\(H_{y}\) = 63.3 sin(270) = -63.3

The corresponding components can be combined to find the resultant vector:

\(R_{x} = G_{x}+H_{x}\) = 33.018+0 = 33.018

\(R_{y} = G_{y} +H_{y}\) = -23.1151+(- 63.3) = -86.4151.

To find the magnitude of (\(R_{x}, R_{y}\))  which is given by the formula \(\sqrt{R^{2} _{x} +R^{2} _{y} }\)

\(\sqrt{33.018+ (-86.4151)}\) = \(\sqrt{8557.34844}\) = 92.51.

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A skilled golfer can give a golf club head, with a mass of 250 g, a speed of 40.0 m/s. The golf ball, with a mass of 48.0 g, stays in contact with the driver's face for 0.500 ms.

To calculate the impulse imparted to the golf ball by the driver, we can use the formula for impulse, which is given by the product of the average force exerted and the time of contact. The average force can be calculated using Newton's second law, F = ma, where m is the mass of the ball and a is the acceleration. In this case, the acceleration can be calculated using the kinematic equation v = u + at, where v is the final velocity, u is the initial velocity, and t is the time of contact. Rearranging the equation, we have a = (v - u) / t. Plugging in the values, we get a = (0 - 40.0) / (0.500 / 1000) = -80,000 m/s². Substituting this acceleration and the mass of the ball into the formula for average force, we get F = (48.0 / 1000) * (-80,000) = -3840 N. Since force is a vector quantity, the negative sign indicates that the force is in the opposite direction of the velocity.

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In a magnetic field, a charged particle's trajectory is curving because of the effect of the magnetic field on the charged particle.

A magnetic field is a vector field that arises from electric currents and magnetized materials. The magnetic field is a vector field that has both magnitude and direction. A magnetic field exists in the vicinity of a magnetic material or a moving electric charge in the form of a flux of force-carrying particles known as virtual photons.

The magnetic field, like the electric field, is a fundamental entity of nature that is used in a variety of applications. In a magnetic field, charged particles follow a helical path that is nearly circular. The magnitude of the charged particle's velocity and the magnetic field's strength both influence the radius of the circle.

A charged particle's velocity vector and the magnetic field's direction are perpendicular to each other in the plane that is perpendicular to the magnetic field. The magnitude of the charged particle's velocity vector is constant throughout the motion because there is no force parallel to the velocity vector in the magnetic field.

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Answer:

The resultant displacement of the airplane in 4 hours is 212.8 km.

Explanation:

The components of the airplane's velocity and wind's velocity are:

Airplane:

\( v_{a_{x}} = v_{a}cos(45) = 70 km/h*cos(45) = 49.50 km/h \)

\( v_{a_{y}} = v_{a}sin(45) = 70 km/hsin(45) = 49.50 km/h \)

Wind:

\( v_{w_{x}} = 0 \)

\( v_{w_{y}} = v_{w} = -30 km/h \)

Now, to know the new velocity of the airplane we to find the result vector:

\( v_{x} = v_{a_{x}} + v_{w_{x}} = 49.50 km/h + 0 = 49.50 km/h \)

\(v_{y} = v_{a_{y}} + v_{w_{y}} = 49.50 km/h - 30 km/h = 19.50 km/h\)  

Now, the magnitude of the new speed of the airplane is:

\( v_{a} = \sqrt{v_{x}^{2} + v_{y}^{2}} = \sqrt{(49.50 km/h)^{2} + (19.50 km/h)^{2}} = 53.20 km/h \)

Finally, after 4 hours the resultant displacement of the airplane is:

\( x = v*t = 53.20 km/h*4 h = 212.8 km \)

Therefore, the resultant displacement of the airplane in 4 hours is 212.8 km.

I hope it helps you!                                        

Answer:

\(V_{2.2} =2.2V\)

Fast and loose: that's a classic voltage divider. the drop from the i-th resistor is \(R_i \over {\sum R}\) of the drop across the whole series. In our situation, it's \(2.2\cdot 10^3 \over {2.2\cdot10^3 + 6.8\cdot 10^3\) of 9 V. By plugging numbers in a calculator, it's 22/90 of 9V, or 2.2V

With Ohm's Law

The series is equivalent of a single resistor of Resistance \(2.2\cdot 10^3+6.8\cdot 10^3 \Omega = 9.0 k\Omega\). By Ohm's first Law (\(V=Ri\)) the current flowing through the resistor is \(9V = 9*10^3\Omega i \rightarrow i=1mA\). At this point, the drop across the first resistor is, again by Ohm's law\(V = 2.2 \cdot 10^3 \Omega \cdot 1\cdot 10^{-3} A = 2.2V\)

Answer:

2. Repulsion

Explanation:

number two is the answer

Answer:

Repulsion is the surest test which confirms that the given piece of the object is a magnet.

........

Answer:

Typically found in eukaryotic cells, centrioles are cylindrical (tube-like) structures/organelles composed of microtubules. In the cell, centrioles aid in cell division by facilitating the separation of chromosomes. For this reason, they are located near the nucleus.

Answer:

sorry im just gettig points but the actaul anserw is on top of this oneExplanation:

Bye

Answer:

Yes

Explanation:

Centripetal acceleration = a = v^2/r

A potential difference applied across a circuit drives an electric current, which is the flow of charged particles. In a conductor, such as a metal wire, the charged particles that carry the current are electrons.                                              

Protons are positively charged particles, but they are much larger and less mobile than electrons in a conductor. Therefore, they do not contribute significantly to the current flow. In fact, the protons in a conductor are generally held in place by the atomic nuclei, so they cannot move through the material. Thus, there is no proton current in a conductor with a potential difference applied across the circuit.
Protons, being part of the atomic nucleus, are held firmly within the atoms of the conductor and cannot move as freely as electrons. This difference in mobility leads to the absence of proton current in a typical conductor when a potential difference is applied across the circuit.

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Ok so it usually includes the evaluation of symptom and disorder severity, patterns of symptoms over time number, frequency, and duration of episodes, and the patient's strengths and weaknesses.

Answer:

One end of any bar magnet will always want to point north if it is freely suspended. This is called the north-seeking pole of the magnet, or simply the north pole. The opposite end is called the south pole.

Explanation:

Answer:

North Pole and South Poles

Explanation:

There is no east or west in a magnetic field of a magnet. The magnetic field lines comes from North pole to south pole.

The approximate temperature of the star as determined is D) 5500 K.

The Wien's displacement law relates the maximum wavelength of a body to its absolute temperature. Wien's displacement law states that:

λ = \(\frac{b}{T}\)

where λ is the maximum wavelength of the body, b is the constant of proportionality and T is the absolute temperature.

Thus from the given question, λ = 525 nm (525 x \(10^{-9}\)), and b = 2.9 x \(10^{-3}\) mK.

So that,

525 x \(10^{-9}\) = \(\frac{2.9*10^{-3} }{T}\)

Make T the subject of the formula to have;

T = \(\frac{2.9*10^{-3} }{525*10^{-9} }\)

  = 5523.81

T = 5523.81 K

T ≅ 5500.00 K

The approximate temperature of the star in Kelvin is 5500 K.

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Coherence is the property by which two waves with identical wavelengths maintain a constant phase relationship.

The property of coherence refers to the relationship between two waves that have the same wavelength. Coherent waves maintain a constant phase relationship, meaning that the crests and troughs of the waves are aligned at all times. This is different from incoherent waves, which have no predictable relationship between their phases.

While the amplitude and frequency of waves can also be important properties, they are not directly related to coherence. Amplitude refers to the strength of a wave, while frequency refers to the number of cycles per second that a wave completes.

Coherent waves can be important in many areas of physics and engineering. For example, lasers are able to produce coherent light waves, which allows them to be used in a wide range of applications, from surgery to data transmission. Coherent waves can also be used in interferometry, a technique used to measure small changes in distance or position.

In summary, coherence is the property by which two waves with identical wavelengths maintain a constant phase relationship. This is important in many fields of science and technology, and is particularly useful for applications that require precise measurements or control over the behavior of waves.

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Answer:

metal because A: In general, metals feel colder or hotter to the touch than other materials at the same temperature because they're good thermal conductors. This means they easily transfer heat to colder objects or absorb heat from warmer objects. Thermal insulators like plastic and wood don't transfer heat as easily.

Explanation:

If the pressure has changed, it indicates that there has been a change in the number of molecules in the system. An increase in pressure suggests an increase in the number of molecules, while a decrease in pressure suggests a decrease in the number of molecules.

When the number of molecules in a system increases, there is a higher frequency of molecular collisions with the container walls. This increased collision rate leads to a greater force exerted on the walls per unit area, resulting in an increase in pressure.

Conversely, if the number of molecules in the system decreases, there are fewer collisions with the container walls, leading to a lower frequency of collisions and a decrease in pressure.

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The hydrogen atom emission spectra provide information about the specific wavelengths or colors of light emitted when electrons transition between energy levels.

The Rydberg plot, based on the Rydberg formula, is a graphical representation of these spectral lines and helps determine the relationship between the energy levels and the observed wavelengths or frequencies.

The hydrogen atom emission spectra and the Rydberg plot are both important concepts in atomic physics that describe the behavior of the hydrogen atom and the relationship between the energy levels of its electrons.

The hydrogen atom emission spectra refers to the pattern of light emitted when the electrons in a hydrogen atom transition between different energy levels. When an electron moves from a higher energy level to a lower energy level, it releases energy in the form of photons of specific wavelengths or colors. These emitted photons create a characteristic set of spectral lines in the electromagnetic spectrum.

The spectral lines observed in the hydrogen atom emission spectra are classified into different series: the Lyman, Balmer, Paschen, Brackett, and Pfund series. Each series represents a specific range of wavelengths or energy transitions. The Balmer series, for example, includes the visible spectral lines and is commonly observed in laboratory experiments.

The Rydberg plot, named after the Swedish physicist Johannes Rydberg, is a graphical representation of the wavelengths or frequencies of the spectral lines in the hydrogen atom emission spectra. The Rydberg formula provides a mathematical relationship between the wavelengths/frequencies of the spectral lines and the energy levels of the hydrogen atom:

1/λ = \(R_H * (1/n_1^2 - 1/n_2^2)\)

where λ is the wavelength of the emitted light, R_H is the Rydberg constant for hydrogen (approximately 1.097 × \(10^7\) m⁻¹), and n1 and n2 are positive integers representing the initial and final energy levels, respectively.

By plotting the reciprocals of the observed wavelengths or frequencies against the corresponding energy level transitions, the Rydberg plot can be obtained. The Rydberg plot allows scientists to determine the Rydberg constant and study the energy structure of the hydrogen atom.

In summary, the hydrogen atom emission spectra provide information about the specific wavelengths or colors of light emitted when electrons transition between energy levels. The Rydberg plot, based on the Rydberg formula, is a graphical representation of these spectral lines and helps determine the relationship between the energy levels and the observed wavelengths or frequencies.

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The greatest distance from the Sun (aphelion) of the asteroid is 15 AU.

The perihelion distance (q) and the aphelion distance (Q) of an object in an elliptical orbit can be related using the following formula: Q = 2q - q

Given that the perihelion distance (q) is 15 AU.

We substitute value into the formula to find the aphelion distance (Q):

Q = 2(15 AU) - 15 AU

Q = 30 AU - 15 AU

Q = 15 AU.

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The maximum distance it moves up the incline plane is  5.47m.

Maximum distance, velocity of mass v = 0

Final kinetic energy, Kf = 1/2 m\(v^{2}\) = 1/2 × 10 ×\(10^{2}\) = 500j

W = ΔK = Kf - Ki

-mgdcosθμ - mgsinθd = 0 - 500j

mgd(μcosθ + sinθ) = 500j

d = 5.47m

Regardless of the starting or ending point, distance can be defined as the amount of space an object has covered. How much ground an object has covered while moving is referred to as the scalar quantity known as distance. It is the object's overall change in position, or "how far out of place an object is," that is described by the vector quantity displacement. An object's total path traveled can be used to measure distance. As an illustration. The total distance covered by an automobile is 13 km if it drives 5 km east, 8 km north, and then back again.

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Yes, it would affect the mediums sensitivity or specificity and may lead to the incorrect or undesired results, due to the error in starting MSA pH.

A change in the starting pH of MSA (methylene blue active) medium from the recommended range of 7.2-7.6 to 7.8 could affect the medium's sensitivity and specificity. Methylene blue is a pH indicator in MSA medium, which is used to identify the presence of gram-negative bacteria. The color of methylene blue changes from blue to colorless in the presence of acid produced by gram-negative bacteria. The change in pH to 7.8 would result in a less acidic environment, which could affect the ability of the medium to detect the presence of acid-producing gram-negative bacteria, leading to reduced sensitivity. Furthermore, a change in the starting pH to 7.8 could also result in false positive results, as the color change of methylene blue can also be influenced by factors other than acid production. This could lead to a decrease in specificity, as the test could be giving false positive results for the presence of gram-negative bacteria.

In conclusion, a deviation from the recommended starting pH of MSA medium can affect the medium's sensitivity and specificity and may lead to incorrect results.

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Answer:

2 meters a second or 2 m/s

A) The scale reading in Newtons is 735 N.

B)The scale reading compared with his weight is 10 times.

C) Compared to a typical elevator, the acceleration is substantially higher.

A.) The scale reading in Newtons  is calculated using the formula F = ma,

where F is the force, m is the mass of the person (75 kg), and a is the acceleration of the elevator (30 m/s2).

Thus, F = 75 kg x 30 m/s2 = 735 N.

B.) The scale reading compared with  his weight  is calculated by dividing the scale reading (735 N) by the weight of the person (75 kg). Thus, 735 N / 75 kg = 10.

C.) More than in a typical elevator is the acceleration.Elevators usually travel at much lower accelerations than 30 m/s2, making this acceleration unreasonable for this scenario.

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