Distance Versus Displacement: Which one will always be the shortest out of the 2?

So, the impulse of the ball to the wall is -12 N. It have same meaning to 12 N in opposite direction with its initial movement.

Hi ! In this ocassion, I will help you to solve the question about impulses. Impulse also relate to momentum, where the amount of impulse will cause the difference (indicated in units of direction) velocity when an object move. Impulses that have opposite direction to the original direction will have a negative value.

Impulse is the result of a change in momentum, so it can be expressed in this formula :

\(\sf{I = \Delta p}\)

\(\boxed{\sf{\bold{I = m (v' - v_0)}}}\)

With the following condition:

\(\sf{I = m (v' - v_0)}\)

\(\sf{I = 0.15 (-30 - 50)}\)

\(\sf{I = 0.15 (-80)}\)

\(\boxed{\sf{I = -12 \: N.s}}\)

So, the impulse of the ball to the wall is -12 N. It have same meaning to 12 N in opposite direction with its initial movement.

Explanation:

\( \sin(60) = \frac{ \sqrt{3} }{2} \\ \\ \sin(60 ) {}^{2} = ( \frac{ \sqrt{3} }{2} ) {}^{2} \\ \\ \sin(60 ) {}^{2} = \frac{3}{4} \)

A star is moving directly toward earth at a large fraction of the speed of light. The light we observe from this star compared to the light received from the same star if it were at rest relative to earth will be blueshifted.

The elements of Earth are land, air, water, and life. Mountains, valleys, and flat places can all be found on the ground. Different gases, namely nitrogen and oxygen, make up the air. Rain, snow, ice, rivers, lakes, oceans, and streams are all examples of water. Doppler shift is the term used in physics to describe this phenomena, which is the alteration in wave frequency caused by an observer moving in respect to the source.

But much like the other planets, Earth is a planet that exists in space and is a part of the cosmos. It so happens that life exists here and that the conditions close to this planet's surface are favourable for life as we know it. The tiny, delicate planet Earth stands out in the universe.

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Answer: Sea otter is the pioneer species in the kelp forest as it regulates and controls the population of other species in the kelp forest.

Explanation:

If sea otters are hunted and their population is brought to extinction then this will cause major harm the ecosystem of the kelp forest and it will disturb the ecological balance in the kelp forest. The herbivorous animals consumed by the sea otters will increase in population and they will consume a lot of vegetation in the forest. The kelp forest which forms the coastline will not remain effective in providing protection against the storms to the neighboring areas.

Answer:

f = 270.37 Hz

Explanation:

Given that,

The length of the long open end air column, L = 63.8 cm

The speed of sound in the air is 345 m/s

We need to find the frequency of the air column. For an open pipe, the frequency is given by :

\(f=\dfrac{nv}{2L}\\\\f=\dfrac{345}{2\times 63.8\times 10^{-2}}\\\\f=270.37\ Hz\)

So, the frequency of the air column is equal to 270.37 Hz.

Answer:

False. Its your body, you do what you want. Wanna lose weight? Then do some reasearch. Wanna keep how body how it is? Then keep it. Its your body

Explanation:

Answer:

my answer is c

Explanation:

the sound waves get closer together, increasing their frequency. This listener hears the pitch of the siren get higher. As the car speeds away from listener B, the sound waves get farther apart, decreasing their frequency.

Answer:

4.5V

Explanation:

In a arrangement of cells, the cells could be joined end to end(series) or to a common junction (parallel).

When cells are joined in series, the total emf of the cell is the sum of the individual emf of all the cells.

Hence;

Total emf = 1.5V + 1.5V + 1.5 V = 4.5 Volts

Answer:

The atomic mass of an element is the average mass of the atoms of an element, according to google. Sum of protons and neutrons in nucleus is the mass number and multiply by 1 amu gives you the mass of the atom

To determine the wavelength of the wave Martin creates when he dips his finger into a pond, he should measure the distance between two consecutive crests or troughs of the wave. This distance is known as the wavelength and is typically measured in meters. Martin can use a ruler or a tape measure to measure the distance between two crests or two troughs of the wave.

Another way to determine the wavelength is to measure the time it takes for two consecutive crests or troughs to pass a fixed point. This time is known as the period of the wave and is typically measured in seconds. Martin can then use the formula wavelength = speed of the wave x period of the wave to calculate the wavelength.

It's important to note that the wavelength of the wave Martin creates in the pond depends on a variety of factors, including the depth of the water, the speed at which Martin moves his finger, and the density of the water. Therefore, it may be necessary to perform several measurements and calculate an average value to get an accurate measurement of the wavelength.

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Answer490N:

Explanation:

Explanation:

\( \sqrt{13} + \sqrt{13} + \sqrt{} x = 180\)

\(2 \sqrt{13} + \sqrt{} x = 180\)

\( \sqrt{} x = 180 - 2 \sqrt{13} \)

\( \sqrt{x} = 172.7888974\)

\( \sqrt{ {x}^{2} } = \sqrt{172.7888974} \)

\(x = 13.14491907\)

Answer:

I will say that no 1 is incorrect

Explanation:

no 1 is incorrect because one person cant confidently and effectively carry out an investigation there should be a collective work so that when ever there is a mistake and the one leading does not notice it the sub ordinates will and it will be corrected

Voyager 2 passed closer to the southern magnetic pole of Uranus.

During its flyby of Uranus in 1986. This was determined by the measurements taken by the spacecraft's instruments, which detected the magnetic field of Uranus and allowed scientists to map its magnetic structure.

The spacecraft's trajectory and the data collected indicated that Voyager 2 passed nearer to the southern magnetic pole than the northern one. This encounter provided valuable insights into the magnetic field and overall magnetosphere of Uranus, contributing to our understanding of the planet's unique characteristics and the dynamics of its magnetic environment.

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Answer:

A point at which parts of an artifical structure are joined

Total Cost is =  $107,380 if The farm is 340 acres and had corn planted  add fertilizer to the soil before you plant this years' crop.

A fertiliser is a natural or artificial substance containing chemical elements (such as Nitrogen (N), Phosphorus (P) and Potassium (K)) that improve growth and productiveness of plants. Some synonyms include the terms "enrichment" or "plant nutrient".

Without fertilizers, nature struggles to replenish the nutrients in the soil. When crops are harvested, important nutrients are removed from the soil, because they follow the crop and end up at the dinner table. If the soil is not replenished with nutrients through fertilizing, crop yields will deteriorate over time.

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Answer: 1. 12 MPH 2. 36m 3. 8 Hz

Explanation:

Answer:

1. 12 MPH 2. 36m 3. 8 Hz

Explanation:

For #1, I multiplied 6 by 2, For #2 I multiplied 6 by 6 and for #3 it's 8 x 2

Foundation: Use a deep and sturdy foundation that extends below the frost line and is anchored to bedrock. Consider foundations or caissons, which can better withstand lateral forces during an earthquake.

Structural System: Utilize a seismic-resistant structural system such as reinforced concrete or steel framing with appropriate bracing and cross-bracing configurations. Consider incorporating a moment-resisting frame or a shear wall system, which can provide enhanced lateral stability during seismic events.

Dampers and Isolators: Include seismic dampers or isolators in the structural system to absorb or dissipate seismic energy. These can be installed at various locations, such as between floors or in the foundation, to reduce the impact of seismic forces on the building.

Diaphragms: Strengthen diaphragms, which are horizontal structural elements such as floors and roofs, to improve their resistance to lateral loads during an earthquake. Consider using diaphragms made of materials such as cross-laminated timber (CLT) or steel decking, which can provide additional stiffness and strength.

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Answer:

The kinetic energy of a spring is equal to its elastic potential energy.

The elastic potential energy is 12.5N-m or 12.5 Joules.

Explanation:

\( = \frac{1}{2} k {x}^{2} \\ = \frac{1}{2} (400)( {.25)}^{2} \\ = 12.5\)

The force due to hydrostatic pressure on the dam when the water is 75% of the way up the wall is 735,750 N

The force due to hydrostatic pressure on the dam can be calculated using the formula

P = ρghA

where P is the force, ρ is the density of the water, g is the acceleration due to gravity, h is the height of the water column, and A is the cross-sectional area of the dam.

In this case, the cross-sectional area of the dam is 100 m2 and the height of the water column is 7.5 m (since the water is 75% of the way up the wall, which is a 10m tall wall). Therefore, the force due to hydrostatic pressure on the dam is

P = 1000 kg/m3 x 9.81 m/s2 x 7.5 m x 100 m2

= 735,750 N

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The oscillator loses 0.156% of its mechanical energy during each cycle. As the system continues to oscillate, the amplitude will continue to decrease, and the percentage of energy lost in each cycle will increase.

The amplitude of a lightly damped oscillator decreases by 3.08% during each cycle, indicating that the system is losing energy with each oscillation. The percentage of mechanical energy lost in each cycle can be calculated using the following formula:

Percentage of energy lost = \($(1 - e^{-\zeta \pi})$\)

Where ζ is the damping ratio, and e is the mathematical constant approximately equal to 2.71828. The damping ratio is a dimensionless parameter that characterizes the system's response to damping. For a lightly damped oscillator, the damping ratio is small, typically less than 1.

Given that the amplitude of the oscillator decreases by 3.08% during each cycle, we can calculate the damping ratio as follows:

\($\zeta = \frac{\ln(1 - 0.0308)}{-\pi}$\)

ζ = 0.005

Substituting this value of ζ into the formula above gives us:

Percentage of energy lost = \($(1 - e^{-0.005\pi}) \times 100%$\)

Percentage of energy lost = 0.156%

Therefore, it is essential to minimize damping in mechanical systems to reduce energy loss and increase efficiency.

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With a sufficient amount of energy, one electron from an atom can be extracted.

Ionization energy is the force necessary to ionize an atom. Energy must be supplied in discrete forms rather than constantly because only one electron may be removed from an atom at a time and a certain amount of energy will be needed to remove each electron.

We can therefore claim that each electron carries energy, but that this energy is quantized rather than continuous.

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Answer:

Freefall is a special case of motion with constant acceleration because acceleration due to gravity is always constant and downward. This is true even when an object is thrown upward or has zero velocity.

When a ball is thrown up in the air, its velocity is initially upward. Since gravity pulls the object toward the earth with a constant acceleration g, the magnitude of velocity decreases as the ball approaches maximum height. At the highest point in its route, the ball has zero velocity, and the magnitude of velocity increases again as the ball falls back toward the earth.

Answer:

Acceleration from gravity is always constant and downward, but the direction and magnitude of velocity change. At the highest point in its trajectory, the ball has zero velocity, and the magnitude of velocity increases again as the ball falls back toward the earth

Explanation:

Answer:

yes every action as an equal and and opposite reaction. if you throw a tool then it will give you a reaction and you will move back.

Explanation:

According to Newton's third law of motion, when two bodies interact between them, appear equal forces and opposite senses in each of them.  

To understand it better:  

Each time a body or object exerts a force on a second body or object, it (the second body) will exert a force of equal magnitude but in the opposite direction on the first.  

So, if you as an astronaut in the described situation throw your tool  in the direction that you are traveling (in the opposite direction of the space station), according to Newton's third law, you will be automatically moving towards the station

Since this is a circular motion, we know that the we have a centripetal acceleration; we know that this type of acceleration always points towards the center of the circle. This means that the acceleration is represented by the vectors that point towards the center. Looking at them we notice that at point Z the acceleration is pointing to the right.

Therefore, the object is accelerating to the right at Z

Explanation:

The energy of a wave is given by :

\(E=\dfrac{hc}{\lambda}\)

Where

h is Planck's constant

c is the speed of light

\(\lambda\) is wavelength

Energy is inversely proportional to wavelength. Also, the relation between frequency and wavelength is inverse.

If the frequency is high, the wavelength will be shorter.

Hence, the correct options are :

Higher frequencies have shorter wavelengths.

Shorter wavelengths have lower energy.

Lower frequencies have lower energy.

The work function of potassium is approximately 3.564 x 10^-19 J.  The threshold (cutoff) wavelength for potassium is 5.33 x 10^-7 m. The frequency corresponding to the cutoff wavelength is 5.63 x 10^14 Hz.

(a) To find the work function of potassium, we need to calculate the energy of a photon with the given wavelength and equate it to the maximum kinetic energy of the emitted electrons. The energy of a photon (E) is given by the equation E = hc/λ, where h is Planck's constant (6.626 x 10^-34 J·s), c is the speed of light (3 x 10^8 m/s), and λ is the wavelength. E = hc/λ = (6.626 x 10^-34 J·s * 3 x 10^8 m/s) / (350 x 10^-9 m) = 5.66 x 10^-19 J
Since the maximum kinetic energy is given as 1.31 eV, we convert it to joules:
1.31 eV = 1.31 x 1.6 x 10^-19 J = 2.096 x 10^-19 J
Now, we can determine the work function:
Work function = Energy of a photon - Maximum kinetic energy = 5.66 x 10^-19 J - 2.096 x 10^-19 J = 3.564 x 10^-19 J
Therefore, the work function of potassium is approximately 3.564 x 10^-19 J.
(b) The threshold (cutoff) wavelength corresponds to the minimum wavelength of light required to emit electrons from the potassium surface. At this wavelength, the energy of the photon matches the work function.
E = hc/λ_cutoff = Work function
λ_cutoff = hc/Work function = (6.626 x 10^-34 J·s * 3 x 10^8 m/s) / (3.564 x 10^-19 J) = 5.33 x 10^-7 m
Therefore, the threshold (cutoff) wavelength for potassium is approximately 5.33 x 10^-7 m.
(c) To find the frequency corresponding to the cutoff wavelength, we can use the equation:
f = c/λ_cutoff = (3 x 10^8 m/s) / (5.33 x 10^-7 m) = 5.63 x 10^14 Hz
Therefore, the frequency corresponding to the cutoff wavelength is approximately 5.63 x 10^14 Hz.

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Answer:

16 mm with 14 mm inside diameter.

Compared to the initial velocity, the velocity of the ball at the maximum height is zero m/s.

We know that in the gravitational field, there is a force that acts to either accelerate or decelerate a body. If the body is accelerated, then the object must be moving in the same direction as gravity, that is, the object is moving downwards.

If the object is decelerated then the object is moving in a direction that is opposite to gravity, then the motion of the object must be slowed down continuously until the object is gradually brought to a stop.

When we through a ball upwards at a given speed, the speed of the ball would continue to decrease until  the ball would eventually attain a minimum speed of zero at the maximum height.

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