when striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.9 m/s in 0.13 s . what is the acceleration of the pike during this strike?

Answer:

Displacement is the change in position of an object. To find displacement, we can subtract the initial position from the final position. In this case, the initial position is 0 m/s, since you start at rest, and the final position is 6.0 m/s south. So, the displacement is 6.0 m/s south.

Answer:

it's c length of ramp and final speed

(a) The initial speed as the armadillo leaves the ground is calculated to be 3.7 m/s.

(b) The speed of the armadillo at the height 0.544m is 1.74 m/s.

The height reached by the armadillo is 0.544 m.

The time taken is 0.2 s.

Let us use the equation of motion, s = u t + 1/2 g t²

Here, it is moving upward so, g is - 9.8 m/s².

Enter the values into the above equation, s = u t + 1/2 g t²

0.544 = u(0.2) - 1/2 (9.8) (0.2)²

0.2 u = 0.544 + 4.9(0.2)²

0.2 u = 0.74

Initial velocity u = 3.7 m/s

Initial speed with which it leaves the ground is 3.7 m/s.

(b) Let us find the speed at h = 0.544 m

v² - u² = 2 a s

v² = u² + 2 a s

v² = 3.7² + 2 (-9.8)(0.544)

v² = 13.69 - 10.66

v² = 3.03

v = √3.03 = 1.74 m/s

Thus, the speed of the armadillo at the height 0.544m is 1.74 m/s.

The given question is incomplete. The complete question is '(b) What is its speed at the height of 0.544 m?'

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The tension in the cable while the elevator is moving at a constant velocity up is supposed to be 11000N.

What do you mean by velocity?

The direction of movement of the body or object is defined by velocity. Speed is fundamentally a scalar quantity. Velocity is, in essence, a vector quantity. It is the rate at which distance changes. It is the displacement rate of change.

So,

The tension in the cable is given,

T=m(g+a)

By substituting the values of mass and acceleration given in the question we get

T=1000×(10+1)

=11000N

Hence, the tension in the cable is 11000N.

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Complete question:

A person of mass 60kg is inside a lift of mass 940kg and present the button of control panel. The lift starts moving upwards with an acceleration [tex]1.0m/s^{2}[/tex]. If g=[tex]10ms^{-2}[/tex], the tension in the supporting cable is -

According to mechanics, the claim that if you take one haltere off a fly, it will fly straight up until it runs out of energy is untrue.

What is meant by mechanics?

Physics' section of mechanics studies how objects move when subjected to forces or displacements and how those movements affect the surrounding environment. Quantum Fields and Classical Fields are the two subdisciplines.

What does engineering mechanics entail?

The study of mechanics focuses on how bodies or sections of bodies interact with one another due to applied forces. The area of mechanics known as dynamics focuses on the study of moving objects.

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If they hold on to each other after they collide, their combined speed just after the collision will be 2.6m/s

Collision: What is it?

When two bodies come into close touch with one another, a collision occurs. In this instance, the two bodies quickly exert forces on one another. The collision changes the energy and momentum of the bodies that are interacting.

For a single pair of objects with equal masses. Each ball will leave the collision with the same speed (or less) as it arrived at if we see the collision of two masses in the frame where their centers of mass are at rest.

Final speed will be 3-2 i.e. 1m/s

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The maximum energy density of any battery cell is provided by lithium, an incredibly light metal. This means that they have a higher energy capacity than single-use batteries or alkaline batteries of a similar size.

Lithium batteries are constructed of this very light metal, which has the highest energy density of any battery cell. They are therefore more energy dense than alkaline batteries or any single-use battery of a comparable size.

They also perform well in both hot and cold conditions. A battery is a device that converts chemical energy contained in its active components directly into electric energy using an electrochemical oxidation-reduction (redox) cycle.

This type of reaction uses an electric circuit to transfer electrons from one material to another.

Therefore, The batteries are still linked to the capacitors, and capacitor C1's plates have a constant – dielectric slab put between them.

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The position of third listener is y = 4m if the same wave front reaches her at the same instant it does the first two listeners.

A sound is a vibration that propagates through a medium in the form of a mechanical wave. The medium in which it propagates can either be a solid, a liquid or a gas. Sound travels fastest in solids, relatively slower in liquids and slowest in gases.

Source should be located midway x = −8m and x = 2m .

That is at x = −3m.

For the same wave front to reach at C , SC = SA = SB

[tex]5 = \sqrt{3^2+y^2}[/tex]

y = 4m

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--The complete question is, A point source of sound is located somewhere along the x-axis . Experiments show that the same wave front simultaneously reaches listeners at x=−8m and x=+2.0m . A third listener is positioned along the positive y-axis . What is her y-coordinate (in m) if the same wave front reaches her at same instant as it does the first two listeners? --

The fundamental frequency, or first harmonic, is the lowest frequency at which a string might vibrate and produce a standing wave pattern.

In the transverse situation, traveling waves have high points called crests and low points called troughs. In the longitudinal case, traveling waves have compressed points called compressions and stretched points called rarefactions.

Through the equation f = v, where v represents the speed of the waves along the string, wavelength and frequency are connected. The frequency increases with decreasing wavelength for a given value of v.

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Spending years working on a construction site can have a negative effect on a person's hearing. This is because construction sites are often loud environments, with the constant sound of heavy machinery and power tools. Over time, exposure to these loud noises can damage the delicate hairs in the inner ear that transmit sound to the brain. This damage can cause hearing loss, which may be temporary or permanent depending on the severity and duration of exposure. Additionally, the use of earplugs or other hearing protection devices may not always be possible, especially if workers need to communicate with each other or are unable to hear warning signals. This makes it even more important for workers to take steps to protect their hearing, such as wearing ear protection when possible and limiting exposure to loud noises.

According to the solving Approximately - 2.72 × 10² excess electrons on the ignition system.

An electric spark is used to ignite the fuel-air mixture in a gasoline engine, and the combustion of this mixture in the cylinders generates the motive force. Related Articles: distributor reluctor breakers spark plug electric starter.

To ignite the mixture of gasoline and air in the engine's combustion chamber at precisely the appropriate moment, the ignition system's primary function is to produce an electric spark.

Given charge  =  –1.7 × 10⁻¹⁷ C

no. of electrons = (–1.7 × 10⁻¹⁷)/(1.6 × 10⁻¹⁹)

                           = - 2.72 × 10²

According to the solving Approximately - 2.72 × 10² excess electrons on the ignition system.

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Answer:

f=1.5MHz or f=1500Hz

Explanation:

f=v/λ

3×10⁸/2×10-⁵

f=1500Hz

f=1.5MHz

Over-HCl dissolves a piece of tin foil with the dimensions 10.25 cm 5.50 cm 0.600 mm.

A thin sheet of metal that is used to wrap and cover food.

Aluminum foil is frequently used in homes to wrap meals, such as meats, to stop moisture loss while cooking, cover baking surfaces, and store food. Additionally, while grilling more delicate meals like veggies, people would cover them in aluminium foil to protect them.

At normal temperature and pressure, chlorine HCl a gas composed of the elements h and chlorine, is a gas. Hydrochloric acid is a substance made of the elements water and chlorine, which is a gas, and a solution of a gas in water.

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When the angular momentum quantum number (ell) is zero and the primary quantum number (n) is two, the only feasible value for m cell is zero.

The orbital's size is defined by the main quantum number (n). For example, bigger orbitals are possible for n = 2 than for n = 1. Electrons are drawn to the atomic nucleus of an atom because of their opposing electrical charges. Consequently, energy must be absorbed to excite an electron from an orbital where it is close to the nucleus (n = 1) into an orbital where it is distant from the nucleus (n = 2). A orbital's energy is therefore indirectly described by the primary quantum number.

The geometry of the orbital is defined by the angular quantum number (l). Spherical (l = 0), polar (l = 1), or cloverleaf (l = 2) are the best descriptions for the forms of orbitals.

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The electric field vector at one point  is the magnitude of the electrostatic force exerted per unit charge on a test charge at that point.The correct option is: (C) I and II only ,.

When charge is present in any form, a point in space has an electric field that is connected to it. The strength and direction of the electric field are expressed by the value of E, sometimes referred to as the electric field strength, electric field intensity, or simply the electric field. Without any precise information of what generated the field, simply knowing the magnitude of the electric field at a certain location is sufficient to predict what would happen to electric charges nearby.

E = [tex]\frac{F}{q}[/tex].  The vector nature of the equation allows one to find the direction of F and the equation itself allows one to find the ratio F/q, but not q specifically.

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The total of the electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity.

The electric flux through an area is defined as the electric field multiplied by the area of the surface projected in a plane perpendicular to the field.

What is electric flux?

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Blackbody radiation is a phenomenon that exhibit particle nature of light. Correct option is (B).

(a) Interference is a phenomenon in which two waves of same frequency superpose to give resultant intensity different from sum of their separate intensity. So, it cannot exhibit particle's nature of light.

(b) Blackbody radiation is a theoretical concept in quantum mechanics in which a material or substance completely absorbs all frequencies of light. It exhibit particle nature of light.

(c) Diffraction is a phenomenon in which light bends at sharp ends of an obstacle or a hole. So, it also cannot exhibit particle's nature of light.

(d) The double-slit experiment is a demonstration that light and matter can display characteristics of both classically defined waves and particles.

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The initial speed of the mug was 3.34 m/s. The answer is option E.

The potential energy of the mug when it is on the counter is converted into kinetic energy as it slides across the counter and then into potential energy as it falls off the counter, and finally back into kinetic energy as it moves horizontally towards the base.

mgh = (1/2)mv^2 + mgh_max + (1/2)mv_x^2

where m is the mass of the mug, g is the acceleration due to gravity, h is the height of the counter, v is the initial speed of the mug, h_max is the maximum height reached by the mug, and v_x is the horizontal component of the mug's velocity just before it hits the base.

v = sqrt(2gh + 2gx)

where g = 9.8 m/s^2, h = 0.86 m, and x = 1.4 m.

Plugging in the values and evaluating the expression,

v = sqrt(29.80.86 + 29.81.4) = 3.34 m/s

Therefore, the initial speed of the mug was 3.34 m/s, which corresponds to option E.

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The required value of distance the bug walks before it begins to slip is calculated to be 19.89 cm.

The normal force drops to half of the weight, F = 1/2 m g

where,

m is mass

g is acceleration due to gravity

The diameter of the spherical ball d = 38 cm

The value of the normal force is, F = m g cosθ

Equating both the equations of F, we have,

1/2 m g = m g cosθ

cosθ = 1/2

θ = π/3

The relation to find out distance is,

x = r θ = d/2 (θ)

Putting the values into the equation,

x = 38/2 (π/3) = 19.89 cm

Thus, the value of distance is calculated to be 19.89 cm.

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1. The power output in watts of an incandescent light bulb can be calculated by dividing the energy output (in joules) by the time interval (in seconds) during which the energy is produced.

In this case, the light bulb is producing 100 J of energy every 1 second, so the power output can be calculated as:

Power output (P) = Energy output (E) / Time interval (t) = 100 J / 1 second = 100 Watts

2. A 100-watt light bulb looks brighter than a 60-watt light bulb because it produces more energy and therefore emits more light. The brightness of a light bulb is directly proportional to the energy it produces.

A 100-watt light bulb produces more energy (and therefore light) than a 60-watt light bulb, so it appears brighter.

However, it is important to note that the perceived brightness of a light bulb can also be affected by other factors such as the color temperature of the light, the size of the bulb, and the reflectiveness of the surrounding area.

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The velocity of the kid is 5.6 m/s, v = w*r where r is the radius, and w is the frequency. We are aware that diameter is 18 m and that it is equivalent to twice the radius. So r = 18m/2 = 9m, v = 5.9*2pi*9m/min, v = (5.9*2pi*9/60) m/s = 5.56 m/s.

A huge disk positioned to allow it to freely rotate inside a horizontal plane makes up a merry-go-round, a playground ride.The merry-go-round has a mass of 216 kg, a radius of 1.4 meters, and is initially at rest.

A merry-go-round with such a moment of inertia of 1210 kg/m2 and a diameter of 2.5 m spins at 1.70 rad/s with very little friction.The platform slows to 1.35 rad/s when a child who is initially standing stationary next to the joyful hops onto its edge while facing the axis of rotation.

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The speed is given as 12.34 m/s. It contains 4 number of significant figures or sig figs.

The speed sensor measures the speed as 12.34 m/s.

The initial uncertain or estimated digit and all the digits known with certainty are referred to as the important figures of a measured amount. The first unknown digit is the last digit recorded in a measurement since it makes no sense to report any additional digits after it. When necessary, zeros are utilised to position the important figures correctly.

From the rules for deciding which digits in a measurement are significant, it is said that all non-zero digits in a measurement are significant.

12.34 m/s - contains all non-zero digits

Thus, it contains 4 sig figs.

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The intricate energy balance of Earth is largely derived from solar radiation. Through the Earth's atmosphere, this radiation is absorbed, deflected, scattered, and transmitted.

The reflections of light, sound, and water waves are typical examples. In the lake, mirror, and store window, he caught a glimpse of himself. The water's surface reflected the light. More instances. His gold wristwatch gleamed in the candlelight.

As an apparent mechanical wave, noise is defined by vibrations that move thru the air or the other medium.

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The average velocity would be zero because the player is running from his own goal line to the opposing team's goal line and then returning to his forty-yard line. The displacement is zero.

The average is a measure of the central tendency of a set of numbers. It is calculated by adding all the numbers in the set and then dividing by the number of values in the set. The average can be used to compare sets of data and to draw conclusions about the data. It is often used to measure the overall performance of a group or to identify trends in the data.

Average Speed =

400 yd/20.0 s = 20 yd/s

Average Velocity =

The average velocity would be zero because the player is running from his own goal line to the opposing team's goal line and then returning to his forty-yard line. The displacement is zero since the net change in position is zero. Therefore, the average velocity would be zero.

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Many men pulling on a rope to hoist a stone 1.00 m is required to build an electricity display energy in a hallway. The monitor displays 0.5 J of labor as having been finished.

What does the word "energy" mean?

The capacity to perform work is energy. Energy is referred to by scientists as the capacity for work. People have figured out how to transform energy from one type to the other and use it to accomplish tasks, making modern civilization possible. Walking, bicycling, driving, rowing, and using stoves all require the usage of energy from people.

Why is energy necessary, and what is it?

Energy is the capacity to carry out work. Energy is referred to by scientists as the capacity for work. People have figured out how to transform energy from one type to the other and use it to accomplish tasks, making modern civilization possible.

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The final charge on the first capacitor is 7.20 μC and the final charge on the second capacitor is 12.00 μC.

When placed in an electromagnetic field, the physical property of matter known as electric charge causes it to experience a force.

Positive and negative electric charges are the two types of charges that charge carriers, protons and electrons, commonly carry. The movement of charges produces energy.

The initial charge on the first capacitor, 1, can be calculated using the formula as follows:

Q = C × V

where,

Q is the charge,

C is the capacitance, and

V is the voltage.

By substituting the values, we get:

Q = 2.40 μF × 8.00 V

= 19.2 μC

Let's call the final charge on the first capacitor 1,f and the final charge on the second capacitor 2,f.

So, the two capacitors are now connected in parallel, their equivalent capacitance is C_eq :

C_eq = C1 + C2

C_eq = 2.40 μF + 5.60 μF

= 8.00 μF

The final charge on the equivalent capacitance is equal to the initial charge on the first capacitor,

Q_eq = Q1,f = 19.2 μC

From this, we can calculate the final charge on each capacitor:

Q1,f = (C1 / C_eq) × Q_eq

Q1,f = (2.40 μF / 8.00 μF) × 19.2 μC

= 7.20 μC

Q2,f = (C2 / C_eq) × Q_eq

Q2,f = (5.60 μF / 8.00 μF) × 19.2 μC

= 12.00 μC

Thus, The final charge on the first capacitor is 7.20 μC and the final charge on the second capacitor is 12.00 μC.

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As battery is rated for 1.6 Ah, it delivers maximum current of 1.6 Ah / 14 hours = 0.114 A over 14 hours. Assume battery is fully charged.

An ampere-hour, or Ah, is a measure of the charge stored in a battery and can be used to calculate the maximum current that can be drawn from the battery over a certain time period.

The amount of current that can be delivered over 14 hours by a 1.6 Ah battery can be calculated by dividing the battery's capacity by the time period:

I = Q / t

where I is the current, Q is the charge stored in the battery (1.6 Ah), and t is the time period (14 hours).

Since the battery is rated for 1.6 Ah, it can deliver a maximum current of 1.6 Ah / 14 hours = 0.114 A over 14 hours. This assumes that the battery is fully charged and that no other losses, such as internal resistance or self-discharge, are taken into account.

It's important to note that the actual current that can be delivered may be lower than the calculated value, especially as the battery discharges. The actual current will depend on various factors, including the battery's internal resistance, the voltage drop across its terminals, and the load applied to the battery.

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The change in gravitational potential energy from point A to point B is calculated to be 1.176 J.

Gravitational potential energy is given by the formula, ΔU = m g h

where,

m is mass of the pendulum

g is acceleration due to gravity

h is change in height

Here, in this problem, m is given as 1.5 kg

g is 9.8 m/s²

h is equal to yB - yA = 0.12 - 0.08 = 0.04 m

The change in gravitational potential energy from A to B is,

ΔU = (1.5 kg)(9.8 m/s²)(0.08 m) = 1.176 J

Thus, the change in gravitational potential energy from A to B is 1.176 Joules.

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Speed = (497.15 - 497.21) x 2.9979 x 10^8 m/s = -7.41 x 10^7 m/s

The speed of a distant star relative to the Earth is determined by calculating the difference between the measured wavelength of a certain emission line and the normal wavelength of that emission line, then multiplying that difference by the speed of light. In this case, the measured wavelength is 497.15 nm, and the normal wavelength is 497.21 nm, so the difference is -0.06 nm. Multiplying this difference by the speed of light (2.9979 x 10^8 m/s) yields a negative speed of -7.41 x 10^7 m/s, indicating that the star is moving away from the Earth.

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The 2nd lowest standing wave frequency possible when one side o the tube is sealed is 600 Hz.

In physics, frequency is the number of waves that pass a fixed point in a unit of time as well as the number of cycles or vibrations that a body in periodic motion experiences in a unit of time.

When a body in periodic motion goes through a series of events or positions before returning to its initial state, it is said to have experienced one cycle or one vibration.

Fundamental frequency of  tube open = 400 Hz.

Hence, the 2nd lowest standing wave frequency possible when one side o the tube is sealed is = 400 × (1 + 1/2) Hz

= 600 Hz.

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