Without collecting any data, describe the motion of the puck while it is on the curved portion of the ramp - is it more similar to motion with constant velocity or motion with constant acceleration? Explain your reasoning. Assume we can ignore friction.

The total work done on the block by the force of friction is 14 J.

The work done by a force of friction is obtained from the product of the force of friction and the displacement of the object.

Mathematically, the work done by force of friction is given as;

W = Fd

where;

The given parameters include;

The total work done on the block by the force of friction is calculated as;

W = 2 N   x  7 m

W = 14 J

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The complete question is below:

what is the total work wfric done on the block by the force of friction of 2 N as the block moves a distance 7.00 m up the incline?

Option B; Her shoes need to exert a small, radially outward force on the ground to keep her body moving along the circular track.

A body can change its state of rest or motion when an external force acts on it. It is directed and has a magnitude. Force is applied at a location known as the application, and the direction in which it is applied is referred to as the force's direction. Force is the pushing or pulling of an object. When objects interact with one another, push and pull are generated. You can also describe force using words like stretch and squeeze.

A mass-containing object's velocity changes when a push or pull is applied, according to the definition of force in physics.

Motion in physics is characterised as a shift in position with respect to time. Motion is just the movement of something, as opposed to

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The Milky Way's rotation curve provides evidence for dark matter. Here's why. The correct answer is in the image

The rotation curve extends far beyond the disk of the Milky Way. Our galaxy belongs to a cluster of about 54 galaxies, the so-called local group. This map shows the distribution of about three-quarters of the galaxy.

The Milky Way and Andromeda galaxies are the largest and most massive galaxies in the Local Group of galaxies. Evidence for the existence of gravitational dark matter is evident in astronomical observations, from early observations of large movements of galaxies within clusters and of the movement of stars and gas within galaxies.

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White Dwarfs are normally approximately the size (diameter) of Earth, Neutron Stars occasionally appear as pulsars, and Black Holes have sizes determined by their Schwarzschild radii. They are all maintained by electron degeneracy pressure.

The leftover cores of extinct stars are known as white dwarfs. White dwarfs with the same mass as the Sun are roughly the same size as the Earth, and electron degeneracy pressure protects them from the crushing effects of gravity.

White dwarfs mostly experience pressure from electron degeneracy, whereas neutron stars predominantly experience pressure from neutron degeneracy. It is the boundary past which nothing or anything can elude.

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if a capacitor is connected across the feedback resistor, the circuit acts as a practical integrated circuit.is FALSE

What is practical integrated?

Because the mental process and learning information are applied, practical and integrated learning is the best type of learning. Because they are actively involved in the learning process, practical and integrated learning encourages students to greatly develop their learning skills.

The practical integrator is also called as lossy integrator as it integrates only frequencies greater than fa (i.e. higher frequencies) effectively. Thus we can have following observations from frequency response of practical integrator

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The magnitude of the amplitude of the ⁸magnetic field in the Electromagnetic wave is 36 x 10⁸ T.

The energy of an electromagnetic wave in terms of electric field is given by,

E = 1/2e₀E²

Where,

e₀ is the permittivity of free space,

E is the the electric field amplitude.

The energy of an electromagnetic wave in terms of magnetic field is given by,

E = B²/2u₀

Where,

u₀ is the permeability of free space,

B is the the Magnetic field amplitude.

Both these energies are equal hence,

We can write,

E/B = √e₀u₀

Putting the standard values of e₀ and u₀ and E,

B = 12 x 3 x 10⁸

B = 36  x 10⁸ T

So, the amplitude of the magnetic field is 36 x 10⁸ T.

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Spectroscopy is a highly valuable method of astronomical investigation. Astronomers can determine the composition, density, and temperature of celestial bodies by interpreting the light they emit or absorb.

Emission Spectra

- Emission Nebula

- Planetary Nebula

Absorption Spectra

- Titan's Atmosphere

- Sun

Astrophysics is the science that applies the methods and principles of physics and chemistry to the study of celestial bodies and phenomena. As one of the founders of astrophysics put it, astrophysics is about ``determining the nature of celestial bodies, not where they are, not their positions and movements. ”. Stars, galaxies, exoplanets, the interstellar medium, and the cosmic microwave background. Emissions from these objects are examined across all parts of the electromagnetic spectrum, and properties examined include luminosity, density, temperature, and chemical composition. Because astrophysics is such a broad subject, astrophysicists study classical mechanics, electromagnetism, statistical mechanics, thermodynamics, quantum mechanics, relativity, nuclear physics, particle physics, atomic physics, molecular It applies concepts and methods from many fields of physics, such as physics.

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The mass flow rate can be given as [tex]V=S[\frac{u_y}{2}-\frac{H^3}{12m}\frac{\delta p}{\delta x}][/tex] and when H=0 then net flow rate will be zero.

Given,

upper plate velocity = [tex]u_{s1}[/tex]

opposite plate velocity = [tex]u_{s2}[/tex]

The total velocity between the plates will be

[tex]u_y=u_{s1}+u_{s2}[/tex]

Flow rate is the velocity integrated over an area,

[tex]Q=\int \overline u \hat n \ dA[/tex]

The equation above is only valid for a flat, plane area. In general, including curved areas, the equation becomes a surface integral.

The areas would be cross-sectional.The area of a liquid passing through a pipe is the cross-section of the pipe at the section under consideration. The magnitude of the area through which the mass passes, A, and a unit vector normal to the area combine to form the vector area.

The mass flow rate ,

[tex]V=SQ=S\int\limits^H_0 \int\limits^L_0 u(y)dzdy\\\\=SL\int\limits^H_0u(y)dy\\\\\frac{V}{L}=S\int\limits^H_0[\frac{1}{2m}\frac{\delta p}{\delta x}(y^2-Hy)+\frac{u_y}{H}]dy\\\\=\frac{S}{2M}\frac{\delta p}{\delta x}(\frac{H^3}{3}-\frac{H^3}{2})+\frac{u_y}{2}[/tex]

The mass flow rate for unit width is

[tex]V=S[\frac{u_y}{2}-\frac{H^3}{12m}\frac{\delta p}{\delta x}][/tex]

if H=0 then net flow rate will be zero.

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Jose uses his cellphone as a stopwatch, he records the time it takes for ten waves to crash to his feet therefore the waves characteristics which he is measuring is referred to as the frequency and is denoted as option A.

This is referred to as a disturbance or variation that transfers energy progressively from point to point in a medium without the actual movement of the molecules.

Frequency on the other hand is referred to as the number of waves that pass a fixed point in a given amount of time and its unit is Hertz which is therefore the reason why it was chosen as the correct choice.

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a)6.8 + j8.2 ohms=10.65(50.33 deg) ohms

b)12-j6 ohms=13.41(-26.57 deg) ohms

c)6.6+j10 kohms=11.98(56.575 deg) ohms

RECTANGULAR FORMS

a) 6.8+j8.2 ohm

b)12-j6 ohm

c) 6.6+j10 kohm

POLAR FORMS

a) 10.65 angle 50.332 deg

b) 13.416 angle -26.565 deg

c) 11.982 angle 56.575 deg

Impedance, sometimes referred to as a "AC circuit," is the resistance to electricity passing through a circuit that uses an alternating current. Impedance, which is measured in Ohms, is the result of the combined action of the circuit's current-limiting elements, such as Resistance (R), Inductance (L), and Capacitance (C) (C).

The resistance to current flow in a Direct Current (DC) circuit is known as impedance, but in an AC circuit, impedance is the consequence of both the resistive (R) and reactive (X) components of the circuit. A DC circuit's electrical resistance is indicated by the letter "R," but an alternating AC circuit's resistance to current flow is indicated by the letter or symbol "Z."

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The significance or understanding of a word or sentence is referred to as semantic. The way a statement in a multi-page report is understood; the semantic significance of the sentence—is an example of semantics.

What is semantics?

Semantics is the study of the significance of language. It could as well be used on entire texts or just a single word.

For instance, despite the fact that "objective" and "final stop" have identical meanings, semantics novices analyze their somewhat different shades of importance.

Example:

1) Sam was tired [ Adj. Description]

2) My interview was yesterday [Adv. Time].

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The velocity of the 10.0kg stationary penguin after collision with a 15.0 kg penguin which has a velocity of 7.0m/s is 4.2m/s and the collision is inelastic.

Whether it is an elastic or nonelastic collision is the momentum of the system will remain the same, which is also known as the law of conservation of momentum

m1v1+m2v2 = m1u1+m2u2

where,

m1 = mass of the first object

m2= mass of the second object

v1= velocity of the first object before the collision

v2=velocity of the second object before the collision

u1=velocity of the first object after collision

u2=velocity of the second object after collision

So,

15×7 +10×0 = 15×4.2 +10×u2

⇒105 = 63 + 10×u2

⇒u2 = 4.2

Since in this whole process the loss of kinetic energy is happening via the form of heat, light, and sound so it is an inelastic collision

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The wavelength and speed of a wave are known, these can be used to find the frequency of a wave using the equation f=vλ f = v λ.

Wavelength can always be determined by measuring the distance between any two corresponding points on adjacent waves. In longitudinal waves, wavelength measurements are made by measuring the distance from one compression to the next or from one rarefaction to the next.

Forms of electromagnetic radiation such as radio waves, light waves, and infrared waves create characteristic patterns as they travel through space. Each wave has a specific shape and length. The distance between peaks is called the wavelength.

Wavelength is the distance between two wave crests and the same for wave troughs. Frequency is the number of oscillations that pass through a particular point in one second, measured in cycles per second this article discusses the relationship between wavelength and frequency.

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Some factors that might determine how hot a wire will get when it conducts electricity is Current, Material and Ambient temperature.

Resistance of the wire: The resistance of a wire determines how easily electricity can flow through it. Wires with higher resistance will tend to get hotter when conducting electricity because they resist the flow of current more than wires with lower resistance.

Current: The amount of current flowing through the wire can also affect how hot it gets. Higher current means more electrons are flowing through the wire, which can cause it to heat up more.

Length and diameter of the wire: The length and diameter of the wire can also affect how hot it gets. Longer wires or wires with a larger diameter will tend to have lower resistance, which means they will conduct electricity more easily and may not get as hot as shorter or thinner wires.

Material: The material of the wire can also play a role in how hot it gets. Different materials have different electrical conductivity and resistance properties, which can affect how hot the wire gets when conducting electricity.

Ambient temperature: The ambient temperature of the environment in which the wire is located can also influence how hot it gets. If the ambient temperature is higher, the wire may heat up more quickly due to increased thermal energy.

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The force between the two wires is 10^-5 N repulsive.  option B is the correct answer

The force is repulsive because the currents are in opposition.

From the question, we have

force (F)= μ*i1*i2/2πd

=2*10^-7*5*5/0.5

=10^-5 N

The force between the two wires is 10^-5 N repulsive.

Force:

Physics defines a force as an influence that has the power to change an object's motion. When changing its velocity, such as when moving away from rest, a massed object may accelerate as a result of a force. Being pushed or pulled is a simple way to convey force. Given its magnitude and direction, a force is a vector quantity. Using the newton SI unit, it is computed (N). The letter F represents force. As pushes or pulls are seen as forces, this can provide a clear explanation of how forces are described.

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​

​

Answer:

A. 0.88 m/s²

Explanation:

Newton's second law:

F = ma

The force is 3500 N, and the mass is 2×2000 kg = 4000 kg.

3500 N = (4000 kg) a

a = 0.88 m/s²

Thus, the baseball's momentum is measured as 6.3kg/m/s (6.3 kg/m/s).

What is the size of the average force the ball applies to the bat?

The average force acting during the bat-ball collision is therefore about two tons, with a peak force of nearly four tons, during the 0.7 millisecond contact time. There's a lot of force there.

What is the connection between collision and momentum?

During collisions between objects, momentum is a relevant concept. The total momentum before a collision between two objects equals the total momentum after the impact (in the absence of external forces). The law of conservation of momentum is this. It holds true in every collision.

What is the system's momentum following the collision?

The total momentum of two objects does not change when they collide. The sum of the individual momenta of the objects, both before and after the collision, is the total momentum. The product of an object's mass and velocity, expressed in kilogram meters per second, determines its momentum.

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The answer is 9800 J = + K.

Solution:

For this we can use energy conservation, the block starts at h=60 m, and at the top of the loop it is at h=2 x 20 = 40 m

Then:

E1 = E2

[tex]mgh_1=mgh_2+K[/tex]

[tex]mgh_1=mgh_2=+K[/tex]

[tex]50\cdot 9.8(60-40)=+K[/tex]

[tex]9800\, J=+K[/tex]

The min-height property defines the minimum height of the element. If the content is less than the minimum height, the minimum height is applied. Minimum Height means the vertical distance measured from the slope as defined herein to the lower limit of the sign or sign structure. Sample 1 Sample. Minimum height means the minimum building height permitted on a property or part of a property.

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The spot of light hit the bottom of the h = 2.2 m deep pool will hit the bottom at 4.98 m away.

Here ,

height h = 2.2 m

h1 = 1.3 m

d = 2.9 m

let the distance of spot where light hit bottom from side is l

angle of incidence , i  = arctan(2.9/1.3)

i = 65.9 degree

Using Snell's law

1 * sin(i) = 1.33 * sin(r)

1 * sin(65.9) = 1.33 * sin(r)

r = 43.4 degree

Now ,  tan(r) = (l - 2.9)/h

tan(43.4 degree) = (l - 2.9)/2.2

solving for x

l = 4.98 m

the spot Light will hit the bottom at 4.98 m away

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The probabilities regarding the sweets are given as follows:

a) both sweets were apple flavour: 5/17.

b) both sweets were blackberry flavored: 28/153.

c) the first was apple and the second was blackberry: 40/153.

A probability is calculated as the division of the number of desired outcomes by the number of total outcomes.

The sweets are chosen without replacement, hence the probability that both sweets were of apple flavor is calculated as follows:

p = 10/18 x 9/17 = 5/17.

The probability that both were blackberry flavored is calculated as follows:

p = 8/18 x 7/17 = 28/153.

The probability that the first was apple and the second was blackberry is of:

p = 10/18 x 8/17 = 40/153.

The complete problem is given as follows:

Maria has a bag containing 18 fruit drop sweets. 10 are apple flavoured and 8 are blackberry flavoured. She chooses a sweet at random and eats it. Then she chooses another sweet at random. Calculate the probability that:

a) both sweets were apple flavour

b) both sweets were blackberry flavored

c) the first was apple and the second was blackberry

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The force the seat belt exerts on a passenger in the car to bring him to a halt is  0.6 × [tex]10^{3}[/tex]

A car moving at 18 m/s crashes into a tree and stops in 1.14 s. calculate the force the seat belt exerts on a passenger in the car to bring him to a halt. the mass. of the passenger. is 69. kg

Generally the equation for the net Force  is mathematically given as

Fnet = mdv/dt

net = 69*10/1.14 = 0.6 × [tex]10^{3}[/tex]

When objects interact with one another, push and pull are generated. You can also describe force using words like stretch and squeeze.

Force is described as follows in physics:

A massed item changes its velocity in response to a push or pull.

Force is applied at a location known as the application, and the direction in which it is applied is referred to as the force's direction.

Using a spring balance, one can quantify the Force. Newton is the unit of force in the SI (N) The following list of consequences of the Force is not exhaustive.

A body at rest can move with enough force.

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The amplifier is non-inverting amplifier.

What is amplifier?

A circuit that enlarges a signal is called an amplifier. The idea behind an amplifier is to create an output signal that is a copy of the input signal but with a stronger magnitude.

What is non-inverting amplifier?

An operational amplifier circuit with a non-inverting amplifier has an output voltage that is in phase with the input voltage. The inverting op amp, which generates an output signal that is 180 degrees out of phase, is its complement. Its output and input signal are in phase. It just amplifies the signal without altering its phase. It does not invert the phase of the signal, as its name would imply.

The amplifier is non-inverting amplifier.

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The motion of the object from 0 to 6 seconds is a linear motion; the displacement of the object is zero between 0 to 2 seconds, afterwards between 2 to 6 seconds, the displacement of the object increased with increase in time of motion.

The motion of an object is described as the change in the position of an object with time.

The motion of an object can occur at;

During the motion of an object at a constant velocity, the acceleration of the object for the time period is zero.

If the motion of the object occurs at uniform velocity, the acceleration of the object will be constant.

In the given graph, we can conclude the following based on the object's motion;

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All objects descend toward the Earth's surface with a constant acceleration of g start text, g, end text in the absence of air resistance. g = 9.8 m s 2 g applies to Earth's surface.

Objects that are claimed to be falling freely do not actually experience much air resistance; instead, gravity is the only force acting on them as they fall. Regardless of their mass, all objects will fall with the same rate of acceleration under these circumstances.

The acceleration of a free falling object can be solved using algebra. The acceleration is constant and equal to the gravitational acceleration g, which at sea level on Earth is 9.8 meters per square second.

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Momentum of any system is constant in all over elastic collisions, but momentum for the system doesn't lost during inelastic collisions. so it's False.

An elastic collision is a collision wherein there's no internet loss in kinetic power withinside the gadget because of the collision. Both momentum and kinetic power are conserved portions in elastic collisions. Suppose comparable trolleys are journeying closer to every different with identical speed. They collide, bouncing off every different without a loss in speed. This collision is flawlessly elastic due to the fact no power has been misplaced.

In reality, examples of flawlessly elastic collisions aren't a part of our ordinary experience. Some collisions among atoms in gases are examples of flawlessly elastic collisions. However, there are a few examples of collisions in mechanics wherein the power misplaced may be negligible. These collisions may be considered elastic, despite the fact that they may be now no longer flawlessly elastic. Collisions of inflexible billiard balls or the balls in a Newton's cradle are such examples.

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Answer:

after water vapor condenses it is cooled down enough to turn back into a liquid and forms clouds in the air

a. The gravitational potential energy change is 449.105 kJ

b. The gravitational potential energy change is 449.105 kJ

Gravitational potential energy is the energy due to the position of an object. It is given by U = mgh where

Since the mountain is 2574 ft high, the gravitational potential energy change is given by ΔU = mg(h' - h) where

Substituting the values of the variables into the equation, we have

ΔU = mg(h' - h)

ΔU = 69 kg × 9.8 m/s²(784.56 - 120.40) m

ΔU = 69 kg × 9.8 m/s² × 664.16 m

ΔU = 449104.992 J

ΔU = 449.104992 kJ

ΔU ≅ 449.105 kJ

So, the gravitational potential energy change is 449.105 kJ

We know that the gravitational potential energy change is ΔU = U' - U = mg(h' - h) where

Substituting the values of the variables into the equation, we have

ΔU = U - U' = mg(h' - h)

ΔU = 0 - U' = 69 kg × 9.8 m/s²(784.56 - 120.40) m

ΔU = 69 kg × 9.8 m/s² × 664.16 m

ΔU = 449104.992 J

ΔU = 449.104992 kJ

ΔU ≅ 449.105 kJ

So, the gravitational potential energy change is 449.105 kJ

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The output mechanical power (in W) of the lift station is and efficiency of electric motor continuously operating with average power 3.70 kW runs the pump is 135475.2x10^3J. and efficiency is 0.065%

Given density of orange juice (ρ) = 1.25g/ml

Height of juice level (h) = 5.76m

rate of juice increases (r) = 1920000 lts/day

Through equal-diameter pipes, the liquid travels through the pumping station at the same speed as it does when leaving.

Average power = 3.70 kW = 3.7x10^3W

Time = 24h

Work done (W1) = Power x time taken = 3.70x10^3 x 24 = 88.8x10^3J

This is the difference in potential energies: the effort required to move water to a height. W2 = E1-E0  where E0 =0and E1 = mgh

m = density x volume = 1.25x10^3x1920m^3 = 2400x10^3kg

E1 = 2400x10^3x9.8x5.76 = 135475.2x10^3J

Work done (W2) = 135475.2x10^3J

efficiency = W1/W2 = 88.8x10^3/135475.2x10^3 = 0.00065 = 0.065%

Hence efficiency = 0.065%

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A certain transformer doubles input voltage. if the primary coil draws 10 a of current, then the current in the secondary coil is 5a

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The cube's velocity - both speed and direction - after the collision is  [tex]v=\frac{v_0}{5}[/tex].

What is kinetic energy conservation?

Kinetic energy, which may be seen in the movement of an object, particle, or group of particles, is the energy of motion. Any moving item uses kinetic energy, such as a person walking, a baseball being thrown, a piece of food falling off a table, or a charged particle in an electric field.

From kinetic energy conservation:

[tex]\begin{gathered}\frac{m v_0^2}{2}=\frac{m v^2}{2}+\frac{I \omega^2}{2} \\I=\frac{M d^2}{12}=\frac{2 m d^2}{12}=\frac{m d^2}{6} \\\frac{m v_0^2}{2}=\frac{m v^2}{2}+\frac{m d^2 \omega^2}{12} \\v_0^2=v^2+\frac{d^2 \omega^2}{6} \Longrightarrow(1)\end{gathered}[/tex]

From angular momentum conservation:

[tex]\begin{gathered}\frac{m v d}{2}=I \omega \\\frac{m v_0 d}{2}=\frac{m d^2 \omega}{6} \\v_0=\frac{d \omega}{3} \\d^2 \omega^2=9 v_0^2 \Longrightarrow(2)\end{gathered}[/tex]

Substituting (2) into (1):

[tex]\begin{gathered}v^2=v_0^2-\frac{3 v_0^2}{2} \\v^2=-\frac{v_0^2}{2}\end{gathered}[/tex]

The correct answer is: [tex]v=\frac{v_0}{5}[/tex]

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