R₂ 8. A cylindrical puck has a mass M and radius R₂, and has an inner ring cut out. The inner cutout has a radius R₁. a) Find the moment of inertia of the puck with respect to the axis in the fi

Answer:

sup cuh,  i just want the point lol

Explanation: sorry not sorry reases

Answer:

The kinetic energy is 16 joules.                        

Explanation:

Kinetic energy (E) is given by:

\( E = \frac{1}{2}mv^{2} \)

Where:

m: is the mass

v: is the speed

When the kinetic energy is 4 joules, the speed of the object is:

\( v_{1}^{2} = \frac{2E_{1}}{m} = \frac{8}{m} \)                         

Now, if the speed is increased twice then we have:

\( E_{2} = \frac{1}{2}mv_{2}^{2} = \frac{1}{2}m(2v_{1})^{2} = \frac{1}{2}m[4(\frac{8}{m})] = 16 J \)

Therefore, the kinetic energy is 4 times the initial value.  

I hope it helps you!                                

Answer:

flujo de energia

Explanation:

The proportion of hydrogen to helium in the red giant is infinitesimally small.

A red giant is a stage in the star life where hydrogen gets fused with helium. Stars are on the zero main sequences when they initially begin to fuse hydrogen to helium. The length of time a star remains in the main-sequence stage is proportional to its mass.

Higher-mass stars finish each stage of development faster compared to lower-mass stars. When a star(e.g. sun) dies, it becomes a red giant composed of majorly helium. The synthesis of hydrogen to produce helium alters the inner composition of a star, causing variations in its temperature, brightness, and width.

Therefore, we can conclude that the proportion of hydrogen to helium in the red giant is infinitesimally small.

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Answer:

199,430Joules

Explanation:

Gravitational potential energy is the energy possessed by a falling object due to virtue of its position.

gravitational potential energy = mass * acceleration due to gravity * height

gravitational potential energy = 55 * 9.8 * 370

gravitational potential energy = 539 * 370

gravitational potential energy = 199,430

Hence the total change in the skier's gravitational potential energy is 199,430Joules

ANSWER:

99,430 Joules (in multiple choice question sometimes appear as 200,000J)

Explanation:

Gravitational potential energy is the energy possessed by a falling object due to virtue of its position.

gravitational potential energy = mass * acceleration due to gravity * height

gravitational potential energy = 55 * 9.8 * 370

gravitational potential energy = 539 * 370

gravitational potential energy = 199,430

Hence the total change in the skier's gravitational potential energy is 199,430 Joules (or 200,00J)

please heart!VVV          or stars :D vvv

The particles in Figure 22.46 exhibit signs of both positive and negative charges.

In Figure 22.46, the presence of both positive and negative charges can be inferred based on the observed behavior of the particles. The interaction between charged particles can be explained through the principles of electrostatics. When two particles carry the same type of charge, they repel each other, while particles with opposite charges attract each other.

By observing the behavior of the particles in Figure 22.46, we can identify the signs of their charges. For instance, if two particles move away from each other or repel each other, it indicates that they possess the same charge. This behavior is characteristic of particles with either positive or negative charges.

Conversely, if two particles move closer together or attract each other, it suggests that they possess opposite charges. This behavior is indicative of particles with opposing charges, where one carries a positive charge and the other carries a negative charge.

It's important to note that the exact nature of the charges cannot be determined solely based on the behavior of the particles in Figure 22.46. Further information or experimental data would be required to ascertain whether the charges are positive or negative. Nevertheless, the observed repulsion and attraction between the particles provide clear indications of the presence of both positive and negative charges.

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Answer:

I answered this question in the comments.

Explanation:

Please stop spamming the website.

A cooler made of copper will do the best job of conducting heat.

Copper has the highest thermal conductivity compared to aluminum, silver, and glass. Thermal conductivity refers to the ability of a material to transfer heat. Copper can transfer heat quickly and efficiently, making it a popular choice for heat sinks and cooling devices. Aluminum also has good thermal conductivity, but not as high as copper.

Silver has even higher thermal conductivity than copper, but it is not as commonly used due to its high cost. Glass has very low thermal conductivity and is not a good conductor of heat. In summary, if you are looking for a material that will do the best job of conducting heat for a cooler, copper is the best choice due to its high thermal conductivity.

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Answer:

time graph reveals pertinent information about an object's velocity. For example, a small slope means a small velocity; a negative slope means a negative velocity; a constant slope (straight line) means a constant velocity; a changing slope (curved line) means a changing velocity.

Answer:

the answer is in the pic below :)

Explanation:

The frequency stays the same and the wavelength increases.

Explanation;

Sound waves are a type of mechanical wave which requires a material medium for transmission. The transmission of such waves occurs as a result of vibration of particles in the material medium. The faster the vibration of the particles the higher the speed of the sound waves.

When a sound enters a new medium where the sound travels faster, it means the vibration of particles is high, and the wavelength of the waves increases which means the speed of the wave has increased. The frequency on the other hand will remain constant.

Answer:

A. The frequency stays the same and the wavelength decreases

Explanation:(Plato)

Answer:

a. normal

Explanation:

In the field of physics the normal is a line drawn at a right angle to a barrier. In other words the normal line is the line that is drawn perpendicular (right angle, 90 degrees) to the reflective surface of a mirror, or the particular boundary in which refraction occurs at the point of incidence of a light ray. This can be seen in the picture attached below.

Answer:

Relative to the ground, the velocity of the aircraft is 240 km/hr

Explanation:

Relative velocity is different from normal velocity;

When 2 objects are moving in opposite directions towards each other, they will appear to be faster than they actually are;

This is known as the relative velocity;

The information tells us we have the aircraft moving 320 km/hr northwards relative to the wind;

The wind is in the opposite direction at 80 km/hr;

R = relative velocity of the aircraft

v = actual velocity of the aircraft

w = velocity of the wind

R = v + w

Note: if the wind was moving in the same direction, the formula would be R = v - w

320 = v + 80

v = 320 - 80

v = 240

The velocity relative to the ground is simply the actual velocity as the ground doesn't move;

So, relative to the ground, the velocity of the aircraft is simply 240 km/hr

...the acceleration of an object equals the net force acting on it divided by its mass, or a=Fm.

Answer:

sorry I don't understand

Explanation:

please translate it in english

The intensity of the light transmitted by the second filter is \($\frac{i_0}{2} \cos^2(\theta)$\), which decreases as the angle \($\theta$\) between the axis of the second filter and the vertical increases. Option C is correct.

When an unpolarized light beam is incident on a polarizing filter, it gets polarized along the axis of the filter. In this case, the first filter has a vertical axis, so the light transmitted by the first filter will be vertically polarized with an intensity of i0/2, as half of the unpolarized light is absorbed by the filter.

Now, the vertically polarized light passes through the second filter, which has an axis inclined at an angle of \($\theta$\) with respect to the vertical. The intensity of the light transmitted by the second filter can be found using Malus' law, which states that the intensity of light transmitted through a polarizing filter is proportional to the square of the cosine of the angle between the polarization axis of the filter and the direction of the incident light.

Thus, the intensity of light transmitted by the second filter is given by:

I = \($\frac{i_0}{2} \cos^2(\theta)$\)

where I0/2 is the intensity of the vertically polarized light transmitted by the first filter.

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Complete question:

A beam of unpolarized light with intensity i0 passes through two filters. The first filter has a vertical axis, and the second filter has an axis inclined at an angle of $\theta$ with respect to the vertical. Which of the following statements is true?

A) The intensity of the light transmitted by the first filter is i0.

B) The intensity of the light transmitted by the second filter is i0.

C) The intensity of the light transmitted by the second filter is i0/2.

D) The intensity of the light transmitted by the second filter depends on the value of $\theta$.

Complete question :

A flight attendant pulls her 70 N flight bag a distance of 318 m along a level airport floor at a constant velocity. The force she exerts is 41 N at an angle of 57° above the horizontal.

(a) Find the work she does on the flight bag.

(b) Find the work done by the force of friction on the flight bag.

(c) Find the coefficient of kinetic friction between the flight bag and the floor.

Answer:

7107 J ; - 7107 J ; 0.55

Explanation:

Given that :

Distance, d = 318m

Applied force = 41 N

θ = 57°

A.) Workdone = Force exerted along direction of motion

Workdone = applied Force * distance * cosθ

Workdone = 41 * 318 * cos57 = 7101.0037

Workdone = 7,101 J

B.) Workdone by force of friction on flight bag:

- 7,101 J (since the body moves at constant velocity)

C.)

Coefficient of kinetic friction (μ) = Frictional force / normal reaction)

μ = F / N

Frictional force, F = Workdone by friction / distance

F = 6200 / 318

F = 19.47N ;

Ff = weight of Flight bag = 70 N

N = Ff - Fsinθ

N = 70 - applied Force sinθ

N = 70 - 41sin57

N = 70 - 34.385493

N = 35.614506

μ = 19.47 / 35.614506

μ = 0.5466873

The work required to move an object in the force field f=x,3 along the straight line from a(0,0) to b(6,4) can be calculated by integrating the force over the path from a to b.

The force field is given by f=x,3, which means that the force is given by f(x,y)=x,3. The work is given by W=∫(a,b)f(x,y)dx. From this equation, we can see that the work is just the integral of the force along the path from a to b.

In order to determine whether the force is conservative or not, we need to calculate the curl of the force field.

The curl of the force field is given by ∇f = (3,1). Since the curl is not zero, the force is not conservative. This means that the work done by the force field depends on the path taken.

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Explanation:

0.10kg

0.5kg×0.2kg=

0.10

Explanation:

1/R = 1/R1 + 1/ R2

1/R = 1/960 + 1/640

1/R = 5 / 1920

So , Req = 384 + R3

Req = 384 + 180

\(\huge\red{A}\pink{N}\orange{S}{W}\blue{E}\green{R} \)

Answer:

I am happy with you the father said to his daughter

Equipotential lines and electric field lines must always be perpendicular because of the concept of work. This is because equipotential lines and electric field lines must always be perpendicular to each other in order for work to be done in an electric field.

To understand why, let's start by defining these terms. Equipotential lines are imaginary lines that connect points in a region where the electric potential is the same. Electric field lines, on the other hand, represent the direction and strength of the electric field at different points. The concept of work is related to the transfer of energy. In the case of electric fields, work is done when a charged particle is moved from one point to another within the field. The amount of work done depends on the electric potential difference (voltage) between the two points and the charge of the particle.
Now, let's consider a scenario where equipotential lines and electric field lines are not perpendicular. If they were not perpendicular, it would mean that there is a component of the electric field along the equipotential lines. In this case, if we were to move a charged particle along an equipotential line, no work would be done because the electric field would be parallel to the movement of the particle.
However, work can only be done if there is a component of the electric field along the path of the particle. This means that the electric field lines and equipotential lines must be perpendicular to each other. When they are perpendicular, the electric field is always perpendicular to the equipotential lines, allowing work to be done when a charged particle is moved along an equipotential line.

Therefore, equipotential lines and electric field lines must always be perpendicular to each other in order for work to be done in an electric field.

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Answer:

The answer is "36 grams".

Explanation:

In this question, the weight of the ball is not mentioned but is the weight of the cookies is declared, which is equal to 36 grams, and all the cookies are squeezes into the ball and after that, it calculates the overall weight so, let assume that ball weight is =0 and then the overall weight is:

\(=\text{weight of ball + cookies weight}\\\\=0+36 \ grams \\\\=36 \ grams\)

The kinematics to find the time to go from the office to the living room is: 2.81 s

Given Parameters

To find

Kinematics allows us to find the relationships between the position, velocity and acceleration of bodies, let's use the relationship  

             x = v₀ t + ½ a t²

Where x is the position, v₀ the initial velocity, at acceleration and t the time

In this case, as he leaves the office, the initial velocity is zero.

           x = ½ a t²

            t = \(\sqrt{\frac{2x}{a} }\)

Let's calculate

           t = \(\sqrt{\frac{2 \ 125}{4} }\)

          t = 2.81 s

In conclusion, using the kinematics, we find that the time to go from the office to the classroom is: 2.81 s

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Renewable resources are always available to use.

Energy obtained from natural resources that are renewed more quickly than they are used up is referred to as renewable energy.

Such sources that constantly get renewed include the sun and the wind, for example. There are many different renewable energy sources all around us.

Despite requiring some time and work to replenish, other natural resources are still considered as renewable. Furthermore, the majority of precious metals are regarded as renewable due to their reusability. Because they are not damaged in the process of extraction and usage, they may be recycled.

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When two loud stereos are simultaneously playing the same music side-by-side, the decibel level of their combined sound will increase by 3 dB. This is because of the phenomenon of constructive interference.

A decibel level is measured on a logarithmic scale and represents a ratio of the sound pressure level to a reference value. The reference value is usually taken as the threshold of human hearing at 0 decibels (dB). The formula to calculate the decibel level of a sound is: Decibels (dB) = 10 log (P/P0)where P is the sound pressure level and P0 is the reference pressure level of 20 micro pascals (µPa). For example, the sound of a normal conversation has a sound pressure level of about 60 dB. So, when two loud stereos are simultaneously playing the same music side-by-side, their combined decibel level will increase by 3 dB due to constructive interference. This means if each stereo is producing a sound pressure level of 90 dB, their combined sound pressure level will be 93 dB (90 dB + 90 dB + 3 dB).

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The answer is a Telescopic gauge.

A Telescopic gauge is a tow point transfer gauge that can be used with an outside micrometre to measure inside diameter.

What is Telescopic gauge?

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Answer:

A, 0.050 Hz

Explanation:

1) Frequency = speed divided by wavelength

time is 2* 60 = 120 seconds

distance = 6 wave lengths

speed = distance divided by time

speed = 6 wave lengths divided by 120

Hope this helps!

The density of protons in the beam is 1.00 x 10¹⁰ protons per cubic meter.

This can be calculated using the equation density = current density / (charge of proton x velocity), where the charge of the proton is 1.60 x 10⁻¹⁹ Coulombs and the velocity is 1.00 x 10⁵ m/s.

The density of a beam of protons can be affected by a number of factors, such as the beam current, the particle energy, and the number of protons in the beam. As the beam current (the rate of protons moving through the beam) increases, the density of protons in the beam increases, and vice versa.

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