. One end of a uniform wire of length Land of weight Wis attached rigidly to a point in the roof and a weight Wis suspended form its lower end. If 'S' is the area of cross- section of the wire, then find the stress in the wire at height (3L/4) from its lower end ? 1) 3) w₁ +(3w/4) 1 S W₁ + W 4 2) 4) w+(3w₁/4) S 3w₁ + (w/4) S​

The critical speed below which the rope would become slack when the bucket reaches the highest point in the circle is determined by the length of the rope and the radius of the circle.

When the bucket is at the highest point in the circle, it is momentarily at rest and the tension in the rope must be zero.

The formula for calculating the critical speed at which the rope becomes slack is:

v = √(gr)

where v is the critical speed, g is the acceleration due to gravity, and r is the radius of the circle.

For example, if the radius of the circle is 2 meters and the acceleration due to gravity is 9.8 m/s², the critical speed would be:

v = √(9.8 × 2) = 4.4 m/s

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The alignment of the sun, earth, and moon during a full moon creates the maximum illumination of the moon as seen from the earth. The moon rises as the sun sets, and it appears to be directly opposite the sun in the sky.

During a full moon, the sun, earth, and moon are aligned in a straight line with the earth in the middle. The sun is on one side of the earth, and the moon is on the opposite side of the earth.

The moon orbits around the earth, and as it does so, it reflects sunlight back towards the earth. During a full moon, the side of the moon facing the earth is fully illuminated by the sun, and the entire disk of the moon is visible from earth.

The alignment of the sun, earth, and moon during a full moon creates the maximum illumination of the moon as seen from the earth. The moon rises as the sun sets, and it appears to be directly opposite the sun in the sky. The full moon is a well-known and celebrated event in many cultures, and it occurs approximately once every 29.5 days, which is the length of a lunar cycle.

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Answer:

a. T₂ = 60 N

b. W = 25.98 N

Explanation:

a.

Taking right side as positive x direction, the equation for sum of forces in x-direction can be written as follows:

\(T_{2}Sin\ 30^o - T_{1} = 0\\T_{2}Sin\ 30^o = T_{1}\\T_{1} = (T_{2})(Sin\ 30^o)\\where,\\T_{2} = 30\ N\\Therefore,\\T_{1} = (30\ N)(Sin\ 30^o)\\\)

T₁ = 15 N

b.

Taking upward direction as positive y direction, the equation for sum of forces in y-direction can be written as follows:

\(T_{2}Cos\ 30^o - W = 0\\T_{2}Cos\ 30^o = W\\W = (30\ N)Cos\ 30^o\\\)

W = 25.98 N

Answer:

muscular force in relative to this

Biomass, Fossil Fuels, Hydroelectric, Solar Energy

Answer: 1. Spinning a magnet inside a coil. Electromagnetic induction IOW

2. Photo electricity

3. Thermo electricity

The potential difference between the plates after the battery is disconnected is equivalent to the potential difference produced by the charge separated by the capacitor.

This is given by the formula; V = Q/C

Where V is the potential difference, Q is the charge stored by the capacitor, and C is the capacitance of the capacitor. Since the battery is removed after charging, the capacitor would still retain its charge, which is calculated using the capacitance and potential difference given in the question.

IQ = VCQ = (12.0 V) (4.50 x 10-7 F)Q = 5.40 x 10-6 C

Substituting the value of charge in the formula, the potential difference between the plates after the battery is disconnected is given by;

V = Q/CV = 5.40 x 10-6 C / 4.50 x 10-7 FV = 12.0 Vb.

Potential Difference After Sheet of Teflon is Inserted: If a sheet of Teflon is inserted between the plates of the capacitor, the capacitance of the capacitor would change. This is because the dielectric constant of Teflon is greater than that of air or vacuum, which increases the capacitance.

The formula for calculating capacitance with a dielectric inserted is; C = ε0A/

where C is the capacitance, ε0 is the permittivity of free space, A is the area of the capacitor plates, and d is the distance between the plates.

With Teflon inserted, the new capacitance of the capacitor is given by; CT = Kε0A/where K is the dielectric constant of Teflon, which is given as 2.10 for Teflon. The new capacitance is therefore; CT = (2.10) (8.85 x 10-12 F/m) (0.400 m2) / 1.00 x 10-3 mCT = 7.46 x 10-11 F

The potential difference after the sheet of Teflon is inserted is given by the formula;V = Q/CT

Where V is the potential difference, Q is the charge stored by the capacitor, and CT is the new capacitance of the capacitor with Teflon inserted.

The charge stored in the capacitor would remain constant, which is 5.40 x 10-6 C from part a of the question. Substituting the values in the formula gives;

V = 5.40 x 10-6 C / 7.46 x 10-11 FV = 7245.56

The potential difference between the plates after the sheet of Teflon is inserted is 7245.56 V.

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Answer:

1.42

Explanation:

got it right on my homework

Answer:A

Explanation

B a compound can ha e the same properties as it’s elements

C water is H2O- Hydrogen and oxygen

D water is the most common compound

Therefore A must be correct

Answer:

The reaction force is the force that causes the ball to move toward the bat.

Explanation:

Answer:

D; the reaction force is the force of the ball on the bat.

Explanation:

Answer:

La magnitud de la masa del peso es 78.447 libras-masa.

Explanation:

La tensión es una fuerza de reacción de la cuerda causada por la acción de una fuerza externa. En este caso, esa fuerza externa es el peso que cuelga en el centro de la cuerda. Abajo hemos adjuntado una representación simplificada del enunciado.

Por las leyes de Newton, tenemos la siguiente ecuación de equilibrio conformada por tres fuerzas:

\(\vec T_{1} + \vec T_{2} + \vec W = (0, 0)\, [N]\) (1)

Donde:

\(\vec T_{1}\), \(\vec T_{2}\) - Tensiones a cada lado de la cuerda, en newtons.

\(\vec W\)- Peso, en newtons.

Si sabemos que \(\vec T_{1} = T\cdot (\cos \alpha, \sin \alpha)\), \(\vec T_{2} = T\cdot (-\cos \alpha, \sin \alpha)\) y \(\vec W = W\cdot (0, -1)\), entonces tenemos la siguiente ecuación vectorial:

\(T\cdot (\cos \alpha, \sin \alpha) + T\cdot (-\cos\alpha, \sin \alpha) + W\cdot (0, -1) = (0,0)\)

\(T\cdot (0, 2\cdot \sin \alpha) = W\cdot (0, 1)\)

Esto permite reducir la anterior expresión a una fórmula escalar:

\(2\cdot T\cdot \sin \alpha = W\)

Donde \(\alpha\) es el ángulo de inclinación de la cuerda, medido en grados sexagesimales.

El ángulo de inclinación de la cuerda se determina mediante la siguiente fórmula trigonométrica inversa es:

\(\alpha = \tan^{-1} \left(\frac{2\,ft}{10\,ft}\right)\)

\(\alpha \approx 11.310^{\circ}\)

Si conocemos que \(\alpha \approx 11.310^{\circ}\) y \(T = 200\,lbf\), entonces la magnitud del peso es:

\(W = 2\cdot (200\,lb)\cdot \sin 11.310^{\circ}\)

\(W \approx 78.447\,lbf\)

En el Sistema Imperial, las fuerzas son medidas en forma gravitacional, entonces la magnitud de la fuerza gravitacional del peso equivale a la magnitud de su masa. En síntesis, la magnitud de la masa es \(78.447\,lbm\).

La magnitud de la masa del peso es 78.447 libras-masa.

Answer: 1.64 x 10^19 atoms

Explanation:

After 2018 years, the sample of c-14 will contain 1.64 x 10^19 atoms. This is calculated by using the equation A = A0 * e^(-k * t), where A is the amount of atoms present after a certain amount of time, A0 is the initial amount of atoms, k is the radioactive decay constant, and t is the amount of time that has passed. Plugging in the values, we have 1.64 x 10^19 = 2.70 x 10^19 * e^(-0.00012 * 2018). Therefore, after 2018 years, the sample of c-14 will contain 1.64 x 10^19 atoms.

Judgement-acceptance is NOT one of the dialectical tensions that Baxter and Montgomery address in their theory of relational dialectics.

The Baxter and Montgomery theory is a model used in psychology to describe different parts of dialectics.

The Baxter and Montgomery theory put special emphasis on the existence of different layers (dimensions) in dialectics.

The Baxter and Montgomery theory is used to treat dialectical tensions by selecting autonomy over interdependence.

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Tempreture √12 is  degrees Celsius per meter.

What is tempreture?

tempreture is the degree of hotness or coldness of any kind of objects.

Sol-

The highest rate of temperature increase is given as 6degrees as per the question

imagine this high rate as a diagonal vector pointing in the northeast direction.

This vector has an x component (horizontal, or east) and a y component (vertical, or north).

The highest rate (maximum) is found as the magnitude of these two components.

It is the square root of (x^2)+(y^2).

6= √((x^2)+(y^2))

-> Take the square of both sides to remove the square root on the right side of the equation.

36 = (x^2)+(y^2)

-->The x^2 and y^2 values each must equal 8 in order to get:  12

(x^2) = 12

x = √12

(y^2) = 12

y = √12

If the object moves directly north, it is therefore moving only in the y-direction.

Thus, it is increasing tempreture at a rate of √12 degrees Celsius per meter.

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1. As he climbs... He's gaining potential Energy.

PE=mgh = 60x9.8x3.5=2058J. This is the potential Energy gain.

2. Power = Workdone/Time.

65kW=65,000watts

65000=Workdone/35

Workdone=65,000 x 35=2,275,000J

Recall... Workdone=Force x Distance

given distance =17.5m

Force =Workdone/distance

=2,275,000/17.5

Force=130,000N or 130kN.

3.Potential Energy Increases or decreases as height increases or decreases respectively.

a) PE=mgh =25x9.8x425=104,125J.

b) change in PE=mg(h°-h) =25 x 9.8(225-425)

= -49000J. The Energy is negative because the system loses 49000J.

4. At Constant velocity; d=vt

where d=distance,v=velocity, t=time

v=d/t

1.8km=1800m

10min =10x60=600seconds

v=1800/600

v=3ms-¹

KE=1/2Mv²

=1/2 x 45 x 3² =202.5J.

5.Mary weighs 505N.

Weight=Mass x acceleration due to gravity

W=mg

505=m x 9.8

m=505/9.8 =51.53kg.

Since Mary is coming down... she's decreasing her potential energy cos Potential Energy Decreases as you decrease your height. So Her Initial height was 5.5m... she alighted to the ground which we'll say is the ground(h=0)

Change in PE=mg(h°-h)=51.53 x 9.8(0-5.5) = -2777.5J.

This energy is negative because she lost potential Energy.

6. Since each has a Mass of 45kg... and they're moving together.... Their combined Mass =45+45=90kg.

Velocity given as =10ms-¹

a)Combined KE=1/2MV² = 1/2 x 90 x 10² =4500J.

b)Ratio of combined Mass to Katias mass = CM/KM

Where CM=Combined Mass

KM=Katia's mass

=90/45 =2:1

c) Katia's kinetic E =1/2 x 45 x 10² =2250J.

Ratio of combined to Katia's = CK/KK

CK=Combiner Kinetic Energy

KK=Katia's kinetic energy

= 4500/2250 =2:1.

This answer should be the same cause from the Formula KE=1/2mv²

KInetic Energy varies Directly with Mass

so If the ratio of Masses is 2:1... That of KE should be the same because of their direct Relationship✌.

7.The height at which the Rocket Engine stops is not how far it went. Theres a Minute height that it'll still go before it starts going back down.

from the question... The energy when the engine stops is 1960J

PE=mgh

1960=10x9.8xh

h=1960/98 =20m.

The engine stops at this height

but The additional Minute height that was added before itll start falling cant be calculated from the insufficient info given in this question. If we had the Energy at the additional height-added... We can calculate that height and then subtract 20 from it. That will give the additional added height.

Thats pretty Much Everything✌

Spectro... Out

The energy in the system containing DeAnna and Earth gain from this climb will be 2058J.

From the information, DeAnna, with a mass of 60.0 kg, climbs 3.5 m up a gymnasium rope. The potential energy will be:

= mgh

= 60 × 9.8 × 3.5

= 2058J

When an electric motor develops 65 kW of power as it lifts a loaded elevator 17.5 m in 35s, the force that the motor exerts will be:

= Work done / Time

= 2275000/17.5

= 130000N

The shell-Earth system’s gravitational potential energy when the shell’s height is 425m will be:

= mgh

= 25 × 9.8 × 425

= 104125J

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Light rays first pass through the transparent layer called the cornea and then refracted again as they pass through the transparent lens.

How do light rays flow in the eyes?

The first factor in the journey of light via the eye is the objects being seen and how they produce, reflect, or change the light in various ways.

The visual cortex of the brain's occipital lobe serves as the destination of the light pathway, which starts with photoreceptors in the retina. Rod and cone cells are two different types of photoreceptors. When it comes to eyesight in low light and in peripheral vision, rods can be especially helpful.

The cornea is where most of the refraction occurs as light enters the eye's curved, transparent front surface. The natural or crystalline lens of the eye also distorts light rays. When an item passes in front of the eye, its rays pass through the transparent cornea and enter the eye.

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The frequency at which light is emitted;  v=hΔE=6. 6×1010, when a hydrogen atom possesses an electron.

The number of per second that a high noise wave repeats itself is known as frequency, often known as pitch. A bullfrog cry is significantly lower in frequency than a whistles, while a cricket is much lower in frequency than a drumbeat. The oscillations are reduced with decreasing frequency.

Frequency. Frequency is a unit of measurement for how frequently a recurrent event, like a wave, takes place over a specified period of time. A cycle is a single instance of the pattern's repetition. Only moving waves that relocate over time can exhibit frequency. The frequency of a wave can be used to estimate its speed. to describe the speed at which a wave is moving.

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Answer:

In 1945, the United Nations created the Universal Declaration of Human Rights (UDHR), which is a milestone document that outlines the fundamental human rights to be universally protected. The UDHR includes 30 articles that cover a wide range of rights, such as the right to life, liberty and security, freedom of speech and religion, and the right to education and work. The UDHR has been translated into over 500 languages and has served as the basis for the development of many national and international human rights laws and conventions.

The flywheel of a steam engine starts revolving at rest with a constant angular acceleration of 1.47 rad/s2, therefore the wheel has rotated across a total angle of 1709.67 rad after 59.5 seconds.

To answer the question, we write down the flywheel's motion equation as 2 = 1 + t.

Where:

Initial angular velocity for the body is 0 rad/s in equation (1) Initial and final angular velocities

Time is equal to 24.7 seconds and angle acceleration is 1.47 rad/s2.

After entering the values, we discover that 2 2 = 0 + 1.35 rad/s2* 24.7 s = 38.205 rad/s.

Thus, 540.60075 rad + 1169.073 rad = 1709.67375 rad 1709.67 rad is the equation for the total angle the flywheel covered in 59.5 seconds.

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Answer:

they are all made of cells

Tectonic plates, which are huge chunks of the lithosphere of the Earth, split farther apart during the volcanic process known as seafloor spreading. Rock is made once this bubbled-up lava is frozen in frigid seawater.

A lack of sexual pleasure, sometimes even to the point of an orgasm, is referred to as frigidity. It might be brought on by fear, an unresolved oedipal complex, rage, or sadness. When necessary, antidepressants taken in conjunction with psychotherapy are beneficial.

Your genital tissues & sexual receptivity may change as a result of lower oestrogen after menopause. A reduction in estrogen causes the blood flow to a pelvic area to diminish, which can reduce genital feeling and make it take longer to reach orgasm.

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The following equation may be used to determine heat loss via a glass window: Q = k * A / (T1 - T2) where Q denotes heat loss The thermal conductivity of glass.

(in W/m.K) is given by k. A denotes the window's surface area (in m2). T1 is the temperature of the inner surface (in degrees Celsius). T2 is the temperature of the outer surface (in degrees Celsius).The following equation may be used to determine heat loss via a glass window: Q = k * A / (T1 - T2) where Q denotes heat loss The thermal conductivity of glass.  The thickness of the glass is denoted by d. When we plug in the values, we get: Q = 1.4 * (1 * 3) * (15 - 5) / 0.005 Q = 1.4 * 3 * 10 / 0.005 Q = 1.4 * 600 / 0.005 Q = 840 / 0.005 Q = 168000 W As a result, the heat loss through a 1 m 3 m glass window with a 5 mm thickness and a temperature differential is 10 °C is equal to 168000 W.

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Answer:

static discharge

Explanation:

I hope this helps

Lightning is an example of static discharge. Thus, the correct option is A.

Lightning is the naturally occurring electrostatic discharge during which the two electrically charged regions in the atmosphere, both in the atmosphere or with one on the ground and other in cloud, temporarily neutralize themselves, causing the instantaneous release of an average of one gigajoule of energy of the charges.

Electrostatic discharge happens when the flow of electricity occurs between two objects which are electrically charged and it is suddenly shorted by the contact between those two objects. This happens because there has been a buildup of the static electricity between two objects.

Therefore, the correct option is A.

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If the distance between the two charges is doubled, the attraction or repulsion becomes weaker, decreasing it to to one-fourth of the original value.

The size of the force is inversely proportional to the square of the distance between the two charges. Therefore, If the distance between the two charges is doubled then the attraction/repulsion becomes weaker, decreasing it to to one-fourth of the original value.

The repulsive or attractive interaction between any two charged particles is defines as electric force. It's impact and effects on any body is described by Newton's laws of motion. Electric force is one of the many different kinds of forces that act on objects.

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Respuesta: T2 = 131.04K

Explicación: Dado lo siguiente:

Presión, P1 = 1.5 atm = 1.5 × 760 = 1140 mmHg

Presión, P2 = 1.2 atm = 1.2 × 760 = 912 mmHg

Volumen, V1 = 500cm3 Volumen, V2 = 300cm3

Temperatura, T1 = 273K Temperatura, T2 =?

Usando la fórmula de gas combinada:

P1V1 / T1 = P2V2 / T2

Ingresando nuestros valores:

(1140 × 500) / 273 = (912 × 300) / T2

T2 × (1140 × 500) = 912 × 300 × 273

T2 = 74692800/570000 T2 = 131.04K

Answer:25

Explanation:

Formula(77°F − 32) × 5/9 = 25°C

Answer: The answer is C. 298 K

Explanation:

According to the Skygazer's Almanac for 2022 at 40 degrees, Venus and Saturn will be in opposite parts of the sky on December 17, 2022.

The Skygazer's Almanac provides astronomical information for a specific location and year. In this case, at a latitude of 40 degrees, the almanac indicates that Venus and Saturn will be in opposite parts of the sky on December 17, 2022. This means that Venus and Saturn will appear at opposite sides of the celestial sphere as observed from Earth. However, it's important to note that the almanac's predictions are approximate and can be influenced by various factors, including atmospheric conditions and the observer's specific location. To obtain the most accurate and up-to-date information, it is recommended to consult more recent astronomical sources or use specialized software that can provide precise positions and dates for celestial events.

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Answer:

6

Explanation:

Half the wave = 3

Wavelength = 3 x 2 = 6

Answer:

Convergent boundaries. When two plates collide and one is pushed over the other, forming a mountain.