in the figure below, wire AX is folded at back at P such that /AP/ is 40cm and is in parallel with PX which is 60cm long to form a parallel combination. Calculate effective resistance of the parallel combination, if the resistance per unit length of the material if the wire is 2ohms per metre.​

We are given:

Frequency of the wave = 10 Hz

Speed of the wave = 25 m/s

We can use the formula:

speed = frequency x wavelength

Rearranging the formula, we get:

wavelength = speed / frequency

Substituting the given values, we get:

wavelength = 25 m/s / 10 Hz

wavelength = 2.5 m

Therefore, the wavelength of the wave is 2.5 m.

Answer:

false because this is not possible that children behaviour is marked over by egocentrism children are also the tender creation of God

A sound wave will suffer reflection, absorption, and transmission when it comes into contact with a concrete wall. The characteristics of the wave and the substance determine how much of each of these interactions occur.

When a mechanical wave encounters a particular material, its behavior depends on the properties of both the wave and the material. Let's take an example of a sound wave interacting with a wall made of concrete.

Reflection: When the sound wave meets the concrete wall, some of the wave energy gets reflected back toward the source. The amount of reflection depends on the angle of incidence and the acoustic impedance of the materials. In this case, a significant amount of sound will be reflected since the acoustic impedance of air and concrete is very different.

Absorption: Some of the sound energy may be absorbed by the concrete wall as it passes through it. The amount of absorption depends on the thickness of the wall, its density, and its acoustic absorption coefficient. Concrete walls are known to have low absorption coefficients, which means that they are not very effective at absorbing sound.

Transmission: The sound wave can also transmit through the concrete wall, and the amount of transmission depends on the wall's thickness and the frequency of the sound. Lower-frequency sounds tend to transmit better through concrete walls than higher-frequency sounds.

Therefore, when a sound wave encounters a concrete wall, it will experience reflection, absorption, and transmission. The amount of each of these interactions depends on the properties of the wave and the material.

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Answer:

The magnitude of the electric field at the location can be calculated using the formula for electric force:

Electric force (F) = electric field (E) * charge (q)

Rearranging the formula to solve for electric field (E):

Electric field (E) = Electric force (F) / Charge (q)

Given:

Charge (q) = +2.15 E-19 C (magnitude of the charge of the lint)

Electric force (F) = 4.0 E-9 N (force of attraction between the lint and the clothing)

Plugging in the values into the formula:

Electric field (E) = 4.0 E-9 N / +2.15 E-19 C

Calculating the electric field:

Electric field (E) = 1.8604651162790697 E10 N/C

Rounding to appropriate significant figures, the magnitude of the electric field at the location is approximately 1.9 E10 N/C.

So, the correct option is A. 1.9 E10 N/C.

Explanation:

Answer:

The potential effects of mobile phone radiation on the biosystem, including the human body, have been a topic of research and debate for many years. Mobile phones emit non-ionizing radiation, which is different from ionizing radiation (such as X-rays) that is known to cause cellular damage and increase the risk of cancer. However, there is still concern about the effects of prolonged exposure to mobile phone radiation, especially on the brain and other sensitive organs.

Studies have shown that the radiation emitted by mobile phones can cause a slight increase in temperature in the brain and other tissues near the ear. This increase in temperature can potentially cause damage to cells and tissues, although the amount of radiation emitted by mobile phones is generally considered to be too low to cause significant harm.

There is also some evidence to suggest that mobile phone radiation can affect sleep patterns, as the radiation emitted by mobile phones can interfere with the body's natural circadian rhythm. This can potentially lead to sleep disturbances and other health problems.

Other potential effects of mobile phone radiation on the biosystem include changes in blood pressure, heart rate, and brain activity. Some studies have also suggested that mobile phone radiation may affect fertility in men by reducing sperm motility and increasing DNA damage.

While there is still much debate about the potential effects of mobile phone radiation on the biosystem, most experts agree that the risk of harm is generally low. However, it is still recommended that people take precautions to limit their exposure to mobile phone radiation, such as using hands-free devices or texting instead of making phone calls.

Explanation:

Answer:

As stated by the National Cancer Institute, "there is currently no consistent evidence that non-ionizing radiation increases cancer risk in humans. The only consistently recognized biological effect of radiofrequency radiation in humans is heating."

Explanation:

good afternoon

The projectile sticks to the pendulum upon impact, which then swings up to some maximum angle from vertical is 13.61°.

Given, mass of cylindrical blade M = 7kg, radius R = 0.45 m and Length L = 4 m

mass of projectile m = 1.3 kg and its velocity v = 3.75 m/s

distance d = 3 m.

The projectile sticks to the pendulum upon impact, which then swings up to some maximum angle from vertical:

9.14J = (m + M) × gh

1 - cosx = 0.028

x = 13.61°

Thw moment of inertia of the pendulum, with the projectile stuck to it is 33.21 Kgm².

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After the cans P and Q are separated, The balloon will be repelled by the soda can labeled Q after they are separated because the can labeled Q will be positively charged.

Lets assume that the soda cans (P and Q) are initially neutral and in contact.

When the +ve is brough close to there would be the distribution of charge. The -ve charges that are in P would then be attracted to the area that is closer to ballon. The positives would be repeled. They would be farther

P will then have the net negative on area that faces balloon and Q with the net positive on area facing P

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The voltage across the resistor R2 in the circuit is 2.5 V.

The voltage across the circuit, V = 5 V

The value of resistance in the resistors = 1 Ω

The resistors R₂ and R₃ are connected in series. So, their effective resistance,

R = R₂ + R₃

R = 1 + 1

R = 2 Ω

The effective resistance of R₂ and R₃ and the resistor R₁ are connected in series. So. their effective resistance,

R' = RR₁/(R + R₁)

R' = 1 x 1/(1 + 1)

R' = 0.5 Ω

The current flowing through the circuit,

I = V/R'

I = 5/0.5

I = 2.5 A

The voltage across the resistor R₂,

V₂ = I/R₂

V₂ = 2.5/1

V₂ = 2.5 V

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Answer:

ncident   -   a ray of light striking surface

focal point - location where parallel rays meet

principal axis  -  a line passing thru center of surface  

focal length   -  distance between center of convex lens or mirror

normal     -      line perpendicular to surface

convex    -     lens or mirror curving outward

refracted   -     changed direction after passing from one medium

concave    -    lens or mirror curving inward

reflected   -    bounced off of a surface

The  example that represents a class 2 lever is: D. a screwdriver opening a paint can.

The load is situated in a class 2 lever halfway between the fulcrum and the effort. The screwdriver's resting place against the paint can's rim serves as the fulcrum in this scenario.

The paint can's lid serves as the load, and the force exerted by the hand on the screwdriver's handle serves as the effort. A class 2 lever can be identified by the load being situated between the fulcrum and the effort.

Tweezers, salad tongs, and opening and closing a car door are not examples of class 2 levers. Class 1 levers include things like tweezers and salad tongs, whereas class 3 levers include things like car doors that open and close.

Therefore the correct option is D.

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The missing square in the given sequence is a large dot without circle.

option C.

A sequence refers to an ordered collection of objects, typically numbers or other mathematical entities, arranged in a specific order according to a well-defined rule. Each object in the sequence is called a term or an element of the sequence.

In the given sequence, we can notice that it alternates between two circles and a circle.

From the first sequence, it has 2 circles and large dot, the second has one circle and a dot.

The third sequence has a small circle and a larger dot, so the next sequence will have no circle and a large dot.

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All of the statements describe ways that simple machines make work easier, but the statement that best describes a way that simple machines make work easier is: "reduce the size of the input force needed to perform a task."

Simple machines such as levers, pulleys, and inclined planes, allow us to apply a smaller input force over a greater distance to produce a larger output force over a shorter distance. This allows us to move heavy objects with less force or effort.

Changing the direction of the input force, as with a pulley, does not reduce the amount of force needed to perform a task but can help to change the direction of the force to a more convenient or useful direction. Similarly, simple machines do not reduce the amount of energy needed to perform a task, but they can make it easier for us to apply that energy or force.

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Answer:

75 seconds

Explanation:

distance = speed x time

Rearranging the formula to solve for time:

time = distance / speed

time = 240 m / 3.2 m/s

time = 75 s

The stress component if the give elemen is rotated counter clockwise 10⁰ is σx' = -35.82 MPa, σy' = 41.18 MPa, and τx'y' =

-21.53 MPa.

Applying equations for the stress invariants:

σ1 + σ2 + σ3 = y + t + x = 60 MPa + 20 MPa - 40 MPa = 40 MPa

σ1σ2 + σ1σ3 + σ2σ3 = ytx = 60 MPa × 20 MPa × (-40 MPa) = -48,000 MPa²

λ³ - (σ1 + σ2 + σ3)λ² + (σ1σ2 + σ1σ3 + σ2σ3)λ - σ1σ2σ3 = 0

λ³ - 40λ² - 48,000λ + 480,000

= 0

Solving for the roots using a numerical method, we get:

λ1 = 75.5 MPa

λ2 = -12.5 MPa

λ3 = -23 MPa

To find the maximum shearing stress, we can use the equation:

τmax = (λ1 - λ3) / 2

Substituting the values we obtained, we get:

τmax = (75.5 MPa - (-23 MPa)) / 2

= 49.25 MPa

The corresponding normal stress for the maximum shearing stress is:

σn = (λ1 + λ3) / 2

= (75.5 MPa + (-23 MPa)) / 2

= 26.25 M

applying the transformation equations:

σx' = σx cos²θ + σy sin²θ + 2τxy cosθ sinθ

τx'y'

= (σy - σx) / 2 sin2θ + τxy cos2θ

Substituting the given values and θ = 10⁰, we get:

σx' = -35.82 MPa

σy' = 41.18 MPa

τx'y' = -21.53 MPa

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Given that two large parallel plates are separated by 0.20 m and that the potential difference is 12V.

(a) Describe the motion of an electron released from rest at a distance "d" from the negative plate.

(b) What distance from the positive plate will the electron have a speed of 1 x 10^6 m/s?

For part (a):

The magnitude of an electric field can be given as  [tex]||\vec E||=\frac{\Delta V}{d}[/tex], where "ΔV" is the potential difference and "d" is the distance between the plates.

So, [tex]||\vec E||=\frac{12 \ V}{0.20 \ m} \Longrightarrow \boxed{||\vec E||=60 \ \frac{N}{C} }[/tex]

An electric field is created between the plates pointing from positive towards negative. We know that negative charges accelerate opposite the direction of electrical fields. So the electron placed "d" meters away from the negative plate will accelerate towards the positive plate at a constant rate.

For part (b):

We know that...

- the charge of an electron is [tex]\bold{-1.602 \times10^{-19} \ C}[/tex].

- the mass of an electron is [tex]\bold{9.11 \times10^{-31} \ kg}[/tex].

- [tex]\vec F_e=q\vec E[/tex]

- [tex]\vec F =m\vec a[/tex]

[tex]\Longrightarrow \vec F_e=(-1.602 \times10^{-19} \ C)(60 \ \frac{N}{C} }) \Longrightarrow \boxed{\vec F_e= -9.612 \times10^{-18} \ N}[/tex]

[tex]\Longrightarrow \vec F =m\vec a \Longrightarrow \vec a=\frac{\vec F}{m} \Longrightarrow \vec a=\frac{-9.612 \times10^{-18}}{9.11 \times10^{-31} \ kg} \Longrightarrow \boxed{\vec a=-1.06 \times10^{13} \ m/s^2}[/tex]

Kinematic Equation: [tex]\vec v_f^2=\vec v_0^2+2\vec a \Delta \vec x[/tex]

[tex]\Longrightarrow 1 \times10^{12} \ m^2/s^2=-2.11 \times10^{13} \ m/s^2 \Delta \vec x \Longrightarrow \Delta \vec x= \frac{1 \times10^{12} \ m^2/s^2}{-2.12 1\times10^{13} \ m/s^2}[/tex]

[tex]\Longrightarrow \boxed{\Delta \vec x= -0.047 \ m}[/tex]

The distance from the positive plate we'll call, "D."

[tex]D=0.20+\Delta \vec x[/tex]

[tex]\Longrightarrow D=0.20+\Delta \vec x \Longrightarrow D=0.20 \ m+(-0.047 \ m) \Longrightarrow \boxed{D=0.153 \ m} \therefore Sol.[/tex]

According to the question by Coulomb's Law the final value of the equation is 0.00 N .

Coulomb's Law is a fundamental law of physics that states the magnitude of the electrostatic force between two point charges is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them. In equation form, the law states F = k * (q1 * q2)/r², where F is the magnitude of the force, k is a constant, q1 and q2 are the magnitudes of the two charges, and r is the distance between the two charges.

Note that by Coulomb's Law,
F = kq1q2/r²
where
k = 8.99E9 Nm²/kg²
q1, q2 = the two interacting charges
r = the distance of separation of the two charges
Thus, for force of B on A points to the right, as opposite charges attract.
qA = 1.0E-9 C
qB = -1.0E-9 C
r = 0.01 m
Thus,
F(B on A) = 8.99E-5 N
Now, for force of C on A points to the left, as like charges repel.
Thus, as
qA = 1.0E-9 C
qC = 4.0E-9 C
r = 0.02 m
F(C on A) = -8.99E-5 N    [the negative sign because it is to the left]
Thus,
Fnet (A) = F(B on A) + F(C on A)
Fnet (A) = 0.00 N

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The volume increases or decreases by a factor of 1.52x.

According to Charles's Law, for an ideal gas held at constant pressure, the volume is directly proportional to the absolute temperature. Therefore, if the temperature of the gas is changed by a factor of 1.52x, the volume will also change by the same factor.

So, the factor by which the volume increases or decreases is 1.52x. If the temperature increases, the volume will increase, and if the temperature decreases, the volume will decrease.

This relationship is expressed mathematically as:

V1/T1 = V2/T2

where V1 and T1 are the initial volume and temperature, and V2 and T2 are the final volume and temperature, respectively.

Since the pressure is constant, we can rearrange the equation to solve for the final volume:

V2 = (T2/T1) * V1

Given that the temperature changes by a factor of 1.52x, we can substitute T2 = 1.52xT1 into the above equation to get:

V2 = (1.52xT1/T1) * V1

V2 = 1.52x * V1

As a result, the volume rises or falls by 1.52x.

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Answer:

2450J

Explanation:

Acc to eq

K.E= 1/2mv^2

By putting values we get

K.E = 1/2(0.01kg)(700)^2

we get the answer:

2450J (joules?)

Answer:

Transcendentalism was greatly influenced by various philosophical and religious ideas, including:

German Idealism: Transcendentalism was heavily influenced by the works of German philosophers such as Immanuel Kant and Friedrich Schelling, who stressed the importance of the individual and the power of the human mind to comprehend the world.

Romanticism: Transcendentalists also drew on the ideas of the Romantic movement, which emphasized the importance of emotion, intuition, and imagination in the human experience.

American Romanticism: Transcendentalism was a product of the American Romantic movement, which rejected the materialism and commercialism of American society in the 19th century and sought to elevate the individual, nature, and spiritual experience.

Eastern philosophy and religion: Transcendentalists were influenced by the teachings of Hinduism and Buddhism, particularly the concept of transcendence, which emphasizes the individual's ability to transcend the limitations of the material world and connect with a higher spiritual reality.

Overall, transcendentalism was shaped by a diverse range of ideas and thinkers, reflecting its emphasis on individualism, intuition, and spiritual experience.

A decrease in energy from 5 KJ to 3.2 KJ, or a loss of 1.8 KJ, indicates that the system has lost energy. This might happen for a number of reasons, such as energy being transferred to another system or changing forms.

"5KJ changes to 3.2 KJ" refers to. However, assuming that the question is asking about a change in energy from 5 KJ to 3.2 KJ, this would mean that there has been a decrease in energy of 1.8 KJ.

Energy is described in physics as the capacity to perform work and can take on a variety of shapes, including kinetic energy, potential energy, thermal energy, etc. After the British physicist James Prescott Joule, the unit of energy is called a joule (J). 1000 joules make up one kilojoule (KJ).

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The final velocity of the object after hitting another object is 7.5 m/s is obtained by the law of conservation of momentum.

The law of conservation of momentum states that the momentum remains constant before and after collisions. When the two bodies collide with each other, the momentum doesn't change. Thus, the momentum can neither be created nor destroyed.

From the given,

m₁(mass) = 12kg

m₂(mass) = 20 kg

The initial velocity of object-1 (u₁) = 20 m/s

The initial velocity of object-2 (u₂) = 0 m/s

The final velocity of mass 15 kg (v) = ?

Law of conservation of momentum

(m₁×u₁) + (m₂×u₂) = (m₁ + m₂) v

(12×20) + (20×0) = (12 + 20) v

240 = 32 v

v = 240 / 32

 = 7.5 m/s

The final velocity v= 7.5 m/s.

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These scientists are known  to study different aspects of science. The study they engage are;

a. Geologists - study the physical structure and composition of the Earth, including rocks, minerals, and natural resources.

b. Zoologists - study animals, their behavior, physiology, evolution, and distribution.

c. Anthropologists - study human societies, cultures, and behavior across time and space.

d. Botanists - study plants, their physiology, structure, ecology, and evolution.

e. Chemists - study the composition, properties, and behavior of matter and the chemical changes it undergoes.

f. Physicists - study the fundamental principles that govern the behavior of matter and energy in the universe, including mechanics, thermodynamics, electromagnetism, quantum mechanics, and relativity.

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Answer:

0.10 N

Explanation:

The drag force can be expressed using the following formula:

F = 1/2 * rho * A * Cd * v^2

Let's calculate the cross-sectional area of the sphere:

A1 = pi * r1^2

A1 = pi * (0.02 m)^2

A1 = 0.00126 m^2

Converting the speed to meters per second:

v1 = 0.1 m/s

Now we can use the formula to solve for the density times the drag coefficient:

rho * Cd = 2 * F / (A1 * v1^2)

rho * Cd = 2 * 8 N / (0.00126 m^2 * (0.1 m/s)^2)

rho * Cd ≈ 1.592 kg/m

For the second sphere with a radius of 4 cm and a speed of 5 cm/s, we can calculate the cross-sectional area and the speed in the same way:

A2 = pi * r2^2

A2 = pi * (0.04 m)^2

A2 = 0.00502 m^2

v2 = 0.05 m/s

Using the same value of the density times the drag coefficient:

F2 = 1/2 * rho * Cd * A2 * v2^2

F2 = 1/2 * (1.592 kg/m) * 0.00502 m^2 * (0.05 m/s)^2

F2 ≈ 0.10 N

Answer:

The ball would be traveling fastest at point (C).

Point (D) appears to be the same height as point (C) but the ball would probably have lost some speed on rebounding,

In dogs whose excessive staircase use you want to stop or slow down rather than for young, lively dogs who use stairs frequently, a ramp's single-sloped, modest incline would be more helpful.

To forward-bend the head or body: bow. : to incline, gravitate, or get pulled to an opinion or behaviour.

adj. 1 postpositive; frequently followed by: having a tendency; disposition. 2 inclining or sloping. A plane that has an inclined angle to a horizontal that is below a straight angle.

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The angle between the reflected and refracted rays is the same as the angle of incidence, which is 48.0°. This is because of the law of reflection.

Reflection is the process of actively and critically considering an experience or event in order to gain a deeper understanding of it. Reflection can be a powerful tool for personal growth and development, helping us to take control of our lives and make positive changes. Reflection involves analyzing and interpreting our thoughts and feelings about an experience, and can be done through writing, talking, or thinking. It is a way of exploring our beliefs, values, and assumptions, and is often used to explore our emotions, behaviours, and relationships.

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The speed of sound traveling in the soil depends on the type of soil.

The speed of sound traveling through soil can vary depending on the composition and density of the soil.

In general, sound travels slower through soil than through air, with typical speeds ranging from around 1000 to 4000 meters per second.

The speed of sound in the soil has been researched to have important implications for seismic surveys, which use sound waves to map underground geological structures and identify potential sources of natural resources like oil and gas.

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The weight of the meterstick (mg) and the tension forces in the strings (T_L and T_R) are the forces pulling on the meterstick. The net force acting on the meterstick is 0 since it is at rest.

[tex]T_L * 0.25 m = m * g * 0.5 m\\T_L = m * g * 0.5 m / 0.25 m = 4 * m * g = 8.88 N[/tex]

The only force operating on the meterstick once the appropriate string has been severed is its weight. The weight's torque about the pivot point is

τ = -mg * 0.25 m

where the clockwise direction of the torque is indicated by the negative sign. We may determine by using the rotational equivalent of Newton's second law, = I, where I is the meterstick's moment of inertia and is its angular acceleration.

α = -mg * 0.25 m / (1/3 * m * L^2) = -3g/L = -29.4 rad/s^2

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