If there are waves traveling in a string at 68.5 m/s, and the
strings length is 96.8 cm and weight 8.85 g. What is the tension of
this string, given in Newtons?

Answer:

The North Pole.

Explanation:

According to the Lenz's law of electromagnetic induction, an induced elemagnetic force tends to give rise to the current. In reaction, this current's magnetic field try to oppose any replacement in the magnetic flux.

So,  as per the law of Lenz's electromagnetic induction, when the current passes in a coil in anti-clockwise direction, this will produce the opposite end of the coil in the north pole.

So, the correct answer is north pole.

The molarity of solution of NaCl is 2.28 M

The molarity of a solution is the amount in moles of a solute dissolved in a given volume of solvent in liters.

The moles of a substance = mass/ molar mass

Molar mass of NaCl = 58.5 g/mol

Moles of NaCl = 200/58.5

Moles of NaCl = 3.42 moles

Molarity of solution = 3.42/1.5

molarity of solution = 2.28 M

Therefore, the molarity of the solution of NaCl is 2.28 M.

In conclusion, molarity is the ratio of moles of solute and volume of solvent.

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The work done by the driver pushing a stationary truck is zero, but the driver still expends energy to overcome the static friction between the truck and the ground.

The work done by the driver pushing a stationary truck with a constant force is zero. This is because work is defined as the product of force and displacement in the direction of force. In this case, the force applied by the driver is in the direction of motion, but since the truck doesn't move, the displacement is zero. Therefore, the work done by the driver is also zero.

However, it's worth noting that even though no work is done on the truck, the driver still expends energy. The energy expended by the driver goes into overcoming the static friction between the truck's wheels and the ground.

Static friction is the force that prevents the truck from moving, and it requires a certain amount of energy to overcome it. This energy is dissipated as heat and sound as the driver pushes against the truck.

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When a uranium nucleus undergoes fission in a nuclear reactor, the resulting fragments have a total kinetic energy of about 200 MeV. This energy can be harnessed for various purposes, such as generating electricity.

When a uranium nucleus breaks apart in a process called fission, the resulting fragments have a total kinetic energy of about 200 MeV (mega-electron volts). This means that the two fragments are moving with a significant amount of energy.

To put this into perspective, 200 MeV is equivalent to about 3.2 x 10^-11 joules of energy.

To understand how much energy this is, imagine a bowling ball rolling at a very high speed. The fragments from the uranium nucleus would have a similar amount of kinetic energy.

This high kinetic energy is due to the repulsion between the two fragments. As the uranium nucleus breaks apart, it releases energy in the form of kinetic energy. This energy can be harnessed and used in nuclear reactors to generate electricity.

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Answer:

20Amp

Explanation:

Using the transformer formula

Vs/Vp = Ns/Np = Ip/Is

Vs/Vp = Ip/Is

Vp is the primary voltage = input voltage

Vs is the secondary voltage = output voltage

Ip is the current in the primary coil

Is is the amount of current in the secondary coil.

If the transformer doubles its input voltage Vp, its output voltage Vs will be

decreased by 2 but the output current will be doubled

Given the input current Ip = 10A, the current in the secondary coil (output current) will be doubled i.e Is = 2(10) = 20A

The current in the secondary coil be "50 A". To understand the calculation, check below.

According to the question,

Current in primary coil, \(I_{in}\) = 10 A

We know the relation,

Power = \(V_{in} I_{in}\) = \(V_{out} I_{out}\)

then,

→ \(V_{in} I_{in}\) = \(V_{out} I_{out}\)

By substituting the values,

   \(V_{in}\) × 10 = 2 \(V_{in} I_{out}\)

By applying cross-multiplication,

           10 = 2 \(I_{out}\)

         \(I_{out}\) = \(\frac{10}{2}\)

                = 5 A

Thus the response above is correct.

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The  time to drop from 1.3m and velocity after height at 0.7 mis mathematically given as

t1 = 0.515 sec  

v0 = 3.7m/s

Question Parameters:

A 0.045-kg golf ball is dropped from rest.

Is dropped from a height of 1.3m and comes back up at a height of .7m

Generally, the equation for the time to drop from 1.3m   is mathematically given as

yf - yi = vi t + a t^2/ 2

Therefore

0 - 1.3 = 0 - 9.8 t^2 /2

t1 = 0.515 sec  

Hence, after its max height is 0.7 m,

vf^2 - vi^2 = 2 a (yf - yi)

0^2 - (v0)^2 = 2(-9.8)(0.7 - 0)

v0 = 3.7m/s

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Answer:

B

Explanation:

Because the main focus of cognitive psychology is on the metal processes that affect behavior

If the members of a team are respectful and are able to get along with each other while supporting the ideas of each other, this is known as cohesion.

A team is composed of people that are working together to achieve a common goal. Thus the members of a team have one focus even though the methods that they apply at achieving the ends may differ tremendously.

Thus, if the members of a team are respectful and are able to get along with each other while supporting the ideas of each other, this is known as cohesion.

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The angular momentum of a 2.9-kg uniform cylindrical grinding wheel of radius 28 cm when rotating at 1500 rpm is 1.18 kg m²/s. the angular momentum of the grinding wheel is 14.5 kg m²/s.

The formula for angular momentum is:

L = Iω

Where, L = angular momentum

I = moment of inertia

ω = angular velocity

First, we need to find the moment of inertia of the grinding wheel.

The moment of inertia of a uniform cylinder is given by:

I = (1/2)mr²

Where,m = mass of the cylinder (2.9 kg)

r = radius of the cylinder (28 cm = 0.28 m)

So, I = (1/2)(2.9 kg)(0.28 m)²

     I = 0.092 kg m²

Now, we can find the angular momentum:

L = Iω

ω = angular velocity = 1500 , rpm = 157.08 rad/s (1 revolution = 2π radians, so 1500 rpm = 1500/60 = 25

revolutions per second = 25 × 2π = 157.08 radians per second)

L = (0.092 kg m²)(157.08 rad/s)L

  = 14.5 kg m²/s.

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Answer:

velocity

Explanation:

Explanation:

Divergent is your answer.

have a good day.

Power = work / time

Power = 200J / 10 seconds

Power = 20 watts

a. The current is in phase with the voltage is true for a series RCL circuit at resonance. When a series RCL circuit is operated at its resonance frequency, the circuit impedance becomes purely resistive, and the total current and voltage across the circuit become maximum.

At resonance, the reactance of the inductor and the capacitor cancel each other, and the impedance is dominated by the resistance of the circuit.
In a series RCL circuit, the voltage across each component is proportional to the impedance of that component. At resonance, the impedance of the inductor and capacitor becomes equal, and their voltage drops become equal too. Therefore, the total voltage across the circuit is divided equally across the inductor, capacitor, and resistor.
Regarding the phase relationship between current and voltage in a series RCL circuit, we can say that the current leads the voltage across the capacitor and lags behind the voltage across the inductor. At resonance, the inductive reactance is equal to the capacitive reactance, which results in a minimum phase shift between the voltage and current.
So, the correct answer to the question is (a) The current is in phase with the voltage at resonance in a series RCL circuit. This phase relationship is important in many practical applications, such as radio communication, where resonant circuits are used to filter specific frequencies and amplify signals.

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Answer:The disturbance created by a source of sound in the medium travels through the medium and not the particles of the medium

Explanation:i hope this is right

Answer:a repulsive electrical force. ... postulates that an electric field surrounds each charged object. If the distance between two spherical charged objects increases by a factor of two, then the electrical force between the objects. decreases by a factor of four.

Explanation: does this help

Time spent in the first interval (driving at 50 mph): 1 hour

Time spent in the second interval (driving at 60 mph): 2 hours

Let's break down the problem into two intervals and solve it step by step:

Interval 1:

Speed: 50 mph

Time: Let's denote the time spent in this interval as 't' (in hours)

In this interval, the distance covered can be calculated using the formula: Distance = Speed × Time

Therefore, the distance covered in interval 1 is: Distance_1 = 50 mph × t

Interval 2:

Speed: 60 mph

Time: This interval is twice as long as the time spent in the first interval, so the time spent in this interval is 2t (in hours).

The distance covered in interval 2 can be calculated as: Distance_2 = 60 mph × (2t)

The total distance covered is given as 170 miles. So, we can write the equation: Distance_1 + Distance_2 = 170 miles

Substituting the values we have:

50 mph × t + 60 mph × (2t) = 170 miles

Simplifying the equation:

50t + 120t = 170

170t = 170

t = 1

Now that we have found the value of 't', we can calculate the time spent in each interval:

Interval 1: t = 1 hour

Interval 2: 2t = 2 hours

Therefore, the time spent in the first interval is 1 hour, and the time spent in the second interval is 2 hours.

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The change in entropy during isothermal expansion can be determined by dividing the heat input (400 kJ) by the common temperature.

The change in entropy of the gas during isothermal expansion in a Carnot cycle can be calculated using the equation ΔS = Q / T, where ΔS is the change in entropy, Q is the heat transferred to the gas, and T is the temperature at which the expansion occurs.

In this case, the gas undergoes isothermal expansion at a temperature that is 100 °C higher than the temperature at which it is isothermally compressed. Since the Carnot cycle is reversible, the temperatures of the isothermal processes are the same.

Given that the gas takes in 400 kJ of heat during the isothermal expansion, we can calculate the change in entropy using the formula ΔS = Q / T. The temperature at which the expansion occurs is the same as the temperature at which the compression occurs. Thus, the change in entropy during isothermal expansion can be determined by dividing the heat input (400 kJ) by the common temperature.

Therefore, by applying the formula ΔS = Q / T, where ΔS represents the change in entropy, Q is the heat input, and T is the temperature, we can find the value of the change in entropy during isothermal expansion.

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The two basic premises for the special theory of relativity are: The laws of nature are the same for everyone and The speed of light is the same for everyone.

The special theory of relativity, or special relativity is a scientific theory of the relationship which is present between the space and time. In Albert Einstein's original treatment, this theory is based on two postulates including the laws of physics are invariant in all inertial frames of reference and the speed of light in vacuum is the same for all the observers, regardless of the motion of light source or the observer.

This theory applies the principle of relativity only to the inertial frames. Albert Einstein developed general relativity to apply the principle generally, which is, to any frame, and that the theory includes the effects of gravity.

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The transition that produced red light was caused by an electron jumping the shortest distance.

Visible light is made up of seven wavelengths the magnitude of the wavelength of a transition reflects the energy associated with such transition. The longer the wavelength shorter the transition that produced it.

Given that three lines in the visible spectrum produced three lines as follows;

Red - 625 - 740 nm

Yellow - 565 - 590 nm

Blue - 445 - 520 nm

We can see that the longest wavelength corresponds to red light hence it was caused by an electron jumping the shortest distance.

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Answer:

35 degrees

Explanation:

The incident angle, an 80-degree angle, and as the angle of incidence increases, the amount of refraction also increases. So, we can expect a significant change in the angle of refraction from blue to red light at an 80-degree angle of incidence.

Refraction refers to the bending of light when it passes from different mediums.The amount of refraction that occurs at an interface between two materials depends on the wavelength of light, the angle of incidence, and the properties of the materials. The relationship between these factors is described by Snell's law:

n1 sinθ1 = n2 sinθ2

where n1 and n2 are the refractive indices of the two materials, θ1 is the angle of incidence, and θ2 is the angle of refraction.

For a given angle of incidence, the amount of refraction that occurs is greater for shorter wavelengths (i.e., blue light) than for longer wavelengths (i.e., red light). This effect is known as dispersion, and it is why we see rainbows when sunlight is refracted through water droplets.

In the absence of any information about the properties of the materials involved, we can assume that the amount of refraction will increase as the wavelength decreases.

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The following that makes no distinction between an explanatory variable x and a response variable y is both correlation and regression make no distinction between x and y (Option A).

Correlation can interchange the roles of the explanatory variable (x) and the response variable (y) in both correlation and regression analysis and get the same result, as it measures the strength and direction of a relationship between two variables without considering them as dependent or independent. The value -0.8219 that you provided does not relate to the question, as it appears to be a correlation coefficient without context.

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Given,

The image distance, v=17.22 cm

The focal length of the lens, f=3.05 cm

From the thin lens formula,

Where u is the object distance.

On rearranging the above equation,

On substituting the known values,

Thus the object distance should be 3.71 cm

A ball is thrown vertically upward with a velocity of 20m/s from the top of a multistory building. The height of the point where the ball is thrown is 25 m from the ground. The height will the ball rise is 20m. 5s long will it be before the ball hip the ground.

The direction of a body or object's movement is defined by its velocity. In its basic form, speed is a scalar quantity. In essence, velocity is a vector quantity. It is the speed at which distance changes. It is the displacement change rate.

A. for solving how high will ball go , velocity at the top point will be 0 this gives ,

s = v² - u² / 2a

= 0 - 20² / -2 × 10

= 20m

B. Time to reach maximum height can be obtained from v = u + at

0 = 20 + ( − 10 ) t

t = 2s

s = ut + 0.5at²

= 20 ( 2 ) + 0.5 ( −10 ) ( 2 )²

= 20m

Therefore, the total distance for maximum height is 45 m

s = ut + 0.5at²

45 = 0 + 0.5 ( 10 ) ( t )²

t = 3s

Then,

Total time = 3+2

= 5s

Thus, A ball is thrown vertically upward with a velocity of 20m/s from the top of a multistory building.The height will the ball rise is 20m. 5s long will it be before the ball hip the ground.

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The amplitude of an oscillating electric field refers to the maximum magnitude or strength of the electric field during its oscillation.

In the context of electromagnetic waves, such as light, the amplitude represents the maximum displacement of the electric field from its equilibrium position. It is denoted by the symbol \("E_0"\) and is typically measured in units of volts per meter (V/m).

The amplitude of an oscillating electric field determines the intensity or brightness of the electromagnetic wave. It affects various properties of the wave, including the energy carried by the wave and the maximum electric potential difference experienced by charged particles in its presence. The larger the amplitude, the more energy the wave carries and the stronger its influence on charged particles.

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Answer:

Explanation:

As an example, ice on steel has a low coefficient of friction – the two materials slide past each other easily – while rubber on pavement has a high coefficient of friction – the materials do not slide past each other easily. The coefficients of friction ranges from near 0 to greater than 1.

A state machine whose output is determined by both the sequential logic and the combinational logic of the machine is a Mealy state machine.

In a Mealy state machine, the output of the machine depends not only on the current state but also on the inputs present at that particular moment. The combinational logic takes into account both the current state and the inputs to produce the output. Therefore, the output of a Mealy state machine can change in response to a transition in the state and the input combination. In contrast, a "Moore state machine" is another type of state machine where the output is solely determined by the current state and not directly influenced by the inputs. The output in a Moore state machine remains constant throughout a state until a state transition occurs.

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The required volume of the gas is 0.52 L.

Diminishing the volume of a contained gas will expand its tension, and expanding its volume will diminish its strain. As a matter of fact, on the off chance that the volume increments by a specific variable, the tension declines by a similar element, as well as the other way around.

V1 = 1.56 L, P1 = 1 atm, P2 = 3 atm,

To find: V2 of gas

So, P1V1 = P2V2

V2 = P1V1/P2

V2 = 1.56(1)/3 = 0.52 L

Thus, required volume of gas is 0.52L

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Correct question:

A gas occupies 1.56 l at 1.00 ATM what will be the volume of this gas if the pressure becomes 3.00 ATM