Which 'advanced' material changes shape with an applied voltage?
a. piezoelectric
b. magnetostrictive
c. shape-memory alloy
d. magnetorheological

A real gas behaves as an ideal gas when the gas molecules are far apart and have negligible intermolecular interactions.

In more detail, an ideal gas is a theoretical gas that is composed of particles that have no volume and do not interact with each other except through perfectly elastic collisions. In reality, all gases have some volume and intermolecular forces that can affect their behavior. At high temperatures and low pressures, however, the effects of intermolecular forces become less significant, and gas molecules behave more like ideal gases. This is because the average distance between molecules is greater, and there are fewer collisions between them. Conversely, at low temperatures and high pressures, real gases behave less like ideal gases because the molecules are closer together and interact more strongly.

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Poor communication

This is an example of a conflict based on poor communication. Because of the reason is that in customer service a person should have skills to communicate in a good manner. It is important because if the person has this skill that he can communicate with others best.

Then he can impress the customer and realize customer about the qualities of their product. In every kind of business, communication skills play major role. Therefore, both john and Henry are confused as their priorities should be on focus to improve their communication skills.

When there is a disconnect between what is said and what is heard, poor communication frequently results. In other words, the individual to whom the communication is being directed misinterprets what you are trying to convey. There is no longer mutual understanding.

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The system described by the transfer function G(s) = -co² s² + 2a + w², with a damping ratio of 1.3 and a natural frequency of 0.5, has an overdamped unit step response. So, the correct option is (E)

The transfer function of the system is given as G(s) = -co² s² + 2a + w², where co represents the damping ratio, a represents an arbitrary constant, and w represents the natural frequency of the system. We are given that the natural frequency is 0.5 and the damping ratio is 1.3.

To determine the type of unit step response, we need to analyze the damping ratio (co) in relation to the critical damping value (co_critical).

The critical damping ratio (co_critical) is defined as the value where the system is on the threshold between being overdamped and underdamped. It is given by the formula co_critical = 2 * sqrt(a * w²).

In our case, the natural frequency (w) is 0.5, so we can calculate co_critical as follows: co_critical = 2 * sqrt(a * 0.5²).

Since the damping ratio (co) is given as 1.3, we can compare it with co_critical to determine the type of unit step response.

If co > co_critical, the system is considered overdamped (Option E).

If co = co_critical, the system is considered critically damped (Option D).

If co < co_critical, the system is considered underdamped (Option C).

Based on the given values, we can determine that the system is overdamped (Option E) because the damping ratio (1.3) is greater than the critical damping ratio.

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Answer:

Radio pulsars and Recycled pulsars

Answer:4.0s

Explanation:jus is

a) The net work done on the particle is W = Kfinal - Kinitial.

b) W = (1/2)mvfinal² - (1/2)m vinitial².

c) ∆K = -∫(L to 3L) Cx² dx.

a) The net work done on a particle is equal to the change in its kinetic energy. When considering the work done by external forces, it can be expressed as W = Kfinal - Kinitial, where Kfinal represents the final kinetic energy of the particle and Kinitial represents its initial kinetic energy.

b) To evaluate the integral ∫(vfinal to vinitial) mvdv, we integrate the expression with respect to v over the given limits. This results in the formula W = (1/2)mvfinal² - (1/2)m vinitial², where m is the mass of the particle.

c) In the case of a particle moving in the x direction and experiencing a net force F(x) = Cx², where C is a constant, the change in kinetic energy (∆K) can be determined by integrating the force over the displacement of the particle. By substituting the given limits of xinitial = L and xfinal = 3L into the integral, we have ∆K = -∫(L to 3L) Cx² dx.

It's important to note that further calculations may be required to evaluate the integral and obtain a numerical value for ∆K in terms of the constant C and the displacement L.

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Answer:

To find the volume of a rectangular object, measure the length, width and height. Multiply the length times the width and multiply the result by the height. The result is the volume. Give the result in cubic units, such as cubic centimeters.

Explanation:

Answer:

Kinetic energy is the energy possessed by an object due to its motion. If an object is moving, then it has kinetic energy. The amount of kinetic energy depends on mass and speed.

Explanation:

Answer:

Peach and Apple will take the same time as the gravitional pull acting on both of them is equal.

height of peach=initial velocity*time+1/2*gravitional pull*(time^2)

1.8=0*time+1/2*9.8*time^2

1.8=0+1/2*9.8*time^2

1.8=1/2*9.8*time^2

3.6/9.8=time^2

taaking value of gravitional pull approx to 10

3.6/10=time^2

0.36=time^2

0.6=time

therefore, the time taken is 0.6sec

Explanation:

The time it takes the peach to reach the ground is 0.61 sec

From the question,

We are to determine how long it would take the peach to reach the ground.

From one of the equations of kinematics for free falling objects,

We have that

\(H = ut + \frac{1}{2}gt^{2}\)

Where

H is the height

u is the initial velocity,

t is the time

and g is the acceleration due to gravity ( g = 9.8 m/s²)

Since the object is dropped with no velocity, then the initial velocity is 0 m/s

From the given information

H = 1.8 m

u = 0 m/s

Putting the parameters into the formula,

We get

\(1.8 = 0(t) + \frac{1}{2}(9.8)t^{2}\)

This becomes

\(1.8 = 0 + 4.9t^{2}\)

\(1.8 = 4.9t^{2}\)

Then,

\(t^{2} = \frac{1.8}{4.9}\)

\(t^{2} = 0.367347\)

∴ \(t =\sqrt{0.367347}\)

t = 0.60609 sec

t ≅ 0.61 sec

Hence, the time it takes the peach to reach the ground is 0.61 sec

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If an electron vibrates back and forth in an clean wire with a frequency of 60.0 Hz, then it will make 2.2×10⁵ cycles. in 1.0 h. Hence option D is correct.

Electric charge is the physical property of matter that experiences force when it is placed in electric field. F = qE where q is amount of charge, E = electric field and F = is force experienced by the charge. there are two types of charges, positive charge and negative charge which are generally carried by proton and electron resp. like charges repel each other and unlike charges attract each other. the flow charges is called as current. Elementary charge is amount of charge a electron is having, whose value is 1.602 x 10⁻¹⁹ C

Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.

Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform. There are two types of the wave longitudinal wave and transverse wave.

Frequency is nothing but the number of oscillation in a unit time.

Given,

frequency f = 60.0 Hz.

time t = 1.0 h = 60*60 = 3600s

F = number of cycles/time

number of cycles = F×time

The number of cycles in 1 Hr is

60*3600 = 2.2×10⁵ cycles.

Hence option D is correct.

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Answer:

C

Explanation:

plato

Answer:

c. Salt and Water

Explanation:

The combination (C-B-A) represents a stable water column.

The question asks which combination of water parcels A, B, and C creates a stable water column. Water parcel A has a temperature of 18 degrees Celsius, parcel B has a temperature of 22 degrees Celsius, and parcel C has a temperature of 23 degrees Celsius.

A stable water column occurs when the temperature decreases with depth, causing denser water to be below less dense water. This prevents vertical mixing and maintains stratification.

To determine which combination represents a stable water column, we will arrange the parcels in different orders and observe which one follows the stability criteria.

1. A-B-C: 18°C-22°C-23°C
2. A-C-B: 18°C-23°C-22°C
3. B-A-C: 22°C-18°C-23°C
4. B-C-A: 22°C-23°C-18°C
5. C-A-B: 23°C-18°C-22°C
6. C-B-A: 23°C-22°C-18°C

Out of these combinations, option 6 (C-B-A) represents a stable water column.

In this arrangement, the temperature decreases with depth, with parcel C at the top (23°C), parcel B in the middle (22°C), and parcel A at the bottom (18°C). This temperature distribution ensures that denser water is at a greater depth than less dense water, maintaining a stable stratification within the water column.

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The number of points scored during a basketball game is a discrete variable.

A discrete variable is a countable variable that can only take on certain values. In a basketball game, points are awarded in whole numbers (1, 2, or 3), so the number of points scored is a discrete variable.

In a basketball game, the number of points scored is a discrete variable. A discrete variable is a countable variable that can only take on certain values. In a basketball game, points are awarded in whole numbers (1, 2, or 3), so the number of points scored is a discrete variable. A continuous variable, on the other hand, can take on any value within a certain range. For example, the height of a person is a continuous variable because it can take on any value within a certain range. There are no specific values that a person's height can take on like there are with the number of points scored in a basketball game. The discreteness of the number of points scored in a basketball game has important implications for statistical analysis. For example, it would not make sense to calculate the mean number of points scored to two decimal places because the number of points scored can only take on whole number values. It would be more appropriate to round the mean to the nearest whole number. The discreteness of the variable also affects the types of graphs and charts that can be used to display the data.

In conclusion, the number of points scored during a basketball game is a discrete variable because it can only take on whole number values. This discreteness has important implications for statistical analysis and affects the types of graphs and charts that can be used to display the data.

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Answer:

Genotypes are determined by tests. Genotype and phenotype sound the same but mean different things. The phenotype is determined by your genotypes and by your genes or traits, like hair color or type, eye shape and color, body and height. Were all unique, even identical twins, based on the way they look or act. Your uniqueness is based on your genetic make-up, that we inherited from our parents.

Is this better?

Brainliest please!

The capacitance of the spherical capacitor is approximately 1.23 μF.

The capacitance of a spherical capacitor determines its ability to store electric charge for a given potential difference. To calculate the capacitance of the spherical capacitor in this scenario, we can use the formula C = Q/V, where C represents capacitance, Q is the charge, and V is the potential difference.

Given a charge of 3.40 nC and a potential difference of 210.0 V, we can substitute these values into the formula to obtain a capacitance of approximately 1.23 μF.

The presence of a vacuum between the plates of the capacitor suggests that the dielectric material is air. The capacitance of a spherical capacitor is influenced by factors such as the geometry of the plates, the separation between them, and the dielectric constant of the medium.

In this case, with the plates separated by vacuum and the inner radius of the outer shell given as 4.50 cm, we can focus on the charge and potential difference to determine the capacitance.

Capacitance is a fundamental property of capacitors and plays a crucial role in electrical circuits. It determines the amount of charge a capacitor can store per unit potential difference and influences the energy storage capacity of the device.

The capacitance of a spherical capacitor, like in this scenario, depends on various factors, including the geometry of the plates and the medium between them.

Understanding capacitance is essential in circuit design, power transmission, and energy storage applications, as it enables engineers and scientists to optimize system performance and ensure efficient operation.

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Answer:

The answer is B, velocity.

Explanation:

Just took the quiz. Hope this helps! Please count as braniliest.

Answer:

The answer is velocity.

Explanation:

Remember velocity is the speed of something in a given direction.

and beside i just took the quiz ♡

Explanation:

An isolated system cannot exchange any heat, work, or matter with the surroundings, while an open system can exchange energy and matter.

Answer:

If the potential energy change of each cart is the same, then the total mechanical energy change is the same for each cart

Explanation:

Hills look steeper when standing back from the edge so that gaze is nearly parallel to the surface of the hill. When optical slant (the angle between the center of gaze and the surface) is small, surface orientation is pulled toward the direction of gaze

Answer:

SI

Explanation:

Answer:

Behavior is determined by the environment. Behavior, no matter how complex, can be reduced to a simple stimulus.

Explanation:

Body waves come in two different varieties: P-waves move through objects as quickly as S-waves move through solids, liquids, & gases. The most destructive seismic waves are surface waves, despite their slowness.

Intermolecular connections are broken when surfaces are formed, and surface energy measures this disruption. Interfacial free energy or the surface free energy are other names for it. The work that is performed by the pressure that forms the new surface, expressed as a unit of area, is the simplest definition of surface energy.

Surface energy is frequently expressed in terms of mN/m and can be described as the amount of energy needed to grow a surface area per unit of area.

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Answer:

Approximately \(2.69\; {\rm A}\).

Explanation:

Ensure that all values are measured in standard units. Charge should be measured in coulombs, while time should be measured in seconds:

\(\begin{aligned}t &= 3.0\; {\rm hr} \times \frac{3600\; {\rm s}}{1\; {\rm hr}} = 10800\; {\rm s}\end{aligned}\).

Electric current \(I\) is the rate of flow of electric charge.

In order to find the electric current, divide electric charge \(q\) by the time \(t\) required to transfer these charge. If charge \(q\!\) is measured in coulombs and time \(t\!\) is measured in seconds, the unit of current \(I\)would be amperes:

\(\begin{aligned}I & = \frac{q}{t} \\ &= \frac{29000\; {\rm C}}{10800\; {\rm s}} \approx 2.69\; {\rm A}\end{aligned}\).

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

\(\huge\underline\mathtt\colorbox{cyan}{For Positively Charged:}\)

By gaining electrons from the ground, the object will have a balance of charge and therefore be neutral. Grounding is the grounding of a positively charged object and involves the transfer of electrons from the ground into the object.

\(\huge\underline\mathtt\colorbox{red}{For Negatively Charged:}\)

If it is to have its charge removed, then it will have to lose its excess electrons. Once the excess electrons are removed from the object, there will be equal numbers of protons and electrons within the object and it will have a balance of charge.

Answer:

A

Explanation:

This is true because culture in Asia focus more on energy that is why we see kung fu and taekwondo etc.

Answer:

A

Explanation:

Got it right.

The direction of the magnetic field can be determined using the right-hand rule (RHR).

According to the RHR, if you point your right thumb in the direction of the particle's velocity (in this case, to the right), and curl your fingers towards the direction of rotation of the particle (counterclockwise), then the direction in which your fingers point is the direction of the magnetic field.

So, in this case, the direction of the magnetic field will be perpendicular to both the direction of the particle's velocity and the direction of the rotation. Therefore, the magnetic field will be pointing towards the observer, or into the plane of the circular trajectory.

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A relation between the velocity of the stars and the mass inside the radius of the orbit is \(v^2 = G * M / r\). The mass enclosed by each orbit is proportional to the square of the orbit radius.The total mass of spiral galaxies is larger than what is accounted for by the visible stars alone.

In a stellar disk, the gravitational force between the stars and the mass inside their orbit determines their velocities. According to Newton's law of gravitation, the force of gravity is given by the equation

\(F = G * (M * m) / r^2\),

where G is the gravitational constant, M is the mass inside the orbit, m is the mass of a star, and r is the radius of the orbit.

As the stars move on circular orbits, the centripetal force required to keep them in orbit is provided by gravity. This centripetal force is given by

\(F = m * v^2 / r\),

where v is the velocity of the stars. Equating the two expressions for force:

\(G * (M * m) / r^2 = m * v^2 / r\).

Canceling out the mass of the star (m) from both sides and rearranging the equation,

\(v^2 = G * M / r\).

This equation reveals that the velocity of the stars is proportional to the square root of the mass inside the orbit divided by the radius of the orbit.

Since the observed velocity is constant, it implies that the square root of the mass inside the orbit divided by the radius of the orbit is constant as well. Therefore, the mass distribution in the galaxy follows a specific pattern, where the mass enclosed by each orbit is proportional to the square of the orbit radius.

This observation allows to infer that there is more mass concentrated toward the center of the galaxy, contributing to a higher mass inside smaller orbits. Additionally, this implies that the total mass of spiral galaxies is larger than what is accounted for by the visible stars alone, suggesting the presence of dark matter.

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Hence, the work required to move the point charge to the origin is 4.50 × 10⁻²¹ J and 2.81 × 10⁻³ eV.

Given data: Charge around a ring of radius, R = 10 cm = 0.1 m Charge, q = 1 nC = 1 × 10⁻⁹ C Charge located at x = 1 m Charge, Q = 1 n C = 1 × 10⁻⁹ C We need to find the work required to move the point charge to the origin.

Formula used: Potential due to ring with uniformly charged is given as V=K(λR²)/[sqrt(R²+x²)]

Charge present on the ring = Charge/unit length × Circumference of the ringλ = q/2πR

q is the charge on the ring of radius R, so the distance to be moved by the test charge is R (radius).

The total work done can be given as, W = V(q) = V(Q)

The unit of potential energy is Joules(J) and Electron Volt(eV)1 eV = 1.6 × 10⁻¹⁹ Joules

Calculation:

Here, ε₀ = 8.854 × 10⁻¹² C²/N

m² is the permittivity of free space, K = 1/4πε₀ is the Coulomb constant.

Charge per unit length = λ = q/2πR = (1 × 10⁻⁹)/(2π × 0.1) = 1.59 × 10⁻¹⁰ C/m

Potential at a distance of x from the ring is given as, V=K(λR²)/[sqrt(R²+x²)]

Putting the given values,

V=K(λR²)/[sqrt(R²+x²)]

V = 9 × 10⁹ × (1.59 × 10⁻¹⁰ × 0.1²)/[sqrt(0.1²+1²)]

V= 4.50 × 10⁻¹² J/Charge.

Thus, work done,

W = V(Q) = 4.50 × 10⁻¹² J × 1 × 10⁻⁹ C

W= 4.50 × 10⁻²¹ J.

Also, W = (4.50 × 10⁻²¹ J) / (1.6 × 10⁻¹⁹ J/eV) = 2.81 × 10⁻³ eV.

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Answer:

The answer is c

Explanation:

i had the same question and you have to believe me and if you don't that will be on you

Starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², the car will travel a distance of approximately 0.2119 meters or 21.19 centimeters in 0.75 seconds.

To determine the distance traveled and the time elapsed by the car starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², we can use the equations of circular motion.

The tangential acceleration is the rate of change of tangential velocity. Since the car starts from rest, its initial tangential velocity is zero (v₀ = 0).

Using the equation:

v = v₀ + at

where v is the final tangential velocity, v₀ is the initial tangential velocity, a is the tangential acceleration, and t is the time, we can solve for v:

v = 0 + (0.75 m/s²) * t

v = 0.75t m/s

The tangential velocity is related to the angular velocity (ω) and the radius (r) of the circular track:

v = ωr

Substituting the values:

0.75t = ω * 300

Since the car starts from rest, the initial angular velocity (ω₀) is zero. So, we have:

ω = ω₀ + αt

ω = 0 + (0.75 m/s²) * t

ω = 0.75t rad/s

We can now substitute the value of ω into the equation:

0.75t = (0.75t) * 300

Simplifying the equation gives:

0.75t = 225t

t = 0.75 seconds

The time elapsed is 0.75 seconds.

To calculate the distance traveled (s), we can use the equation:

s = v₀t + (1/2)at²

Since the initial velocity (v₀) is zero, the equation becomes:

s = (1/2)at²

s = (1/2)(0.75 m/s²)(0.75 s)²

s = (1/2)(0.75 m/s²)(0.5625 s²)

s = 0.2119 meters or approximately 21.19 centimeters

Therefore, the car travels a distance of approximately 0.2119 meters or 21.19 centimeters.

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Answer:

4.167

Explanation:

ittravels 4.167metres per second