According to the Law of Laplace, if the pressure increases, what do we expect to happen to wall tension?

Answer:c 40kg

Explanation:

Answer:

B. 30 kg * m/s

Explanation:

college board answer

Answer:

T

Explanation:

Hard to know when the wind will blow .

The principal limitation of wind power is unpredictability. this statement is very much true.

In order to produce electricity, wind turbines are mostly used in wind power as well as wind energy. In comparison to burning fossil fuels, wind energy is a well-liked, environmentally friendly, renewable energy source.

Although weather forecasting has become more accurate over time, it is still challenging to anticipate how much and when wind will blow where and when it will. Even though some regions are known to experience more wind than the others, there is currently no way to predict that however much wind here will be because of the inconsistent nature of weather patterns.

Therefore, the given statement is true.

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Your question is incomplete but most probably your full question was,  

The principal limitation of wind power is unpredictability. Please select the best answer from the choices provided

a. True

b. False

The change in gravitational potential energy of the spacecraft as it moves from point B to point A is 8.3x10^9 J.

The change in gravitational potential energy of the spacecraft as it moves from point B to point A can be calculated using the formula:

                    \(ΔPE = -GMm(1/rA - 1/rB)\) , where

ΔPE is the change in gravitational potential energy,

G is the gravitational constant,

M is the mass of the planet,

m is the mass of the spacecraft,

rA is the distance from the planet's center at point A, and

rB is the distance from the planet's center at point B.

Using the given values, we have:

\(ΔPE = -(6.67x10^-11 Nm^2/kg^2)(1.50x10^24 kg)(650 kg)(1/5.00x10^7 m - 1/0)\)\(ΔPE = -(6.67x10^-11 Nm^2/kg^2)(1.50x10^24 kg)(650 kg)(1/5.00x10^7 m - 1/0)\)

Simplifying the expression, we get:

\(ΔPE = -8.3x10^9 J\)

Therefore, the change in gravitational potential energy of the spacecraft as it moves from point B to point A is \(8.3x10^9\)J, which is a negative value because the spacecraft is moving closer to the planet and its gravitational potential energy is decreasing.

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The streamlines equations are \(x^2 - y^2 = c_1\) and \(xy = c_2\), where \(c_1\) and \(c_2\) are constants.

The velocity field is given by,

\(V_x = x (x^2 + y^2)^-^1^/^2\)

\(V_y = y (x^2+ y^2)^-^1^/^2\)

Now, we know that the tangent to a streamline is always parallel to the velocity vector. Hence, for the streamline equations, we must have

\(dx/dy = V_x/V_y\)

Therefore,\((x/y) = V_x/V_y = x/y\)

⇒ \(x^2 - y^2 = c_1\)

or, \((x+y)(x-y) = c_1\)

Hence, the equation of the streamlines are given by \(x^2 - y^2 = c_1\)

Now, for the other streamline equation, let's differentiate both sides of \(V_x\)= constant along the streamline:

\(dx/ds = constant/y\)

And differentiate both sides of \(V_y\) = constant along the streamline:

\(dy/ds = constant/x\)

Multiplying both equations, we get

\(xdx/ds = ydy/ds\)

or,\(xdx = ydy\)

Integrating, we get

\(x^2/2 = y^2/2 + c_2\)

or,\(xy = c_2\)

Thus, the equations of the streamlines are \(x^2 - y^2 = c_1\) and \(xy = c_2\)

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Answer:

true

Explanation:

have a great day........

Astronomers determine the composition of the Sun's outer layers using a technique called spectroscopy.

Spectroscopy involves analyzing the light emitted by the Sun and splitting it into its component colors, creating a spectrum. Each element produces a unique set of spectral lines when its atoms absorb or emit light. By comparing the observed spectral lines to known patterns from laboratory tests, astronomers can identify the elements present in the Sun's outer layers, such as hydrogen and helium.
This information, along with other data from space probes and computer simulations, helps scientists understand the composition and processes occurring in the Sun's outer layers.

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Explanation:

studying hard is the only thing that could make the educational system better

I think the student when he studying first time then first he want to speak Korean and study hard for that but if he try then only he can be better

Explanation:

and he or she should have interest to study if he or she have interest then only their education will be better

and if he / she didn't have interest on study then we can't do anything........

Warming the bed with water is far more efficient than warming the bed with an iron, the difference is the specific heat capacity of water and iron.

The specific heat capacity of a substance can be defined as the amount of the heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree).

q = m x C x AT

As the specific heat of water is 4.18 J/g°C and the specific heat of iron is 0.450 J/g°C. Since, the specific heat of water is greater than the specific heat of iron.

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Answer:

Explanation:

What you forgot to include is the mass of the earth, which is 5.98 × 10²⁴ kg. NOW we can do the problem:

\(F=\frac{Gm_1m_2}{r^2}\) where m1 and m2 are the masses of the objects experiencing this force of gravity, F. G is the universal gravitational constant. Filling in:

\(2.00*10^{20}=\frac{(6.67*10^{-11})(7.34*10^{22})(5.98*10^{24})}{r^2}\)

We are going to rearrange and solve for r before we do any math on this thing:

\(r=\sqrt{\frac{(6.67*10^{-11})(7.34*10^{22})(5.98*10^{24})}{2.00*10^{20}} }\) and when we plug all that mess into our calculators we will do it just like that and then round to 3 significant digits at the very end.

Doing all of that gives us that

r = 3.83 × 10⁸ m

Answer:

D  All

Explanation:

Mechanical and electromagnetic waves both carry energy. The mechanical wave via the motion/vibration of particles, and the electromagnetic via vibration of the electric and magnetic fields.

We know of interference patterns of light (electromagnetic interference), as well as interference of mechanical waves of water generating typical patterns.

Both, electromagnetic and mechanical waves go through the process of reflection when hitting a barrier (mirror for example in the case of light, and a solid wall for example in the case of water waves.

So the correct answer is "All of the above"

The 60 degrees is needed between the direction of polarized light and the axis of a polarizing filter to cut its intensity to one-fifth of its initial value.

It is given that axis of a polarizing filter to cut its intensity to one-fifth of its initial value.

It is required to find the angle between the direction of polarized light and the axis of a polarizing filter to cut its intensity to one-fifth of its initial value.

Suppose the angle between the polarizer and the axis of filter is θ.

The intensity of light that is passing after the filter is 0.2 l₀.

From the law of Malus, we have

I = I₀ \(cos^{2}\)θ

0.2I₀= I₀ \(cos^{2}\)θ

0.2 =  \(cos^{2}\)θ

\(cos\\\)θ = 0.447

θ = 60°

Thus the angle between the direction of polarized light and the axis of a polarizing filter is 60 degree.

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The wavelength of the electron which has a speed of  1.9 x 10⁸ m/s is 0.384 x 10⁻¹² m.

The speed of the electron = 1.9 x 10⁸ m/s

The wavelength of the electron can be found using the formula

                  λ = h/mv

where λ is the wavelength

           h is the Planck constant

           m is the mass of the electron

           v is the velocity of the electron

Let us substitute the known values in the above equation,

                  λ = 6.636 x 10⁻³⁴ / 9.1 x 10⁻³¹ x 1.9 x 10⁸

                     = 6.636 x 10⁻³⁴ / 17.29 x 10⁻²²

                     = 0.384 x 10⁻³⁴ x 10²²

                     = 0.384 x 10⁻¹² m

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Answer:

28 N

Explanation:

From the question given above, we were told that 10 N force and 18 N force act in the same direction on the object.

The net force acting on the object can be obtained by simply adding both forces together since they both act on the object in the same direction. This is illustrated below:

Force 1 (F₁) = 10 N

Force 2 (F₂) = 18 N

Net force (Fₙ) =?

Fₙ = F₁ + F₂ (since they both act in the same direction)

Fₙ = 10 + 18

Fₙ = 28 N

Therefore, the net force acting on the object is 28 N.

Answer:

The correct answer is - radiant.

Explanation:

Electromagnetic waves are the transverse waves that get energy as radiation from the source and transfer to an absorber so, the radiant energy is the energy of electromagnetic waves.

Electromagnetic waves are can travel in space unlike mechanical waves and are made up of photons, tiny packets of energy. Electromagnetic waves or spectra include radio waves, infrared, light, microwaves, UV, X-rays, and gamma rays.

Answer:

Initial velocity (u) = 40 m/s

Distance travel in last 5 seconds = 100 m

Explanation:

Given:

Acceleration (a) = 8 m/s²

Final velocity (v) = 0 m/s

Find;

1] Initial velocity before 5 sec

2] Distance travel in last 5 seconds

Computation:

1] Initial velocity before 5 sec

v = u + at

0 = u + (-8)(5)

u - 40 = 0

Initial velocity (u) = 40 m/s

2] Distance travel in last 5 seconds

s = ut + (1/2)(a)(t²)

s = (40)(5) + (1/2)(-8)(5²)

s = 200 - 100

Distance travel in last 5 seconds = 100 m

Answer:

2.78m/s²

Explanation:

Complete question:

A box is placed on a 30° frictionless incline. What is the acceleration of the box as it slides down the incline when the co-efficient of friction is 0.25?

According to Newton's second law of motion:

\(\sum F_x = ma_x\\F_m - F_f = ma_x\\mgsin\theta - \mu mg cos\theta = ma_x\\gsin\theta - \mu g cos\theta = a_x\\\)

Where:

\(\mu\) is the coefficient of friction

g is the acceleration due to gravity

Fm is the moving force acting on the body

Ff is the frictional force

m is the mass of the box

a is the acceleration'

Given

\(\theta = 30^0\\\mu = 0.25\\g = 9.8m/s^2\)

Required

acceleration of the box

Substitute the given parameters into the resulting expression above:

Recall that:

\(gsin\theta - \mu g cos\theta = a_x\\\)

9.8sin30 - 0.25(9.8)cos30 = ax

9.8(0.5) - 0.25(9.8)(0.866) = ax

4.9 - 2.1217 = ax

ax = 2.78m/s²

Hence the acceleration of the box as it slides down the incline is 2.78m/s²

The electric field strength inside the capacitor does not depend on the distance between plates. Hence, Potential difference and Electric field strength is  -234V and -1.8 x 10^5 V/m respectively.

The ability of electrical fields to pass through a conventional vacuum is represented by the physical constant known as the permittivity of free space. The constant has a relative standard uncertainty of 1.5 x 10-10 and is equal to around 8.854 x 10-12 F/m (farad per metre).

Q= charge =>  ± 0.708 nC

E => electric field strength = Q/Aεο

A=> area of plates 2.10x 2.10 cm2.

εο = > 8.854 x 10-12 F/m.

E= -0.708 x10^-9/ (2.1 x 2.1 x 8.854 x 10^-4 x 10^-12)

 =  -1.8 x 10^5 V/m.

Potential difference = Ed => -1.8 x 10^5 x 1.3 x 10^-3 => -2.34 x 10^2V

                             => -234V.

The intensity of an electric field at a specific location is expressed quantitatively as "electric field strength." The volt per metre (V/m or Vm-1) is the common unit.

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Answer:

The number of freely moving neutrons decreases over time.

Explanation:

During a fission reaction, the total number of protons remains the same. In other words, the charge is conserved. It is the neutron number that decreases during a fission reaction.

Therefore, 'The number of freely moving neutrons decreases over time' is the correct answer.

A measure of mass per unit of volume. It is how much material a certain volume contains. ... If the volume of the object stays the same but the mass of the object increases then its density becomes greater.

a. The impedance of a series RC circuit is given by Z = sqrt(R^2 + (1/(2πfC))²). As the frequency decreases, the impedance of the circuit will increase, because the capacitive reactance (1/(2πfC)) will increase. So, the answer is increase.

This circuit is a series RC circuit, where R is the resistance and C is the capacitance. The frequency of the input signal is f = 1 kHz.

b. The phase angle of a series RC circuit is given by φ = arctan(-1/(2πfRC)). As the frequency decreases, the phase angle will increase, because the capacitive reactance will increase. So, the answer is increase.

c. The current in a series RC circuit is given by I = V/Z, where V is the voltage across the circuit and Z is the impedance of the circuit. As the impedance increases and the voltage stays constant, the current will decrease. So, the answer is decrease.

d. The voltage across the capacitor in a series RC circuit is given by Vc = I/(2πfC). As the current decreases and the frequency stays constant, the voltage across the capacitor will also decrease. So, the answer is decrease.

e. The voltage across the resistor in a series RC circuit is given by Vr = IR. As the current decreases and the resistance stays constant, the voltage across the resistor will also decrease. So, the answer is decrease.

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Answer:

females

Explanation:

The ova(egg) starts meiosis as a foetus but doesn't complete it until puberty. This is when the menstrual cycle will start to occur indicating the gametes( egg) is maturing and if not fertilized will be removed.

Answer:

vector quantity

I hope it's hepl u

Answer:

i don't know this answer

The plot depicts the position versus time of a toy car in one dimension. during 4 — 6 seconds and 0—2 seconds intervals is the car going backward.

Time in physics is determined by its measurement. This measurement requires extreme precision, which leads to the requirement that time be considered a linear continuum that is indivisible and not quantized. However, with sophisticated tools, time is now measured accurately using modern atomic time standards such as TAI and UTC.

In classical/non-relativistic physics, time is a scalar quantity and the general concept used is absolute time. Meanwhile, in relativity, time is understood as something relative. In contrast, Quantum Mechanics states that in fact time may not be a central concept in quantum theory as in classical physics and there is actually no such thing as quantum time.

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The goose will take 8.55 hours to travel 550 km at their average speed of 64.3km/h.

The goose average speed is around 40 mph or 64.3 km/h, but in good weather and wind conditions this speed can go up to 70 mph or 112 km/h

Considering the formula:

x = v.t

were x=space, v=speed and t= time. Clearing the equation, to find the hours of flight:

t = x/v = 550km / 64.3km/h = 8.55 hours

Average speed is a useful concept in many fields, including physics, engineering, and transportation. It can be used to calculate travel times, estimate fuel consumption, and analyze the performance of machines and vehicles. However, it is important to note that average speed does not take into account changes in direction or acceleration, which can affect the overall performance of an object.

Average speed is a measure of how quickly an object moves over a certain distance. It is defined as the total distance traveled divided by the time it takes to travel that distance. The units of average speed are usually expressed as distance per unit time, such as kilometers per hour, miles per hour, or meters per second.

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Let's calculate

\(\\ \rm\Rrightarrow C_6H_{12}O_6\)

\(\\ \rm\Rrightarrow 6(12)+12(1)+6(16)\)

\(\\ \rm\Rrightarrow 72+12+96\)

\(\\ \rm\Rrightarrow 180g/mol\)

When you stand on your bathroom scales and observe its reading, now you suppose you put your hand on top of a nearby counter and push down on it. The scale reading will decrease.

When you stand on a scale, it displays the weight on your body. The force applied by your body and your body's mass determine the scale reading. The scale reads the weight, not mass. The bathroom scale employs the normal force on your body. The weight of your body applies to the ground. The force that the ground exerts on your body equals the weight.The force acting on the scale in an opposite direction is your weight force. If you put your hand on a nearby counter and push down on it, you apply an external force to the ground. So, the force exerted by the ground will also increase, causing the scale's reading to decrease.

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The temperature of the plasma is 1.98 x 10^7 K and the equivalent temperature is 1.73 keV. The energy density of the plasma is 5.17 x 10^-4 J/m³.

follows:

Temperature of plasma can be given by;

\({tex}T=\frac{m_ev^2}{3k_B}=\frac{2}{3}\frac{E_k}{k_B}=\frac{E}

{n k_B V}=\frac{P}{nk_B}{/tex}{tex}k_B = 1.38 × 10^{-23} J K^{-1} = 8.617 × 10^{-5} eV K^{-1}{/tex}\)

where mₑ is the mass of an electron,

k_B is the Boltzmann constant,

E_k is the kinetic energy,

E is the total energy,

n is the number density,

V is the volume,

and P is the pressure of the plasma.

Temperature of the plasma,

\(T = (3.2 x 10³ Pa) / (1020 ions/m³ x 1.38 x 10^-23 J K⁻¹) = 1.98 x 10^7 K\)

The equivalent temperature,

\(T' = (1.38 x 10^-23 J K^-1 x 1.98 x 10^7 K) / (1.6 x 10^-19 J/eV) = 1.73 keV\)

Given,

Number of ions, n = 1020 ions/m³

Number of electrons, ne = 1020 ions/m³

Pressure of plasma, P = 3.2 × 10³ Pa

Density of plasma can be given as;

{tex}ρ = \frac{m_i n}{V} = \frac{m_e n_e}{V}{/tex}

where mᵢ is the mass of an ion and n is the number density.

Volume can be given as;

{tex}V=\frac{n}{N_A}{/tex}

where N_A is the Avogadro's number.

Number density can be given as;

{tex}n=N_A\rho{/tex}

Energy density can be given as;

{tex}u=\frac{3}{2}nk_BT=\frac{3}{2}\frac{P}{k_B}{/tex}

Energy density of the plasma,

u = (3/2) x (1020 ions/m³) x (1.38 x 10⁻²³ J/K) x (1.98 x 10⁷ K) = 5.17 x 10⁻⁴ J/m³

The temperature of the plasma is 1.98 x 10⁷ K and the equivalent temperature is 1.73 keV. The energy density of the plasma is 5.17 x 10⁻⁴ J/m³.

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Answer:

PE = 58.8J

Explanation:

potential energy = mgh

mass = 2kg

g = 9.8m/s^2

h = 3m

Direct wave Propagation :-When radio waves travel from the transmitter antenna toward the receiver antenna in a straight line, both antennas are within each other's horizon view.

Ocean waves, electromagnetic waves, and stadium crowd waves are most often referred to as transverse waves. Transverse waves are so-named because the waves' periodic disturbances are at right angles to the direction of propagation. In these waves, the oscillation of the particles or fields is perpendicular to the direction of wave propagation, creating a distinct "up and down" motion along the path of the wave.

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