Light is incident upon two polarizing filters arranged in tandem. The filters are crossed so that their polarization directions are perpendicular. The transmitted intensity through the second filter
Answers: is 100%
depends on the frequency of the incident light.
depends on the intensity of the incident light.
is zero.

Explanation:

The area between the speed-time graph f a body and time axis measures the distance travelled by the body

The angular velocity at point A is greater than that of point B. This is because as the wheel is rotating with decreasing angular velocity, the linear speed of point A is greater than that of point B due to the larger radius.

Therefore, point A has a greater angular velocity than point B. Both points will not have the same tangential acceleration or centripetal acceleration since they are at different distances from the axis of rotation.
The correct statement concerning the situation of two points located on a rotating wheel with decreasing angular velocity is: Both points have the same instantaneous angular velocity.
Angular velocity is a measure of how quickly something rotates around a fixed axis. Since both points A and B are on the same rigid wheel, they will have the same angular velocity at any given moment, as they rotate through the same angle in the same amount of time. The other statements are not true because:

1. Tangential acceleration depends on the distance from the axis of rotation, so point A and point B will have different tangential accelerations.
2. Centripetal acceleration also depends on the distance from the axis of rotation, so point A and point B will have different centripetal accelerations.
3. Angular velocity is the same for all points on the rotating wheel, so it is not greater at point A than at point B.

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Answer:

C

Explanation:

Apply the uniform acceleration equation \(v^{2} = u^{2} +2as\)

v: Final velocity (When the stone reaches its maximum height)

u: Initial velocity (The velocity of the stone at the instance when it is thrown)

a: Acceleration due to gravity

s: Displacement of the stone

Take \(v=0m/s\) since the stone is momentarily at rest when it reaches its maximum height.

Take \(a = -9.81 m/s^2\), the negative sign indicates the stone is decelerating due to gravity.

Take \(s=10m\) as stated in the question.

\(0^2=u^2+2(-9.81)(10)\)

\(196.2=u^2\)

\(u=\sqrt{196.2}\)

\(u=14.00714104m/s\)

Therefore, the closest answer is C (\(14m/s\))

A torque of 3471.9 N·m is needed to produce an angular acceleration of 100 rpm/s in a flywheel with a diameter of 1.72 m and a mass of 902 kg.

First, let's convert the angular acceleration from revolutions per minute per second (rpm/s) to radians per second per second (rad/s²):

100 rpm/s = 100 × 2π/60 rad/s² ≈ 10.47 rad/s²

The moment of inertia of a flywheel can be calculated using the formula:

I = (1/2)mr²

where

m is the mass of the flywheel and

r is the radius (half of the diameter).

Thus, we have:

r = 1.72/2 = 0.86 m

m = 902 kg

I = (1/2) × 902 kg × (0.86 m)² ≈ 331.9 kg·m²

The torque (T) required to produce the desired angular acceleration (α) can be found using the formula:

T = I × α

T = 331.9 kg·m² × 10.47 rad/s² ≈ 3471.9 N·m

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The plane's speed relative to the ground when airspeed of the plane is given is calculated to be 329.64 km/h and the direction is 79.74° West or North.

Airspeed of the plane = 450 km/h

Wind speed is 80 km/h in a south direction.

The pilot should head in the direction,

OA = AB × cos θ

cos θ = OA/AB = 80/450 = 0.178

θ = 79.74°

When the airspeed is 450 km/h the pilot must head 79.74° West or North.

The speed of the plane in relation to the ground is,

OB = AB × sin θ

OB = 335 × sin (79.74°)

OB = 329.64

Therefore, the plane's speed relative to the ground is 329.64 km/h.

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Given that;The diameter of the pipe, d = 0.0127 mLength of the pipe, L = 20mWater enters in the pipe at 20 °C and exits at 80 °C.

Mass flow rate of water, m = 0.005 kg/sProperties for water;

Density, p = 992.1 kg/m³

Specific heat capacity, Cp = 4179 J/kg °C

Thermal conductivity, k = 0.631 W/m °CViscosity,

µ = 0.653 x 10^(-3) kg/m-s

Prandtl number, Pr = 4.32

Given, heat flux on the pipe surface, q, is uniform.From the Fourier's Law of heat conduction;`q = -k (d T / d x)`Where, T is the temperature and x is the distance

Where T1 is the inlet temperature and T2 is the outlet temperature of water.In terms of q,

`q = m Cp (T2 - T1) / π d L`

On substituting the values,`

q = (0.005)(4179)(80-20)/[π(0.0127)(20)]`

The heat transfer rate, q = 6572.32 W

Surface temperature,

`Ts(x=14m)

= (q/(πd)) (1/4) (1/h) + Ti

`Where Ti is the inlet temperature of water. Here, we need to find h which can be found using the Reynolds number,

Re.`Re = p V d / µ``Pr = Cp µ / k`

From the relationship between Re and Pr, we can find the Nusselt number,

Nu.`Nu = 0.023 Re^(4/5) Pr^(0.4)`

Assuming the pipe is smooth, we can use the Dittus-Boelter equation to find the heat transfer coefficient, h.`

Nu = 3.66``Re^(0.8)``Pr^(0.4)`

On substituting the values,`

Re = p V d / µ``

Re = 992.1 (4 x 0.005) (0.0127) / (0.653 x 10^(-3))``

Re = 12134.59`And,

`Nu = 3.66 (12134.59)^(0.8) (4.32)^(0.4)`

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The maximum power that can be delivered by a 1.6- cm -diameter laser beam propagating through air is 0.024009 x 10⁸ W.

Laser Beam power is the decisive factor that controls the absorption of energy. Due to this radiations have constant relative phase. These are  coherent sources.

Now the maximum electric Field strength in air is 3 MV/m as per standard value because to compute the maximum power we need maximum electric field.

\(Intensity = \frac{Power}{Area}\)-----------------------------------[1]

To find power:-

\(Power= Intensity * Area\)-------------------------[2]

\(Area = \pi x^{2}\)

Area refers to cross sectional area. And area of circle = π( radius )².

so x= radius .

\(x= \frac{diameter}{2}\)

=1.6/2 ⇒0.8cm

therefore , area = 3.14 x 0.8²

= 2.0096 cm²

For maximum power condition

\(Power = \frac{c\alpha E^2 A}{2}\)------------------------------------[3]

Putting the below values in equation 3

c= speed of light = 3 x 10⁸m/s

E= electric field = 3 x 10⁶ V

A= area = 2.0096 cm²⇒ 0.00020096 m²

α= Permittivity of space = 8.85 x 10⁻¹²

Power = (0.04801 x 10⁸)/ 2

= 0.024009 x 10⁸ W

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Answer:

right    

Explanation:

The up and down forces cancel

  then you are left with a    -200    and a  + 400

     resulting in a + 200   (to the right)

The speed of the spaceship is approximately 0.866c.

To determine the speed of the spaceship, we can utilize the formula for length contraction, which states that the contracted length (L') is equal to the rest length (L) multiplied by the square root of (1 - v²/c²), where v is the velocity of the spaceship and c is the speed of light.

Given that the contracted length is 27.6 m - 13.8 cm = 27.467 m and the rest length is 27.6 m, we can solve for v. Rearranging the formula, we have v = c * sqrt(1 - (L'/L)²).

Plugging in the values, v = c * sqrt(1 - (27.467 m / 27.6 m)²). By calculating this expression, we can determine the speed of the spaceship.

In summary, to find the speed of the spaceship when it contracts by 13.8 cm according to an observer on Earth, we can use the concept of length contraction and the given lengths. By applying the appropriate formula and calculating the expression, we can determine the speed of the spaceship.

Therefore, the speed of the spaceship is approximately 0.866c

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We have that The amount of winkies are equal to 89 wazoos is

x=135.06

From the question we are told that

5.6 winkies are equal to 3.69 wazoos.

winkies are equal to 89 wazoos?

Generally the equation for the Winkies is mathematically given as

\(x=\frac{89*5.6}{3.69}\\\\Therefore\\\\x=\frac{89*5.6}{3.69}\)

Therefore

The amount of winkies are equal to 89 wazoos is

x=135.06

In conclusion

The amount of winkies are equal to 89 wazoos is

x=135.06

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For parallel combination:

Total Resistance :   \(\frac{1}{Rp} = \frac{1}{R1} + \frac{1}{R2} + \frac{1}{R3}\)

Current is the overall flow of electrons through a conductor and can be defined as the speed of the flow of electrons. Resistance is defined as the opposition to the current flow. Circuits must have resistance to convert electrical energy into light, heat, or motion. Resistance is called the directional movement of electrons that form an electric current. It is also known that electrons do not move freely in the crystal structure of a conductor. Resistance is the inherent opposition to the flow of electrons present in a conductor. Inductance is the property of any circuit to resist any change in the current while capacitance is the property of the circuit to resist any change in voltage

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We may be aware that, for example, a car leaving a stop sign would move farther in a given amount of time the faster it accelerates.

acceleration is the rate of change in both speed of velocity over time. When anything moves faster or slower in a straight line, it is said to have been accelerated. So because direction is always shifting, motion on a circle accelerates even while the speed is constant.

An object's velocity is altered by a net force, and acceleration increases with net force. To accelerate at the same rate as less massive objects, more massive objects need greater net forces.

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Answer:

Long question good luck:)

Explanation:

Answer:7

Explanation:

because its the right answer

Answer:

In 1687, Newton published one of the most important scientific books in history, the Philosophiae Naturalis Principia Mathematica, commonly known as the Principa. It was in this work that he first laid out his three laws of motion.

The period of a wave is the time it takes for one complete wave to pass a fixed point. We are given that 4 complete waves pass a fixed point in 10 seconds.

To find the period, we can divide the total time by the number of complete waves:  10 seconds ÷ 4 waves = 2.5 seconds per wave


To determine the period of a water wave, we need to know how much time it takes for one complete wave to pass a fixed point. In this case, 4 complete waves pass in 10 seconds.

Step 1: Find the time it takes for one complete wave to pass.
Divide the total time (10 seconds) by the number of complete waves (4 waves).

10 seconds / 4 waves = 2.5 seconds

Step 2: Identify the corresponding answer choice.
The period of the water wave is 2.5 seconds, which corresponds to answer choice C.

Your answer: C: 2.5 s

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Answer:

\(2.0\:\mathrm{J}\)

Explanation:

The elastic potential energy of a spring is given by:

\(U_s=\frac{1}{2}kx^2\), where \(k\) is the spring constant and \(x\) is the displacement from equilibrium.

Solving for \(U_s\), we get:

\(U_s=\frac{1}{2}\cdot 100\cdot 0.2^2,\\U_s=\boxed{2.0\:\mathrm{J}}\)

Answer:

B small positive charge

Explanation:

Answer:

See below

Explanation:

I will assume each resistor is 120 ohms

  in series , the resistance just sums.... to 120 + 120 + 120 = 360 ohms

  in parallel they are   1 / (1/120 + 1/120 + 1/120) = 1/ (3/120) = 40 ohms

Answer:

To find the y-component of the second car's initial velocity, we can use the principle of conservation of momentum. This principle states that the total momentum of a system remains constant unless there is an external force acting on the system.

In this case, we can consider the two cars as a system, and we can use the principle of conservation of momentum to find the y-component of the second car's initial velocity.

We can write the equation for conservation of momentum as follows:

m1v1 + m2v2 = (m1+m2)*v

Where:

m1 is the mass of the first car (1210 kg)

v1 is the velocity of the first car (15.2 m/s, NE at 45.0°)

m2 is the mass of the second car (1540 kg)

v2 is the velocity of the second car (the unknown we are trying to find)

v is the velocity of the system after the collision (23.3 m/s, E at 0°)

We can use this equation to solve for the y-component of the second car's initial velocity (v2). First, we need to express the velocities in the x and y directions.

For the first car, we have:

v1x = v1 * cos(45°) = 15.2 m/s * cos(45°) = 10.6 m/s

v1y = v1 * sin(45°) = 15.2 m/s * sin(45°) = 10.6 m/s

For the second car, we have:

v2x = v2 * cos(0°) = v2 * 1 = 0 m/s

v2y = v2 * sin(0°) = v2 * 0 = 0 m/s

For the system after the collision, we have:

vx = v * cos(0°) = v * 1 = 23.3 m/s

vy = v * sin(0°) = v * 0 = 0 m/s

Now we can substitute these values into the equation for conservation of momentum and solve for v2y:

m1v1x + m2v2x = (m1+m2)vx

1210 kg * 10.6 m/s + 1540 kg * 0 m/s = (1210 kg + 1540 kg) * 23.3 m/s

12776.6 kgm/s + 0 kgm/s = 2750 kg * 23.3 m/s

12776.6 kgm/s = 2750 kg * 23.3 m/s

m1v1y + m2v2y = (m1+m2)vy

1210 kg * 10.6 m/s + 1540 kg * v2y = (1210 kg + 1540 kg) * 0 m/s

12776.6 kgm/s + 1540 kg * v2y = 0 kgm/s

12776.6 kgm/s = -1540 kg * v2y

v2y = -12776.6 kg*m/s / 1540 kg

v2y = -8.28 m/s

Therefore, the y-component of the second car's initial velocity is approximately -8.28 m/s.

Explanation:

The number of photons in the pulse is 1.21 × 1022.

The energy of a photon can be calculated using the equation:

E = hf, where

E is the energy of a photon,

h is the Planck's constant, and

f is the frequency of the light.

Then, using the equation c = λf, where

c is the speed of light,

λ is the wavelength of the light and

f is the frequency of the light, the frequency of the light can be determined.

Planck's constant (h) is a fundamental constant in quantum mechanics that relates the energy of a photon to its frequency.

Its value is 6.626 × 10-34 joule seconds (J·s).

The frequency of the light is:

f = c / λ

= 3.00 × 108 / 480 × 10-9

= 6.25 × 1014 Hz

The energy of the photon can be calculated:

E = hf

= 6.626 × 10-34 × 6.25 × 1014

= 4.14 × 10-19 J

The number of photons can be determined by dividing the energy of the pulse by the energy of a photon:

n = E / E_photon

= 5.0 × 103 / 4.14 × 10-19

= 1.21 × 1022 photons

Therefore, the number of photons in the pulse is 1.21 × 1022.

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The potential energy of the book is 11.025 joules.

The potential energy of a book resting on the edge of a desk 0.75 m above the floor can be calculated using the formula:

PE = mgh,

where m is the mass of the book, g is the acceleration due to gravity, and h is the height of the book above the floor.

the mass of the book is 1.5 kg

the height is 0.75 m

the acceleration due to gravity is 9.8 m/s²,

we can substitute these values into the formula and solve for the potential energy.

PE = mgh

PE = (1.5 kg) x (9.8 m/s²) x (0.75 m)

PE = 11.025 J

Therefore, the potential energy of the book is 11.025 joules.

The potential energy of an object is defined as the energy that an object possesses due to its position relative to other objects in its surroundings.

In this case, the book has potential energy because it is positioned above the floor, and this position gives it the potential to do work when it falls to the ground.

The greater the height of the book above the ground, the greater its potential energy, and the greater the work that can be done when it falls.

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The light oscillates electrons which then absorbs some of the energy and reemit it thereby causing a delay.

This is defined as a subatomic particle which has a negative charge. In the glass of water the light oscillates the electrons which absorbs some energy.

The re-emission is what slows light when it passes from air into glass or water.

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At approximately 1.55 seconds, the particle will be traveling at an angle of 57° with respect to the horizontal.

To determine the time at which the particle will be traveling at an angle of 57° with respect to the horizontal, we can break down the initial velocity into its horizontal and vertical components. Given that the initial vertical velocity is 7.6 m/s and the initial horizontal velocity is 0 m/s, we can use trigonometry to find the time at which the resultant velocity makes an angle of 57° with the horizontal.

Let's denote the time at which the particle reaches the desired angle as t. At time t, the horizontal component of the velocity remains unchanged at 0 m/s, while the vertical component changes due to acceleration from gravity.

The vertical motion of the particle can be described by the equation:

y = y₀ + v₀yt - (1/2)gt²

where:

y is the vertical displacement at time t,

y₀ is the initial vertical displacement (assumed to be 0 m in this case),

v₀y is the initial vertical velocity (7.6 m/s),

g is the acceleration due to gravity (approximately 9.8 m/s²),

and t is the time.

Since the particle will reach the desired angle when its vertical displacement becomes equal to its horizontal displacement, we have:

y = x

Substituting the values into the equation, we get:

(7.6)t - (1/2)(9.8)t² = 0

This equation represents the time it takes for the particle to reach the desired angle. We can solve it by rearranging and solving for t:

(1/2)(9.8)t² - (7.6)t = 0

Multiplying both sides by 2 to eliminate the fraction:

9.8t² - 15.2t = 0

Factoring out t:

t(9.8t - 15.2) = 0

From this equation, we have two possible solutions:

t₁ = 0 (which corresponds to the initial time)

t₂ = 15.2/9.8 ≈ 1.55 seconds

Since the particle is already moving vertically at 7.6 m/s, the second solution t₂ is the relevant one. Therefore, at approximately 1.55 seconds, the particle will be traveling at an angle of 57° with respect to the horizontal.

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True, some of the tiles in Byzantine mosaics were placed at an angle to reflect the light. This was done to enhance the visual appearance and create a dazzling effect.

Byzantine mosaics were used to decorate and embellish the walls, floors, and ceilings of buildings such as churches, palaces, and public places. They were made of small, colored, and shiny tiles called tesserae, which were arranged in various patterns to create intricate and sophisticated designs. One of the notable features of Byzantine mosaics was the use of tesserae at different angles to reflect the light and create a mesmerizing effect. The artists who created the mosaics were highly skilled and trained, and they knew how to use the properties of light to enhance their art. By placing the tiles at an angle, they could make the light bounce off the surface and produce a sparkling and radiant effect. The use of angles also allowed the artists to create depth, texture, and movement in their designs, which made them more dynamic and engaging. The Byzantine mosaics are still admired and revered for their beauty and craftsmanship, and they continue to inspire and influence artists and designers to this day.

In summary, some of the tiles in Byzantine mosaics were placed at an angle to reflect the light and create a dazzling effect. This technique was used by the artists to enhance the visual appearance and create depth, texture, and movement in their designs. The use of tesserae at different angles is one of the defining characteristics of Byzantine mosaics, and it reflects the skill and creativity of the artists who made them.

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Answer:

D. The force applied will contribute to the total net force.

good luck, i hope this helps :)

Answer:

Principle Archimedes is applied in building a ship and submarine using the manipulating that buoyancy, is controlled the ballast tank system.

Explanation:

Submarine is rather had they focused on main parts of the submarine,he is complex and long process implementation,the most submarine design like submarine stability.

Submarine stability is complete and the fundamental Archimedes principle to arrive the weight of submarine is equal to buoyancy force.

Submarine into the parts and components of ballast tank the sequence in diving and surfacing,there two vital parts:-  flood parts and air vents

flood parts:- at the bottom position and allow water to enter or leave that tank.

air vents:- air vents at the top of the pressure hall,and that they submarine dive.

this time submarine is most modern system is depth is 300 to 450 meters,high pressure  air is 15 bar is tank air valve.

submarine is basic of the effective volume of all the submarine surfaced condition,submarine minus to the free water flood is equal to the fully pressure hull,submarine is the surfaced condition.

The light has a frequency of 1.75 x 10¹³ hz. The speed of light is 3.00 x 10⁸ m/s. The wavelength of light is (λ) = 1.714 x 10⁴ nm

When a wave that propagates in a medium it has different lengths. That length of the wave is called the wavelength. It can be measured in m, cm, nm etc.

To calculate the wavelength we are using the formula,

λ=c/f

Here we are given,

c= The speed of light in zero space. = 3.00 x 10⁸ m/s.

f = The frequency of the light. = 1.75 x 10¹³ hz.

We have to calculate the wavelength of the light = λ m

Now we put the values in above equation we get,

λ=c/f

Or, λ=3.00 x 10⁸ / 1.75 x 10¹³

Or,  λ= 1.714 x 10⁻⁵ m

So we can easily say that,

The wavelength of light is (λ) =1.714 x 10⁻⁵ m = 1.714 x 10⁴ nm

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Answer:

Thermal energy can be transferred to one object to another in the form of heat. It causes molecules and atoms to collide with each other because of the rising of heat.

Explanation: Well thermal energy is a example of kinetic energy. It is heated by motion. It is heat that can be measured