The angle between the axes of two polarizing filters is 45.0°. By how much does the second filter reduce the intensity of the light coming through the

Since it is unclear which of the two frequencies is being raised, the beat frequency will rise if the frequency of the higher-frequency note is raised. On the other hand, if the frequency of the lower frequency note is raised, the beat frequency decreases.

what is frequency?

A recurring event's frequency is measured by how many times it occurs in a unit of time. To emphasize distinctions with spatial and angular frequencies, respectively, it is also sometimes referred to as ordinary frequency or temporal frequency.

Frequency is an essential property for characterizing the temporal rate of change found in oscillatory and periodic phenomena, such as mechanical vibrations, audio signals (sound), radio waves, and light, in science and engineering.

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Since it is unclear which of the two frequencies is being raised, the beat frequency will rise if the frequency of the higher-frequency note is raised. On the other hand, if the frequency of the lower frequency note is raised, the beat frequency decreases.

What is frequency?

A recurring event's frequency is measured by how many times it occurs in a unit of time. To emphasize distinctions with spatial and angular frequencies, respectively, it is also sometimes referred to as ordinary frequency or temporal frequency.

Frequency is an essential property for characterizing the temporal rate of change found in oscillatory and periodic phenomena, such as mechanical vibrations, audio signals (sound), radio waves, and light, in science and engineering.

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Answer:

B

Explanation:

Laboratories are usually controlled: however, in public places, there are way too many factors that could change an experiment

Once the circuit is completed, the voltage across the capacitor will reach a steady state and the charge will remain constant.

On the capacitor, this charge is referred to as the "steady-state" charge. The capacitance of the capacitor and the voltage applied to it will determine the steady-state charge on the capacitor. When voltage is applied to the capacitor, a charge builds up on the plates.An electronic component known as a capacitor stores energy in the form of an electric charge. It consists of two conducting plates separated by the insulating material dielectric. Until the capacitor is depleted or the voltage applied to it changes, the amount of charge on it constant.

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The relative speed of the two charged rods is approximately 234.3 m/s.

The potential energy of the system is given by:

U = k(Q/2) * (1/a - 1/(a + L))

Ui = 2U = kQ^2/L

The final kinetic energy of the rods can be found using the formula:

K = (1/2)mv²

v = √(2U/m) * \((L/4)^(1/2)\)

Substituting the given values, we get:

v = √(2 * 9 x \(10^9\) Nm²/C² * (10 x \(10^{-6}\)C)² / (0.5 kg)) * \((50/4)^(1/2)\)

v ≈ 234.3 m/s

Relative speed is the velocity of one object with respect to another object. It is the speed at which an object appears to move when observed from another object in motion or at rest. When two objects are moving in the same direction, their relative speed is the difference between their individual speeds. For example, if a car is moving at 50 km/h and a truck is moving at 60 km/h in the same direction, the relative speed of the car with respect to the truck is 10 km/h (60 km/h - 50 km/h).

Relative speed is an important concept in physics as it helps to understand the motion of objects with respect to each other, and is often used in calculations related to collisions and other physical interactions between objects. On the other hand, when two objects are moving in opposite directions, their relative speed is the sum of their individual speeds.

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Answer:

increase distance

Explanation:

Inclined planes make it easier to move objects to a higher elevation. The sloping surface of the inclined plane supports part of the weight of the object as it moves up the slope. As a result, it takes less force to move the object uphill.

Answer:

Hello your answer would be increase of distance

Explanation:

I know that because than you would have to go upward with the object.

The current change is 3e^-t [3cos (4.9t) - 0.306sin(4.9t)] Amperes.

(A) At t= 0 [inductor is short at steady rate and capacitor is open at steady rate]

Switch is in closed position

By applying KVL for loop

The sum of the voltage does in a closed loop is equal to zero

0.2 + 0.1 [iL (o⁻)] - 0.1 = 0

0.1  [iL (o⁻)] = 0.2 + 0.1

0.1 [iL (o⁻)] = 0.3

[iL (o⁻)] = 0.3 / 0.1

[iL (o⁻)] = 3A

By applying for loop 2

0.1v + 0 +  v(o⁻) = 0

v(o⁻) = -0.1 v

B

At t = 0

Switch opens

Apply Laplace transform (S-domain)

Source transformation,

[vc(o⁻)] = 0.1/s

1/cs = 1/0.25

cs = 0.25

3/1.25 * 0.25 = 0.6

C

By applying KVL,

(-0.2/5) + (0.1+0.25)iL(s) - 0.6 + 0.3 [iL(s)] + [-0.1/s] + 5/5 [iL(s)] = 0

iL(s)[0.1 +0.25 +0.3 +5/s] = 0.2/5 + 0.6 + 0.1/5

iL(s)[0.4 + 0.2s + 5/s] = (0.2 + 0.65 + 0.1)/5

iL(s)[(0.2s² +0.4s +5)/s] = 0.2/5 + 0.6 + 0.1/5

iL(s) = (3s + 1.5) / (s² + 2s + 25)

D

iL(s) = 3s + 1.5 / (s² + 2s + 25)

      = 3s + 1.5 / (s+1)² + 24

      = 3(s+1-1)+1.5 / (s+1)² + (4.9)²

      = 3(s+1) - 1.5 / (s+1)² + (4.9)²

iL(s) = 3(s+1) / (s+1)² + (4.9)²

iL(s) = [3(s+1) / (s+1)² + (4.9)²] - 0.306 * [(4.9) / (s+1)² + (4.9)²]

By applying inverse Laplace transform,

iL(t) = 3e^-t [3cos (4.9t) - 0.306sin(4.9t)] Amperes

Therefore, the current change is 3e^-t [3cos (4.9t) - 0.306sin(4.9t)] Amperes.

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The current is 3e^-t [3cos (4.9t) - 0.306sin(4.9t)] Amperes.

(A) At t= 0 [inductor is short at steady rate and capacitor is open at steady rate]

Switch is in closed position

By applying KVL for loop

The sum of the voltage does in a closed loop is equal to zero

0.2 + 0.1 [iL (o⁻)] - 0.1 = 0

0.1  [iL (o⁻)] = 0.2 + 0.1

0.1 [iL (o⁻)] = 0.3

[iL (o⁻)] = 0.3 / 0.1

[iL (o⁻)] = 3A

By applying for loop 2

0.1v + 0 +  v(o⁻) = 0

v(o⁻) = -0.1 v

At t = 0

Switch opens

Apply Laplace transform (S-domain)

Source transformation,

[vc(o⁻)] = 0.1/s

1/cs = 1/0.25

cs = 0.25

3/1.25 * 0.25 = 0.6

By applying KVL,

(-0.2/5) + (0.1+0.25)iL(s) - 0.6 + 0.3 [iL(s)] + [-0.1/s] + 5/5 [iL(s)] = 0

iL(s)[0.1 +0.25 +0.3 +5/s] = 0.2/5 + 0.6 + 0.1/5

iL(s)[0.4 + 0.2s + 5/s] = (0.2 + 0.65 + 0.1)/5

iL(s)[(0.2s² +0.4s +5)/s] = 0.2/5 + 0.6 + 0.1/5

iL(s) = (3s + 1.5) / (s² + 2s + 25)

iL(s) = 3s + 1.5 / (s² + 2s + 25)

     = 3s + 1.5 / (s+1)² + 24

     = 3(s+1-1)+1.5 / (s+1)² + (4.9)²

     = 3(s+1) - 1.5 / (s+1)² + (4.9)²

iL(s) = 3(s+1) / (s+1)² + (4.9)²

iL(s) = [3(s+1) / (s+1)² + (4.9)²] - 0.306 * [(4.9) / (s+1)² + (4.9)²]

By applying inverse Laplace transform,

iL(t) = 3e^-t [3cos (4.9t) - 0.306sin(4.9t)] Amperes

Therefore, the current change is 3e^-t [3cos (4.9t) - 0.306sin(4.9t)] Amperes.

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A man throwing his bag to move out of this slippery area will help him by providing a surface which increases the frictional force and therefore prevents him from slipping.

This is the type of force which resists the motion of one object against another and is formed when two substances rub or slide against one another. The main reason why people slip or fall is as a result of the low frictional force between the legs and the surface.

The bag will help increase the frictional force between the individual and the oily surface which will therefore prevent him from slipping and help him move out of the house.

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It is crucial to maintain a steady sound source, medium, distance, temperature, and pressure throughout the experiment in order to discover how frequency influences wavelength. This makes sure that any wavelength changes can be completely attributable to frequency changes.

In an experiment to determine how the frequency of a sound wave affects wavelength, several variables need to be held constant to ensure that any observed changes in wavelength can be attributed solely to changes in frequency.

The variables that should be held constant include:

1. Source of sound: The type and characteristics of the sound source should remain the same throughout the experiment. This ensures that any changes in wavelength are not influenced by variations in the sound source.

2. Medium of propagation: The medium through which the sound wave propagates should be consistent. For example, if the experiment is conducted in air, the air temperature, humidity, and pressure should be controlled and maintained at the same values.

3. Distance traveled: The distance between the source of the sound wave and the measuring device should be fixed. Altering the distance could introduce changes in wavelength due to factors like wave spreading or interference, which could confound the relationship between frequency and wavelength.

4. Temperature: The temperature of the medium can affect the speed of sound. To ensure that changes in wavelength are solely due to changes in frequency, the temperature should be held constant.

5. Pressure: Similar to temperature, variations in pressure can affect the speed of sound. Controlling the pressure helps maintain a consistent medium for sound wave propagation.

By keeping these variables constant, researchers can focus specifically on how changes in the frequency of the sound wave impact the wavelength, eliminating potential confounding factors that could distort the results.

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Answer:

aluminum and steel are both magnetics

Answer:

Because the size of the star has expanded, the surface cools down and goes from white-hot to red-hot. Because the star is brighter, redder and physically larger than before, we dub these stars "red giants"

The product (2 amperes × 2 volts × 2 seconds) is equal to 8 joules.

The formula for electrical power is P = VI, where P is power in watts, V is voltage in volts, and I is current in amperes. The product of amperes, volts, and seconds can be rearranged as follows:

(2 amperes × 2 volts × 2 seconds) = (2 amperes) × (2 volts) × (2 seconds)

= (4 volts) × (2 seconds) × (2 amperes)

= (4 volts) × (4 coulombs/second)

= 16 joules

However, the question asks for the product in units of coulombs, newtons, joules, calories, or newton-amperes. Since the answer is in joules, the correct option is (C) 8 joules.

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The automobile will travel for 300 m during that time. The result is obtained by using the formula for uniformly accelerated motion.

The equations apply in uniformly accelerated motion in horizontal dimension are

v₁ = v₀ + at

v₁² = v₀² + 2ax

x = v₀t + ½ at²

Where

We have

Find the distance that the automobile travel during that time!

From that information, we can find the acceleration.

a = (v₁ - v₀)/t

a = (40 - 20)/10

a = 2 m/s²

The distance will be

x = v₀t + ½ at²

x = 20(10) + ½ (2)(10)²

x = 200 + 100

x = 300 m

Hence, that time the automobile will reach the distance of 300 m.

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Answer: The speed limit is 15 mph when you come within 100 feet of a railroad crossing and you cannot see the tracks for 400 feet in both directions. You may go faster than 15 mph if the crossing is controlled by gates, a warning signal, or a flagman.

Explanation: hope this helps

Answer:69

Explanatioits funnyn:

Answer

A spherical bob creates more control for the simple pendulum experiment. An irregular bob like a large piece of paper for instance, will create too much air resistance for a basic classical experiment to yield predictable results within the academic lab.

The puck must rotate with a speed of 3.44 m/s to keep the hanging block at rest.

To keep the hanging block at rest, the tension in the string must be equal to the weight of the block. We can start by finding the tension in the string using the weight of the hanging block:

T = mg = (1.20 kg)(9.81 m/s^2) = 11.77 N

The tension in the string provides the centripetal force that keeps the puck moving in a circle. The centripetal force is given by:

F = ma = m(v^2/r)

where m is the mass of the puck, v is its speed, r is the radius of the circle, and a is the centripetal acceleration.

Solving for v, we get:

v = sqrt(ra) = sqrt(r(T/m)) = sqrt((0.40 m) × (11.77 N)/(0.20 kg)) = 3.44 m/s

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To continue testing his hypothesis, Neil should repeat the experiment, but only wait 20 seconds before testing the comb's attractive effects.

In a controlled experiment, all other factors are held constant with the exception of one. One or more other groups are studied with all conditions being the same as the control group and each other except for one variable. Typically, a collection of data is considered to be the control group, which is often the normal or usual state.

Comparing a control group to an experimental group is a popular form of controlled experiment. The factor being examined is the only difference between the two groups' variables.

A controlled experiment has the benefit of making it simpler to determine whether the results are meaningful.

Imagine you want to know if the type of soil influences how long it takes a seed to germinate and you choose to conduct a controlled experiment to find out. Five similar pots might be used, each filled with a different kind of soil, and each with identical bean seeds. The pots could then be placed in a sunny window, watered equally, and the time it takes for the seeds in each pot to sprout could be recorded.

This is a controlled experiment because the only variable that will change is the kind of soil you use. You are in charge of these options.

Here in given case Neil's goal is to find out how quickly charge dissipate in humid air. So he should try his hypothesis by varying wait time.

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The reaction time of the student is approximately 0.2 s (Option B)

Considering the question given above, the following formula can be use to obtain the time

h = ½gt²

Where

Now, let us calculate the reaction time of the student. This is shown below:

h = ½gt²

0.20 = ½ × 9.8 × t²

0.20 = 4.9 × t²

Divide both side by 4.9

t² = 0.20 / 4.9

Take the square root of both side

t = √(0.20 / 4.9)

t = 0.2 s

Thus, the reaction time is 0.2 s (Option B)

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Note that this is a trick question. It is true that the mass of a star affects its life cycle but all stars must go through the stages listed below. Note that the larger the solar mass of a star, the shorter its life cycle. Hence, in each of the stages given here is what will occur:

Prenatal Stage

Birth Stage

Adolescence/Adulthood

Middle age

Old age

Death

The solar mass is a unit of mass used to measure the masses of objects in the solar system, including stars. It is defined as the mass of the Sun, which is approximately 1.989 x 10³⁰ kilograms, or about 333,000 times the mass of the Earth.

Hence, since the earth's sun is 1.989 x 1010³⁰ kilograms, a star described as having 1 solar mass is simply a star equivalent of the Earth's sun.

Note however that the solar mass is often used as a standard unit of mass for comparing the masses of objects in the universe, such as planets, asteroids, and stars.

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Full Question:

Compare the following stages in the lives of a human being and a star: prenatal, birth, adolescence/ adulthood, middle age, old age, and death. What does a star with a solar mass of 1 solar mass do in each of these stages?

Answer:

-1.24 m/s

Explanation:

Total momentum before collision = total momentum after collision

Total momentum before collision = (mass of full back * velocity of fullback) + (mass of lineman * velocity of line man).

Mass of full back = 112 kg, mass of line bag = 120 kg, velocity of full back  6 m/s (east), velocity of line back = -8 m/s (west). Hence:

Total momentum before collision = (112 * 6) + (120 * -8) = 672 - 960 = -288 kgm/s

The total momentum after collision = (mass of full back + mass of line back) * velocity after collision.

Let velocity after collision be v, hence:

The total momentum after collision = (112 + 120)v = 232v

Total momentum before collision = total momentum after collision

-288 = 232v

v = -288 / 232

v = -1.24 m/s

Therefore after collision, the two players would move at a velocity 1.24 m/s west (the same direction as the lineman).

A plane accelerates from rest at a constant rate of is an example of a kinematic problem. Kinematic equations describe motion, allowing for predictions of position, velocity, and acceleration over time.

Here is an explanation of the kinematic equations:

1. v = u + at (equation 1): This equation defines the relationship between initial velocity, final velocity, acceleration, and time. It is used when an object starts moving from rest. Here, v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time taken.

2. s = ut + 1/2at² (equation 2): This equation defines the relationship between distance traveled, acceleration, time, and initial velocity. Here, s is the distance traveled, u is the initial velocity, t is the time taken, and a is the acceleration.

3. v² = u² + 2as (equation 3): This equation defines the relationship between final velocity, initial velocity, acceleration, and displacement. Here, v is the final velocity, u is the initial velocity, a is the acceleration, and s is the displacement. Suppose a plane accelerates from rest at a constant rate of a. If the velocity of the plane at time t is v, then we can use Equation 1 to determine its velocity:

v = u + ata

= v/t - u/t

If the plane accelerates uniformly, we can use Equation 2 to find its displacement. The equation is:

s = ut + 1/2at²

Substituting the values we have:

s = 0*t + 1/2a * t²s

= 1/2at²

The displacement is directly proportional to the square of the time, which means that if the time is doubled, the displacement is quadrupled. To determine the time taken for the plane to travel a certain distance, we can use Equation 3:

v² = u² + 2ass

= (v² - u²) / 2a

The equation states that the time is proportional to the square root of the distance traveled. Therefore, if the distance is doubled, the time is multiplied by the square root of two.

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Answer:

Nervous system and immune system

Explanation:

The nervous system is involved because you immediately jumped away, that ur brain and nerves initiating the fight or flight response. The immune system is involved because the tack most likely pierced your skin, so your immune system needs to work to make sure the wound does not get infected.

The distance between the two buses is 48km.

Let us assume that the velocity of the first bus is 36 km/h and that of the second bus is 108 km/h.

To find the distance between them, we will consider that both buses move in opposite directions.

Distance travelled by bus 1 in 20 minutes = 36 km/h × 20 min ÷ 60 min/h = 12 km

Distance travelled by bus 2 in 20 minutes = 108 km/h × 20 min ÷ 60 min/h = 36 km

Total distance between them = distance travelled by bus 1 + distance travelled by bus 2= 12 km + 36 km= 48 km

Therefore, the distance between them in 20 minutes is 48 km.

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The Rayleigh length and Rayleigh range \(Z_{R}\) are calculated: Here is the light's λ wavelength, and n is really the refraction index. This same width w of the beam is 1.414 larger at a distance from the waist equitable.

To the Rayleigh range \(Z_{R}\) that it is at the focus in W = \(W_{0}\) which, this same beam waist. A laser beam's Rayleigh length (and otherwise Rayleigh range) is the distance out from the beam waist (within the propagation path) where the wave radius is elevated by the squared of 2.

This means that the toggle area of a circular beam is doubled at this point. The Rayleigh beam concept takes into account rotational inertia effects that the Euler-Bernoulli beam theory does not.

As a result, the model is applied to a greater range of regimes. Waves in well before Rayleigh beams on elastomer fundaments are given special consideration.

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Answer:

I believe it is nature vs nurture

Explanation:

The term that represents the debate between genetic and environmental influences on behavior is nature versus nurture. Thus, the correct option for this question is C.

Genetic influences may be defined as the types of concerns that significantly deal with the behavioral and psychological characteristics of an individual which include their intellectual ability, personality, and risk for mental illness with respect to their genetic sequences.

When you talk about the debate between genetic and environmental influences on behavior, the term nature reflects the environmental aspect of the debate while the term nurture reflects the genetic aspects of the debate.

Therefore, nature versus nurture is the term that represents the debate between genetic and environmental influences on behavior. Thus, the correct option for this question is C.

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Answer:

Jaliba Kuyateh is the most famous and wealthiest Gambian musician.

The kayak has momentum since it is not zero, but a ship sitting rest must have momentum of zero.

-A moving bullet has a huge momentum since it has an exceptionally large velocity even if it has very little mass, therefore it is extremely difficult to stop. -A truck carrying a lot of cargo must slow down before a stop signal since it has a lot of momentum and the same speed.

Thus, an object's resistance towards change in movement (or lack of motion) is described by its inertia, and its amount of motion is described by its momentum.

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According to the question, the critical angle for total internal reflection within the water is 48.9 degrees.

Reflection is a process of thinking deeply and critically about a particular topic or experience. It is a way to gain deeper understanding and create connections between the past and the present. Reflection is often used to help people make sense of their own experiences and to gain insight into the impact of their actions. Reflection can also be used as a way to make sense of the world around us, to gain insight into different perspectives, and to develop empathy for people from different backgrounds.

In this case, the incident medium is water and the refracting medium is glass. Therefore, we can solve for the angle of incidence (θi) using the following equation: sin θi = (1.50/1.33) × sin θr

where θr is the angle of refraction in the glass. Since θr is 90 degrees when total internal reflection occurs, the critical angle for total internal reflection in water is:

θi = sin-1((1.50/1.33) × sin 90) = 48.9 degrees

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Answer: \(7312.76\ J\)

Explanation:

Given

Mass of crate is m=574 kg

The crate is raised up to a height of 1.3 m

time taken t=2 s

Work done to raise the crate is equal to the change in its potential energy

\(\Rightarrow \text{Work done W=}mgh\\\Rightarrow W=574\times 9.8\times 1.3\\\Rightarrow W=7312.76\ J\)