Answers
Answer:
3) Transmitted intensity of light if unpolarized light passes through a single polarizing filter = 40 W/m²
- Transmitted intensity of light if an additional polarizer is added perpendicular to the first polarizer in the setup described = 7.5 W/m²
Explanation:
Complete Question
3) What is the transmitted intensity of light if unpolarized light passes through a single polarizing filter and the initial intensity is 80 W/m²?
- What is the transmitted intensity of light if an additional polarizer is added perpendicular to the first polarizer in the setup described in Question 3 (the setup)? Show all work in your answer.
The image of this setup attached to this question as obtained from online is attached to this solution.
Solution
3) When unpolarized light passes through a single polarizer, the intensity of the light is cut in half.
Hence, if the initial intensity of unpolarized light is I₀ = 80 W/m²
The intensity of the light rays thay pass through the first single polarizer = I₁ = (I₀/2) = (80/2) = 40 W/m²
- According to Malus' law, the intensity of transmitted light through a polarizer is related to the intensity of the incident light and the angle at which the polarizer is placed with respect to the major axis of the polarizer before the current polarizer of concern.
I₂ = I₁ cos² θ
where
I₂ = intensity of light that passes through the second polarizer = ?
I₁ = Intensity of light from the first polarizer that is incident upon the second polarizer = 40 W/m²
θ = angle between the major axis of the first and second polarizer = 30°
I₂ = 40 (cos² 30°) = 40 (0.8660)² = 30 W/m²
In the same vein, the intensity of light that passes through the third/additional polarizer is related to the intensity of light that passes through the second polarizer and is incident upon this third/additional polarizer through
I₃ = I₂ cos² θ
I₃ = intensity of light that passes through the third/additional polarizer = ?
I₂ = Intensity of light from the second polarizer that is incident upon the third/additional polarizer = 30 W/m²
θ = angle between the major axis of the second and third/additional polarizer = 60° (although, it is 90° with respect to the first polarizer, it is the angle it makes with the major axis of the second polarizer, 60°, that matters)
I₃ = 30 (cos² 60°) = 30 (0.5)² = 7.5 W/m²
Hope this Helps!!!
Related Questions
500000000 in standard form
Answers
Answer:
5.0 x 10^8
Explanation:
because u moved it 8 times to it places
Why is temperature scalar?
Answers
But the energy which transfer by virtue of a temperature difference is a vector quantity, as it has both magnitude and direction of motion (from High temperature to low temperature region).
nervous tissue is made up of newrogila and what other type of cell
Answers
The nervous tissue consists of two types of cells one is known as glial cells while the other is known as neurons.
The nervous tissue comprises neuroglia and what other type of cell?
The nervous system is very complex. We know that there are only two types of cells in the nerve tissue. The actual nerve cell is known as a neuron. The neuron is the conducting cell that can transmit impulses and the structural units of the nervous system. There are other types of cells is well which are known as the neuroglia, or glial, cells.
Basically, the nervous tissues consist of two cells one is called nerve cells while the other is called glial cells which help to transmit nerve impulses and also provide nutrients to neurons.
So we can conclude that the nervous tissue is made up of two types of cells, neurons, and glial cells.
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A solid sphere and a hollow sphere each of mass M and radius R are released at the same time from the top of an inclined plane. Which one of the following statements is necessarily true?
A.Both spheres will reach the bottom at the same time.
B. The hollow sphere will reach the bottom with the greater kinetic energy.
C.The solid sphere will reach the bottom first.
D. The hollow sphere will reach the bottom first.
E. The solid sphere will reach the bottom with the greater kinetic energy.
Answers
Answer:
C. The solid sphere will reach the bottom first.
E. The solid sphere will reach the bottom with the greater kinetic energy.
Explanation:
To answer this,the sphere that has the smaller mass moment of inertia will be the one that will have the largest acceleration down the plane. And we know that higher acceleration means higher speed.
Now, moment of inertia of both spheres are;
I_solid sphere = (2/5)mr² = 0.4mr²
I_hollow sphere = (2/3)mr² = 0.67 mr²
Now, it is clear that the solid sphere has the smaller mass moment of inertia. This means that the solid sphere will have more acceleration and as well higher speed and will thus reach the bottom first.
Also, the higher the speed, the higher the kinetic energy since K.E = ½mv².
Thus, options C & E are correct.
In the 4.6 billion year history of the Earth, how many times have continents of our planet gone through major shifts if these shifts happen on average every 525 million years?
Answers
continents of the Earth have gone through major shifts approximately 8.76 times in the 4.6 billion year history of the planet.
the number of major shifts that have occurred in the 4.6 billion year history of the Earth, we can divide the total time by the average time between shifts:
Number of shifts = Total time / Average time between shifts
the given values, we get:
Number of shifts = 4.6 billion years / 525 million years per shift
To simplify the calculation, we can convert both values to the same units, such as years.
1 billion years = 1,000,000,000 years
Therefore, 4.6 billion years = 4.6 × 1,000,000,000 years = 4,600,000,000 years
525 million years = 525 × 1,000,000 years = 525,000,000 years
these values, we get:
Number of shifts = 4,600,000,000 years / 525,000,000 years per shift
Simplifying this expression gives:
Number of shifts = 8.7
The movement of the continents of the Earth with respect to one another is known as continental drift and is a geological process. The mantle layer is topped by a number of massive plates that make up the Earth's crust. The continents shift and move over time as a result of these plates' movement on the Earth's surface. Convection currents in the mantle layer underneath are what move these plates.
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What is the formula for conservation of energy if there is no resistance and no friction?
Answers
Answer:
If there is no friction then energy is conserved. There are two parts in this case, potential energy and kinetic energy. The object starts out with no kinetic energy and potential energy of PE = mgh where m is the mass, g is acceleration due to gravity and h is its initial height above the ground.
Explanation:
Ben, a psychology student, decides to examine masking behaviors, now that more people are vaccinated. He goes to his local grocery store, finds a specific spot to sit, and counts the number of people he sees with masks or without masks across 2 weeks. Ben is most likely conducting a(n) ____________________ study.
Answers
Ben as a psychology student is most likely conducting a behavioral study.
What is psychology?
Psychology can simply be defined as the study of human mind, conscious and unconscious, thoughts and feelings.
In conclusion, Ben as a psychology student is most likely conducting a behavioral study.
Some few branches of psychology are:
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When explaining chemical reactions to a friend, Brianna models a reaction by taking several colors of modeling clay and making a sculpture of a horse. Which type of chemical reaction is Brianna most likely explaining? synthesis decomposition polymerization replacement
Answers
Answer: synthesis
Explanation:
Chemical reaction which Brianna is explaining is synthesis reaction as she is making use of various colors to make a sculpture of horse .
What is chemical reaction?Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.
There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.
There are three types of chemical reactions:
1) inorganic reactions
2)organic reactions
3) biochemical reactions
During chemical reactions atoms are rearranged and changes are accompanied by an energy change as new substances are formed.
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The road runner was being chased and outsmart the coyote. He ran past the road runner an fell straight down off a cliff. He fell with the same acceleration as gravity (9.8). Calculate his displacement if he fell for 4 seconds
Answers
The displacement of the runner after four seconds is 78.4 m.
What is the displacement after 4 seconds?We know that in this case, we are dealing with a case of an object that has a motion under gravity. We are told that the road runner an fell straight down off a cliff. The fact that we have been told that the runner just fell down the cliff means that the initial velocity of the runner would have to be taken in this context as zero since the runner was dropped from a height as shown.
Acceleration of the runner (g) = 9.8 m/s^2
Initial velocity of the runner (u) = 0 m/s
Time take (t) = 4 seconds
We then have;
h = ut + 1/2gt^2
If we then know that the initial velocity of the person is zero, then we have;
h = 1/2gt^2
h = 0.5 * 9.8 * (4)^2
h = 78.4 m
The height is 78.4 m.
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Sun, Earth, Moon Models Lab Quiz
What was the purpose of the experiment?
HELP PLS
Answers
The aim of this study is to develop a Sun-Earth-Moon model that will serve to describe "the real and apparent movements of the Sun-Earth-Moon system and the results of these movements".
A fundamental topic in astronomy, that is difficult To properly understand the why requires three-dimensional thinking and imagination. In this context;
• Students have difficulty understanding basic concepts of astronomy; H.
such as creating seasons, phases of the moon, lunar and solar eclipses that require three-dimensional thinking must be properly understood. So to teach difficult abstract concepts,
• To solve the problem of the lack of materials and tools related to matter.
• To enhance learning retention by engaging students' multiple senses,
• Capturing concepts visually and verbally increases skills. Remember the image of this concept when you meet its verbal equivalent, or reversed. Therefore, to help students remember what they are learning,
• Have students see tools, objects, and events that they cannot see perceive with their five senses,
• Show students tools, objects, and events that they cannot reach
or bring to class,
• Attract attention and arouse interest in a topic, needed a model to grow.
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what is meant by reticlinear propatigation of light?
Answers
Answer:
The property of light going in a straight lines in a homogenous straightforward medium is known as rectilinear engendering of light.
Answer:
the property of light travelling in a straight lines in a homogenous transparent medium
Explanation:
A snowboarder on a slope starts from rest and reaches a speed of 3.9 m/s after 6.3 s.
Answers
(a) The average acceleration of this snowboarder is 0.62 m/s².
(b) The distance travelled by the snowboarder is 12.27.
What is the average acceleration of this snowboarder?The average acceleration of this snowboarder is calculated as follows;
v = u + at
where;
v is the final velocityu is the initial velocitya is the average accelerationt is timev = 0 + at
a = v / t
t = ( 3.9 ) / ( 6.3 )
t = 0.62 m/s²
The distance travelled by the snowboarder is calculated as follows
v² = u² + 2as
where;
v is the final velocity of the snowboarder =3.9 m/su is the initial velocity of the snowboarder = 0a is the average acceleration of the snowboarder s is the distance travelled by the snowboarderv² = 0 + 2as
s = v² / 2a
s = ( 3.9² ) / ( 2 x 0.62)
s = 12.27 m
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a plane wall is 250mm thick and it's wall area is 4.5m^2. if the thermal conductivity is 9.35w/m°c and surface temperature are steady at 150°c and 40°c. calculate the heat flow across the plane wall and the temperature gradient in the flow direction
Answers
The temperature gradient in the flow of direction is 294525 W.
What is Temperature gradient?A temperature gradient is the gradual variance in temperature with distance. The slope of the gradient is consistent within a material. A gradient is established anytime two materials at different temperatures are in physical contact with each other.
Q= T/( L/ KA)
Q= ( 1500 − 450) / 0.15 / 9.35v * 4.35)
= 294525 W
Units of measure of temperature gradients are degrees per unit distance, such as °F per inch or °C per meter.
Many temperature gradients exist naturally, while others are created. The largest temperature gradient on Earth is the Earth itself. Q= T/Ka.
Therefore, The temperature gradient in the flow of direction is 294525 W.
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In the diagram, q₁ = -4.60 x 10-6 C,=92 +3.75 x 10-6 C, and q3 = +8.30 x 10-5 C.Find the magnitude of the net force on 93.91920.283 m45.0°0.200 m0.200 m93(Make sure you know the direction of each force!)magnitude (N)
Answers
Given:
• q1 = -4.60 x 10⁻⁶ C.
,• q2 = +3.75 x 10⁻⁶ C.
,• q3 = +8.30 x 10⁻⁵ C.
,• d12 = 0.283 m
,• d23 = 0.200 m
,• d13 = 0.200
Let's find the magnitude of the net force on q3.
Let's first find the force acting on q1 and q3:
\(\begin{gathered} F_{13}=\frac{kq_1q_2}{(d_{13})^2} \\ \\ F_{13}=\frac{9\times10^9*4.60\operatorname{\times}10^{-6}*8.30\operatorname{\times}10^{-5}}{0.200^2} \\ \\ F_{13}=85.9\text{ N} \end{gathered}\)Also, for the force acting on q2 and q3, we have:
\(\begin{gathered} F_{23}=\frac{kq_2q_3}{(d_{23})^2} \\ \\ F_{23}=\frac{9\times10^9*3.75\operatorname{\times}10^{-6}*8.30\operatorname{\times}10^{-5}}{0.200^2} \\ \\ F_{23}=70.03\text{ N} \end{gathered}\)Therefore, the magnitude of the net force on q3 will be:
\(\begin{gathered} F_{net}=\sqrt{(F_{13})^2+(F_{23})^2} \\ \\ F_{net}=\sqrt{85.9^2+70.3^2} \\ \\ F_{net}=\sqrt{7379.6+4904.4} \\ \\ F_{net}=110.99\approx111\text{ N} \end{gathered}\)Therefore, the magnitude of the net force on q3 is 111 N.
• ANSWER:
111 N
A force of 64 N gives an object an acceleration of 23.53 m/s^2. What is the mass of the object?
A-2.00 kg
B-1505 kg
C-2.72 kg
D-736 kg
Answers
What are the limitations of sending information using electronic waves
Answers
Answer:
The limitations of sending information using electromagnetic waves is that when the electromagnetic waves move outward in all directions, wave transmitters need to be focused to transmit their signals to a single specified location.
A westward-moving car increases its speed from 10.0 m/s
to 20.0 m/s in 2.0 seconds.
Answers
Answer:
It is accelerating.
The acceleration of the car increases its speed from 10.0 m / s to 20.0 m / s in 2.0 seconds is 5 m / s².
What is acceleration?The speed and direction variations in velocity over time are referred to as acceleration. When anything or some points are moving forward in a straight line, they are said to be accelerating. Despite the fact that the speed is constant, velocity on a circle increases due to the constant direction shift.
For all other motions, the acceleration is increased by both effects. Given that it has both a magnitude and a direction, acceleration is a vector quantity. Velocity is a vector quantity as well.
Given:
The speed of the car, u = 10 m / s,
The final speed of car, v = 20 m / s,
The time, t = 2 sec,
Calculate the acceleration by the following formula,
Acceleration = \((v-u )/t\)
Acceleration = (20 - 10) / 2
Acceleration = 10/2
Acceleration = 5 m / s²
Therefore, the acceleration of the car increases its speed from 10.0 m / s to 20.0 m / s in 2.0 seconds is 5 m / s².
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The complete question is:
A westward-moving car increases its speed from 10.0 m/s
to 20.0 m/s in 2.0 seconds. Find its acceleration?
An object of mass M is at rest at the origin at time t = 0 . At that time, a force F = A(t^2) (where A is a positive constant and F is in newtons when t is in seconds) is applied to the object. After 2 s, the velocity of the object in m/s will be
Answers
At that time, a force F = A(t²), after 2 s, the velocity of the object in m/s will be 8 (A/M) m/sec.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Let a be acceleration of mass M
By Newton 2nd Las, Force = mass * acceleration
F = A (t²) = M * a
a = A (t²) / M
By kinematics, final velocity = initial velocity + acceleration * time
Mass is at rest at t = 0 so initial velocity
So velocity after 2 s is
= 0 + A (2²) / M * 2
= 8 (A / M) m/sec
At that time, a force F = A (t²), after 2 s, the velocity of the object in m/s will be 8 A/M m/sec.
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The velocity of the object after 2 seconds will be the result of integrating the acceleration in time. The acceleration of the object is the second derivative of position, which is the first derivative of velocity. Therefore, we can calculate the velocity of the object at any time t from the formula:
velocity = integral(acceleration)
The acceleration in this case is the force F divided by the mass M, or A(t^2)/M. Therefore, *the speed of the object after 2 seconds would be:
velocity = integral(A(t^2)/M)= (A/M) * integral(t^2)= (A/M) * (t^3/3) + CWhere C is a constant of integration. Since the object was at rest at time t=0, its velocity will also be zero at that moment. Therefore, we can set C=0 and calculate the velocity of the object after 2 seconds:
velocity = (Y/M) * (2^3/3)= (Y/M) * (8/3)= (8/3) * A/M m/sAfter 2 s, the speed of the object in m/s will be 8 (A/M) m/s.A double-pane glass window is 60.0 cm x 90.0 cm and has 3.00-mm window panes. If the temperature difference between inside and outside is 24.0 K, how far apart should the panes be to have a heat loss of 4.09 W? Assume there is air in the gap.
Answers
The distance between the glass to have the given heat loss is 2.54 m.
The given parameters:
dimension of the window, = 60 cm by 90 cmtemperature, T = 24 Kheat lost, Q = 4.09 Wthermal conductivity of glass, k = 0.8 W/mKThe area of the glass window is calculated as follows;
\(A = 0.6 \times 0.9\\\\A = 0.54 \ m^2\)
The distance between the glass is calculated as follows;
\(Q = \frac{KA \Delta T}{\Delta x} \\\\\Delta x = \frac{kA \Delta T}{Q} \\\\\Delta x = \frac{0.8 \times 0.54 \times 24 }{4.09} \\\\\Delta x = 2.54 \ m\)
Thus, the distance between the glass to have the given heat loss is 2.54 m.
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I'm getting conflicting information on brainly about this question. It's either fly-by or GPS satellites...
What constitute the most common way that images of space are captured?
A. Fly-by missions
B. Drones landing on planets
C. GPS satellites in Earth's orbit
D. Astronauts visiting the
international space center
Answers
Answer:
C
Explanation:
GPS satellites in Earth's orbit constitute the most common way that images of space are captured.
I hope this helps! And this is the real answer.
When one ton of TNT is exploded, approximately 4.5 x 10^9 J is released. How much mass would this represent according to the relativistic equivalence of mass and energy?
Answers
Given data
*The given energy released is E = 4.5 × 10^9 J
*The value of the speed of the light is c = 3.0 × 10^8 m/s
The formula for the mass is calculated according to the relativistic equivalence of mass and energy
\(E=mc^2\)Substitute the known values in the above expression as
\(\begin{gathered} 4.5\times10^9=m(3.0\times10^8)^2 \\ m=5.0\times10^{-8}\text{ kg} \end{gathered}\)Hence, the mass is m = 5.0 × 10^-8 kg
If a student were to measure the ball's speed at each position above, at which position would
the ball be traveling the fastest?
A
B
C
D
Answers
The image only shows the path of the ball and its different positions at different times during the flight.
To determine the speed of the ball at each position, additional information such as the time elapsed between each position and the distance traveled would be needed. Only with this information would it be possible to calculate the speed at each position and determine where the ball is traveling the fastest.
Speed is the measure of the distance traveled by an object over a specified period. It is a scalar quantity and is typically expressed in units of distance per unit of time, such as miles per hour, kilometers per hour, or meters per second. Speed can be calculated as the ratio of the distance covered by an object to the time taken to cover that distance. It is an important concept in physics and plays a critical role in determining the motion of objects, particularly in the field of mechanics.
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Frequency= Wavelength = 502 km Speed= 100 m/s
Answers
Answer:
Explanation:
Wavelength = 100m. Speed = V. 2.) Frequency = 20 Hz. Wavelength = 200 m. Speed = ... 2=1.7m. F=Y/2 f=2×10. 5.) Wavelength = 502 km. Speed= 100 m/s.
Describe the setup of the electromagnet. Why does the wire need to be a conductive material?
Answers
An electromagnet consists of a conductive wire wrapped around a magnetic core, creating a magnetic field when an electrical current is passed through it.
An electromagnet is a type of magnet that is created by running an electrical current through a wire. The setup of an electromagnet involves a few basic components. First, there must be a wire that is conductive, meaning that it can conduct electricity. This wire is usually wrapped around a core, which is often made of iron, steel, or another magnetic material. When an electrical current is run through the wire, it creates a magnetic field around the wire. This magnetic field then magnetizes the core, creating an even stronger magnetic field. The strength of the electromagnet can be controlled by adjusting the amount of current that is run through the wire. The wire must be a conductive material because it needs to be able to carry the electrical current that creates the magnetic field. If the wire were not conductive, then the electrical current would not be able to flow through it, and the magnetic field would not be created. In summary, the setup of an electromagnet involves a conductive wire wrapped around a magnetic core, which is magnetized by the electrical current running through the wire. The wire must be conductive to carry the electrical current and create the magnetic field.For more questions on electromagnet
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*According to Bohr's Theory, what is the maximum number of electron orbital layers?*
Answers
Four are known: s, p, d, and f.
Thank you,
Eddie
A crane is oriented so that the end of the 25-m boom AO lies in the yz plane. At the instant shown, the tension in cable AB is 5.9 kN Determine the moment about each of the coordinate axes of the force exerted on A by cable AB.
Previous question
Answers
0Nm, 147.5 Nm and -147.5Nm are the moment about each of the coordinate axes of the force exerted on A by cable AB.
What is moment?A moment is indeed a mathematical term used in physics that involves the combination of a physical quantity and a distance. Seconds relate to physical quantities that are dispersed from either the reference point and are often described with regard to something like a fixed reference point.
The instant therefore explains the position or arrangement of the amount. For instance, the moment of force, also known as torque, is the result of the force acting on an object and the item's distance first from reference point.
Moment = force ×distance
M = f × d
Moment about the x axis:
M = 5.9 ×0
M = 0Nm
Moment about the y axis:
M =5.9 ×25 = 147.5 Nm
Moment about the z axis:
M = 5.9 × (-25)
M = -147.5Nm
Therefore, 0Nm, 147.5 Nm and -147.5Nm are the moment about each of the coordinate axes of the force exerted on A by cable AB.
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What happens to the temperature of a substance while it is changing state?
Answers
Answer:
its temperature stays constant
Explanation:
A person walks on a traveling train. The person is walking at a speed of 0.5 m/s in the southward direction with respect to the earth. The train is traveling at a speed of 1.5 m/s in the northward direction with respect to the earth. What is the velocity of the person with respect to the train
Answers
Answer:
2 m/s
Explanation:
It is given that,
The velocity of a person is 0.5 m/s in the southward direction with respect to the earth.
The velocity of the train is 1.5 m/s in the northward direction with respect to the earth.
We need to find the velocity of the person with respect to the train. Let it is v.
When two objects are moving in the opposite direction, the relative velocity is equal to the sum of velocities.
Velocity of the person with respect to the train = 0.5 m/s + 1.5 m/s
= 2 m/s
Hence, the velocity of the person with respect to the train is 2 m/s.
What is an example of total internal reflection at work?
A.
A ray of light has the same intensity both entering and exiting a fiber optic cable.
B.
A ray of light entering a glass cube gets refracted.
C.
A ray of light in air hits a shiny surface and bounces off.
D.
A ray of light entering a ruby gets refracted.
Answers
\(\huge\underline{\underline{\boxed{{ \mathbb{SOLUTION:}}}}}\)
\(\leadsto\) Total internal reflection occurs when a ray of light is traveling through a medium and, when that medium changes, it does not refract into the second medium but instead it reflects back into the first medium.
By Snell's law, we know that
\(\longrightarrow \sf{n_1 sin \emptyset_1 = n_2 sin \emptyset_2}\)
If this happens, then \(\sf{n_2 \angle n_1}\), and the ray does not lose intensity due to refraction.
\(\huge\underline{\underline{\boxed{\mathbb{ANSWER:}}}}\)
\(\large \bm{ A.}\) A ray of light has the same intensity both entering and exiting a fiber optic cable.
How can you tell how objects differ in density?
Answers
Answer:
You have to compare the densities,
Explanation:
To find density:
1. Measure the object's weight
2. Divide the mass by the volume