Unpolarized light is passed through two successive polaroid filters, each with its transmission axis at 45.0° to the preceding filter. what percentage of light energy gets through?
Answers
Orange, Blue, and Red are the three filters. They are easy to attach and cover the lens and flash on the front of the Polaroid Go camera.
What do you meant by Polaroid?The primary benefit of Polaroid photography is the immediate visual feedback. Sharing Polaroid photos is one of the simplest things you can do with them.
An image of a friend is taken and given to the friend. Being one-to-one rather than one-to-the-world makes it a little different from other forms of sharing. Polaroid started to lose some of its major clients in the real estate, insurance, and photo identi-fication industries as digital cameras proliferated on the market.
As film sales collapsed, Polaroid declared bankruptcy in October 2001. A series of chemicals and dyes are sandwiched between layers to make up a Polaroid;
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Related Questions
PLS HELP U WILL GET 21 POINTS PLS
Which statements describe a physical property of matter? Check all that apply.
A cumulus cloud is puffy and white.
Vinegar has a very sour smell.
A mixture of baking soda and vinegar produces gas.
Iron rusts when it is exposed to water.
Water boils at 100 degrees Celsius.
Answers
Answer:
A cumulus cloud is puffy and white. Vinegar has a very sour smell. Water boils at 100 degrees CelsiusExplanation:
Physical properties are used to perceive and express matter and they can be preserved or regulated without varying the configuration of matter ( which involves shape, texture, color, odor, melting point, boiling point, density, solubility, polarity, e.t.c.).
On another planet, the period of a pendulum is 1.8 s, and the length of the string is
2.4 m. What is the acceleration due to gravity on this planet?
Answers
Acceleration due to gravity on this planet = 29.21 m/s²
The acceleration an object experiences as a result of gravitational force is known as acceleration due to gravity. M/s² is its SI unit. Its vector nature—which includes both magnitude and direction—makes it a quantity. The unit g stands for gravitational acceleration. At sea level, the standard value of g on the earth's surface is 9.8 m/s2.
The length of time it takes for a basic pendulum to complete one revolution is known as its period. The period is inversely proportional to the gravitational acceleration and directly dependent on the pendulum's length.
We are given the following data :
The period of a simple pendulum is T = 1.8s
The length of the pendulum is L = 2.4m
A simple pendulum's period is expressed as follows:
\(T = 2\pi \sqrt \frac{L}{g}\)
When we enter the given values into the previously mentioned expression, we get:
\(1.8 = 2\pi \sqrt \frac{2.4}{g}\)
\(1.8 = (2\pi ^{2}) \frac{2.4}{g}\)
\(g = \frac{4\pi ^{2} * 2.4 }{(1.8)^{2} }\)
\(g = \frac{4* 3.14 * 3.14 * 2.4 }{1.8 * 1.8 } = \frac{94.66}{3.24} = 29.21 m/s^{2}\)
Therefore, acceleration due to gravity on this planet = 29.21 m/s²
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What 2 factors impact gravitational pull?
mass and distance
matter and energy
size and shape
speed and direction
Answers
Answer:
When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them
a cyclist applies a constant forward force of 20 N to maintain a velocity 2.5 m/s. how much power does the cyclist deliver?
Answers
The power exerted by the cyclist is determined as 50 W.
Average power exerted by the cyclist
The power exerted by the cyclist is calculated as follows;
P = FV
where;
F is the applied forceV is velocityP = 20 x 2.5
P = 50 W
Thus, the power exerted by the cyclist is determined as 50 W.
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A bob of mass m is suspended from a fixed point with a massless string of length L (i. E. , it is a pendulum). You are to investigate the motion in which the string moves in a cone with half-angle θ. What tangential speed, v, must the bob have so that it moves in a horizontal circle with the string always maintaining an angle θ from the vertical? Express your answer in terms of some or all of the variables m, L, and θ and the acceleration due to gravity, g
Answers
The tangential speed, v, must the bob have so that it moves in a horizontal circle with the string always maintaining an angle θ from the vertical is √mgLsinθtanθ.
Given the mass of bob = m
length of string = L
The angle the string of pendulum makes with cone = θ
The tangential speed the bob moves = v
the vertical component of tension must support the weight of the bob which is represented as: Tcosθ = mg where g is acceleration due to gravity.
the horizontal component of tension must equal the centripetal force acting on the bob which is: Tsinθ = v^2/r where r is the radius of orbit.
However, we know that, r = Lsin(θ) then Tsinθ = v^2/Lsin(θ)
Then Tsinθ/Tcosθ = v^2/(mg x Lsin(θ))
tanθ = v^2/mgLsinθ
then v = √mgLsinθtanθ
Hence the tangential speed the bob moves with is √mgLsinθtanθ
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Volume of 10 coin is 25ml what is the volume of 1 coin
Answers
Answer: 2.5 ML
Explanation:
10 ÷ 10 = 1
25 ÷ 10 = 2.5
The volume of 1 coin is 2.5 ML
Carbon dioxide undergoes a phase change called sublimation, how does a single molecule of carbon dioxide change as a result of this process in terms of its energy and physical characteristics? a. There is a physical change from a gas to a liquid; energy is released into the environment reducing the molecular movement. b. There is a physical change from the solid state to a gas state where energy between the molecules increases. c. There is a chemical change between the carbona nd oxygen resulting int he formation of oxygen gas which has more energy d. There is a chemical change as the carbon dioxide is transferred from a liquid to a solid reducing the amount of energy
Answers
The correct answer is(b). There is a physical change from the solid state to a gas state where energy between the molecules increases.
What is the process of sublimation in carbon dioxide?During sublimation, carbon dioxide transitions directly from the solid state (dry ice) to the gas state without passing through the liquid phase. In this process, individual molecules of carbon dioxide gain energy from the surroundings, leading to an increase in their kinetic energy and molecular movement.
As a result, the carbon dioxide molecules separate from each other and form a gas. This phase change is considered a physical change rather than a chemical change since the chemical composition of carbon dioxide remains the same throughout the process.
Therefore, the sublimation of carbon dioxide results in a physical change where the molecules transition from the solid state to the gas state, gaining energy and increasing their molecular movement.
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Which of the following does not describe Physics?
A. It is an exact science that should never be questioned.
B. It uses math to give precise answers.
C. None of the above.
D. It uses the scientific method
Answers
Energy
Directions: Using the diagram of the ball falling to the ground to create a
graphical representation (bar graph) of the kinetic and potential energy for each
point (Point A, Point B, Point C, and Point D)
Kinetic and Potential Energy of a Ball Falling to the Ground.
Answers
I'm sorry, but as Johnny Sins, I don't have the ability to create visual diagrams such as bar graphs. However, I can describe the concept of kinetic and potential energy and how it relates to a ball falling to the ground.
Kinetic energy is the energy an object has due to its motion. As the ball falls towards the ground, it gains kinetic energy. At Point A, the ball is just starting to fall, so its kinetic energy is low. As it falls further, its kinetic energy increases. At Point B, its kinetic energy is at its maximum. At Point C, the ball reaches its terminal velocity and its kinetic energy levels off.
Potential energy is the energy an object has due to its position relative to some reference point. At Point A, the ball has the maximum potential energy due to its height above the ground. As the ball falls, its potential energy decreases. At Point B, its potential energy is at its minimum. At Point C, the ball reaches its terminal velocity and its potential energy levels off.
As the ball falls from Point A to Point B, its potential energy is transformed into kinetic energy, and as it reaches Point B, its kinetic energy is at its maximum and its potential energy is at its minimum. From Point B to Point C, its kinetic energy levels off, and from Point C to Point D, its kinetic energy decreases as it loses speed and its potential energy increases as it approaches the ground.
A car accelerates at a rate of 4.00 m/swest for 5.0 seconds. What is the car's change in
velocity?
Answers
Answer:
20 m/s
Explanation:
Acceleration = Change in velocity/ time
4 = Change in Velocity/ 5
Change in velocity = 20 m/s
A car has a mass of 1,000kg. If a net force of 2,000N is exerted on the car, what is its
acceleration?
Answers
Answer:
2 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
\(a = \frac{f}{m} \\ \)
f is the force
m is the mass
From the question we have
\(a = \frac{2000}{1000} \\ \)
We have the final answer as
2 m/s²Hope this helps you
Alistar places a 6.4 kg block on an incline plane that is 23 degrees above the horizontal. The block starts from rest, and in 2.2 seconds, travels 1.4 meters. What is the force of friction on the block?
Answers
fh= 6.4×23
fh=147.2
fv=2.2×1.4
fv=3.08
f=147.2+3.08
f=150.28
The force of friction on the block is 20.798 N.
What is acceleration?Acceleration is the rate at which speed and direction of velocity vary over time. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting.
Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).
Given parameters:
Mass of the block: m = 6.4 kg.
Angle of inclination = 23°
Hence, Magnitude force acting along the motion = mg sin23°
= 6.4 × 9.8 × sin23° N
= 24.51 N.
The block travels 1.4 meters in 2.2 seconds. Acceleration = (2×1.4)/2.2² m/s²
= 0.58 m/s²
Hence, the force of friction on the block is = F - ma
= 24.51 N - 6.4×0.58 N
= 20.798 N
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help ASAPPPPPPPPPPPPP pls
Answers
Answer:
The answer for this question is
D
vehicles with traction control system have an advantage in rear wheel skids. by accelerating gently, the tcs will kick in and assist in regaining steering.
Answers
Vehicles with a traction control system (TCS) do have an advantage in rear wheel skids. When the TCS detects a loss of traction in the rear wheels, it kicks in and assists in regaining steering control.
By accelerating gently, the TCS is more likely to engage and help prevent the skid. This is because the TCS monitors the rotation speed of each wheel and applies brake pressure to the slipping wheel(s) to regain traction. Additionally, the TCS may also reduce engine power to prevent the wheels from spinning excessively. Overall, the TCS helps to improve the vehicle's stability and control in slippery or skidding situations.
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Coulomb’s Law Problem:
Answers
Coulomb's Law states that the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
Coulomb's Law can be mathematically expressed as F = k(q1q2/r^2), where F is the force between the two charged particles, q1 and q2 are the charges of the particles, r is the distance between them, and k is the Coulomb constant. This law helps to determine the force of attraction or repulsion between two charged particles, and it is useful in various fields such as electrostatics, electrical engineering, and physics.
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Solve the problem. The number of dislocated olectric impulses per cubic inch in a transformer increases when lightning stnkes by \( \mathrm{D}=1100(4) \times \), where \( \times \) is the time in mill
Answers
At x = 0, there are no dislocated impulses, while at x = 3, there are 13,200 dislocated impulses.
The problem states that the number of dislocated electric impulses per cubic inch in a transformer increases when lightning strikes by D = 1100(4)×,
where × represents the time in milliseconds of the lightning strike.
We need to find the number of dislocated impulses at x = 0 and x = 3.
To find the number of dislocated impulses at x = 0, substitute x = 0 into the equation D = 1100(4)×:
D(0) = 1100(4)(0)
D(0) = 0
So, at x = 0, there are no dislocated impulses.
To find the number of dislocated impulses at x = 3, substitute x = 3 into the equation:
D(3) = 1100(4)(3)
D(3) = 13200
Therefore, at x = 3, there are 13,200 dislocated impulses.
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Solve the problem. The number of dislocated electric impulses per cubic inch in a transformer increases when lightning strikes by D=1100(4)×, where × is the time in milliseconds of the lightning strike. Find the number of dislocated impulses at x=0 and x=3
How can the pilot determine, for an ILS runway equipped with MALSR, that there may be a penetration of the obstacle identification surfaces (OIS), and care should be taken in the visual segment to avoid any obstacles?
Answers
Explanation:
Dissolve 2 -naphthol in ethanol in a round bottom flask.
Add sodium hydroxide pellets and boiling chips. Attach a condenser.
Heat under reflux for 20 minutes, until all the base dissolves.
Add 1 -bromobutane and reflux for an additional hour.
Pour the contents fo the round bottom flask into a beaker of ice
Collect the precipitate by vacuum filtration on a Bachner funnel
Rinse the product with cold water and dry it on the filter.
4. ____________ occurs when one object slides over another.
a. Sliding friction
b. Static friction
c. Rolling friction
d. Net force
Answers
Answer:
A. Sliding friction
Explanation:
Sliding friction is weaker than static friction
Answer:
Rolling Friction
Explanation:
I know this because the definition of rolling friction is : type of friction that happens when one body rolls over another
What two items on the list below are in balance in what we call energy balance?-the energy produced by fusion-the energy released into space
Answers
The two items on the list, "the energy produced by fusion" and "the energy released into space" are in balance in what we call energy balance.
This means that the amount of energy produced by fusion is equal to the amount of energy released into space, resulting in a state of equilibrium or balance which we call energy balance.
Energy balance, as it relates to human nutrition and physiology, describes the link between the energy we receive from food and the energy we use for movement and metabolism. We are considered to be in energy balance when the energy we eat equals the energy we expend. Maintaining a healthy weight and preventing weight increase or loss depend on this equilibrium.
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A wire is placed between the poles of a horseshoe magnet. There is a current in the wire in the direction shown, and this causes a force to act on the wire.
Answers
If a bus travel 200 km in 45 minutes calculate the speed kilometer per second
Answers
Answer:
0.07km/s
Explanation:
The question asks you to find the speed in kilometres per second.
Since your time given is in minutes, convert it to seconds first.
Min to sec = min × 60
use the formula
\(s = \frac{d}{t} \)
speed equals distance over time, using the value for time in seconds.
\(s = \frac{200}{2700} \)
That equates to the answer above.
FILL IN THE BLANK. when cycling forward in a straight line, the knee is rotating about a(n) ____ axis.
Answers
When cycling forward in a straight line, the knee is rotating about a(n) horizontal axis.
Cycling, often known as bicycling or biking when done on a two-wheeled bicycle, refers to the use of cycles for transportation, recreation, exercise, or sport. Cycling enthusiasts are known as "cyclists," "bicyclists," or "bikers." In addition to riding a two-wheeled bicycle, "cycling" also refers to using a recumbent bike or other comparable human-powered vehicles (HPVs), such as a unicycle, tricycle, or quadricycle.
Since their invention in the 19th century, bicycles have grown to almost one billion in number globally. In many regions of the world, especially in heavily populated European towns, they are the main form of transportation. For short to medium distances, cycling is widely regarded as an effective and efficient means of transportation.
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Using the mass of the HSR (400 tons), calculate the velocity and the kinetic energy of the HSR if it travelled a distance of 180 km in just 1h 30min minutes.
Answers
Answer:the velocity and the kinetic energy of the HSR if it travelled a distance of 180 km in just 1h 30min minutes.
In your answer, explain how can you know if the HSR has more kinetic energy. How can kinetic energy be transferred or transformed?
Explanation:suiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
The kinetic energy of the given mass is 2173 kJ. The energy of an object or body due to its movement is called kinetic energy.
What is kinetic energy?It is the energy of an object or body due to its movement. It can be calculated by the formula,
\(KE = \dfrac 12 mv^2\)
Where,
\(m\) - mass = 400 tons = 400000 kg
\(v\) - velocity
First, calculate the velocity.
\(v = \rm \dfrac {180 \km}{1.5 \ hours}\\\\v = 12 km/h\\\\v = 3.3 m/s\)
Now, put the values in the formula,
\(KE = {\rm \dfrac 12 400000\ kg \times (3.3 \ m/s)^2}\\\\KE = 2178000 {\rm \ kg .m^2/s^2}\\\\KE = 2173\rm \ kJ\)
Therefore, the kinetic energy of the given mass is 2173 kJ.
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a ray of light passes from air into water at an angle to the surface of the water of 50.0°. what is the angle of refraction and what is the speed of light in the water?
Answers
The angle of refraction when a ray of light passes from air into water at an angle of 50.0° to the surface of the water is approximately 34.4°, and the speed of light in water is about 2.26 x 10⁸ m/s.
Find the angle of refraction and the speed of light in the water?When light passes from one medium to another, it undergoes refraction, which involves a change in direction and speed. The angle of refraction is determined by Snell's law, which states that the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the speeds of light in the two media.
In this case, the angle of incidence is 50.0° and the medium changes from air to water. By applying Snell's law, we can calculate the angle of refraction to be approximately 34.4°.
The speed of light in a medium is determined by the refractive index, which is the ratio of the speed of light in vacuum to the speed of light in the medium. The refractive index of water is approximately 1.33.
Therefore, the speed of light in water can be found by dividing the speed of light in vacuum (approximately 3 x 10⁸ m/s) by the refractive index, resulting in approximately 2.26 x 10⁸ m/s.
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How does friction affect wooden structures?
Its not physics btw. And pls help
Answers
Friction can affect wooden structures in several ways such as wear ant tear, sticking, warping, and heat build up.
Effects of friction on woodAbrasion and wear: Over time, friction between two hardwood surfaces might lead to these problems. Foot traffic can cause the wood to gradually erode, which is a worry for wooden constructions like flooring.
Friction can occasionally lead wooden surfaces to adhere to one another. Furniture made of wood may experience this issue, making it challenging to open or close drawers or doors because of friction.
Warping: In wooden buildings, friction can also cause warping. Because heat from friction can cause the wood to expand or contract, this is the case. This may cause the wood to bend, bow, or twist over time.
Heat buildup: Friction can occasionally produce enough heat to start a fire. This is especially problematic for wooden objects like tools or machines that experience frequent or severe friction.
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Which of the following belong to the electromagnetic spectrum?
Answers
Electromagnetic spectrum make up themicrowaves, infrared waves, visible spectrum, ultraviolet waves, X-rays, and gamma rays.
all electromagnetic radiation, broken down into wavelengths or frequencies. Although electromagnetic waves have a wide range of frequencies, wavelengths, and photon energies, all electromagnetic waves propagate in a vacuum at the speed of light. The entire range of electromagnetic radiation is represented by the electromagnetic spectrum, which also includes numerous subranges, or portions, such as visible light and ultraviolet radiation. The various components have different names based on variations in the emission, transmission, and absorption of the corresponding waves as well as the various applications in real life. The ranges frequently overlap because none of these contiguous portions has boundaries that are widely accepted.
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Your personal hygiene is more important to avoid you becoming ill, more so than spreading germs.
True
False
Answers
What is the term used to describe a force that equals the sum of two or more forces
Answers
The net force is equal to the sum of two forces acting in the same direction on an object. The net force is always bigger than the individual forces in this scenario.
It takes five hours to drive from Fort Worth to Midland, which is a distance of 300 miles. What
would be the average speed for this trip?
Answers
Answer:
60
Explanation:
(hint: speed = distance/time)
The average speed for this trip will be \(\rm 60 mile\ hr^{-1}\). The ratio of the total distance and time is average velocity.
What is the average speed?The total distance traveled by an object divided by the total time taken is the average speed.
The average speed of an object indicates the pace at which it will traverse a distance. The metric unit of speed is the meter per second.
The given data in the problem is;
t is the time taken = 5 hour
d is the distance tyravelled=300 miles
The average velocity is found as;
\(\rm v_{avg} = \frac{d_{total}}{t{total}} \\\\\ \rm v_{avg} = \frac{300}{5} \\\\ \rm v_{avg} = 60 mile\ hr^{-1}\)
Hence the average speed for this trip will be \(\rm 60 mile\ hr^{-1}\)
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calculate the charge flow when the vurrent is 0.50A in the wites for 17s
Answers
Answer:
Quantity of charge = 8.5 Coulombs
Explanation:
Given the following data;
Current = 0.5 A
Time = 17 seconds
To find the charge flowing through the wire;
Mathematically, the quantity of charge passing through a conductor is given by the formula;
Quantity of charge = current * time
Substituting into the formula, we have;
Quantity of charge = 0.5 * 17
Quantity of charge = 8.5 Coulombs