a beam of monochromatic light with a wavelength of 580 nm in air travels into water. what is the wavelength of the light in water? give your answer in nanometers
The wavelength of the light which travels from air to water is 436.09 nm
The wavelength of the light in air = 580 nm
The light travels from air to water is
μ = 4/3
The formula to find the wavelength of the light in the air can be found using the formula
ν = c/μ
It can be rewritten as
λₙ = λ₀ / μ
where λₙ is the wavelength of light in water
λ₀ is the wavelength of light in water
μ is the relative refractive index
Let us substitute the known values in the above equation, we get
λₙ = 580 x 10⁻⁹ / 1.333
= 436. 09 nm
Therefore, the wavelength of light in water is 436.09 nm
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The filament is broken in a light bulb. The circuit is now
a. open circuited
b. closed circuited
c. neither closed nor open
Answer:
It is A. Open Circuit.
Explanation:
Filament heats up and produces the light. If the filament breaks, the current does not flow and the circuit will be open. The ammeter will reach zero when this happens.
23
You might have noticed that a feather falls slowly toward the ground, while a ball falls rapidly.
Which statement correctly explains the motion of these objects?
A. The ball does not experience fluid friction as it falls
B. Gravity is the only force acting on the feather and the ball
C. The feather experiences more fluid friction than the ball
D. The acceleration of the ball and feather are the same
16.) A person walks 4 meters east, then walks 3 meters north. Determine distance and
displacement.
Answer:
Long question good luck:)
Explanation:
Answer:7
Explanation:
because its the right answer
Equation for solving wavelength
Answer:
The equation for wavelength is λ = v/f
Explanation:
λ is wavelength
v = velocity
f = frequency
when you develop your personal fitness goals it is essential that you
Answer:
fitness is very important to me
After you pick up a spare, your bowling ball rolls without slipping back toward the ball rack with a linear speed of v = 3.08 m/s (Figure 10-24). To reach the rack, the ball rolls up a ramp that rises through a vertical distance of h = 0.53 m. Figure 10-24 (a) What is the linear speed of the ball when it reaches the top of the ramp? m/s (a) If the radius of the ball were increased, would the speed found in part (b) increase, decrease, or stay the same? Explain.
(a) The linear speed of the ball when it reaches the top of the ramp would be less than 3.08 m/s.
(b) If the radius of the ball were increased, the speed found in part (a) would stay the same.
(a) To determine the linear speed of the ball when it reaches the top of the ramp, we can use the principle of conservation of mechanical energy. As the ball rolls up the ramp, it gains potential energy due to the increase in height. This gain in potential energy comes at the expense of its initial linear kinetic energy. Therefore, the ball's linear speed decreases as it reaches the top of the ramp. The exact value of the final linear speed can be calculated using the conservation of energy equation.
When the bowling ball rolls up the ramp, it experiences an increase in potential energy due to the change in height. This increase in potential energy is converted into kinetic energy as the ball reaches the top of the ramp. According to the principle of conservation of energy, the total mechanical energy (sum of kinetic and potential energies) remains constant.
Initially, the ball has both translational kinetic energy (associated with its linear speed) and rotational kinetic energy (associated with its spinning motion). As the ball moves up the ramp, some of its translational kinetic energy is converted into potential energy. At the top of the ramp, all of the ball's translational kinetic energy is converted into potential energy, which is then converted back into translational kinetic energy as the ball rolls down the ramp.
Since the ball loses some of its initial kinetic energy (translational) while gaining potential energy, its linear speed decreases as it reaches the top of the ramp. Therefore, the linear speed of the ball when it reaches the top of the ramp would be less than the initial speed of 3.08 m/s.
(b) The speed found in part (a) would stay the same if the radius of the ball were increased. The linear speed of the ball depends on the initial conditions (such as the initial linear speed and the height of the ramp) and the conservation of mechanical energy. The radius of the ball does not affect the conservation of mechanical energy or the height of the ramp. Therefore, changing the radius of the ball would not alter the final linear speed of the ball when it reaches the top of the ramp.
In conclusion, increasing the radius of the ball would not affect the speed at which it reaches the top of the ramp. The speed would remain the same as determined in part (a) of the question.
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if i raise a 2 kg book 0.8m over my head determine the amount of work that i have done
If you raise a 2 kg book 0.8m over your head, the amount of work that you have done is 15.68 J
F = m g
F = Force
m = Mass
g = Acceleration due to gravity
m = 2 kg
g = 9.8 m / s²
F = 2 * 9.8
F = 19.6 N
W = F d cos θ
W = Work done
d = Distance
θ = Angle between force and displacement vector
d = 0.8 m
θ = 0
W = 19.6 * 0.8
W = 15.68 J
Therefore, the amount of work that you have done is 15.68 J
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Thirteen resistors are connected across points A and B as shown in the figure. If all the resistors are
accurate to 2 significant figures, what is the equivalent resistance between points A and B?
The equivalent resistance between points A and B in the diagram is 22 Ω
How do I determine the equivalent resistance?We shall begin by obtaining the equivalent resistance in parallel (i,e the three 6 Ω resistor). Details below:
Resistor 1 (R₁) = 6 ΩResistor 2 (R₂) = 6 ΩResistor 3 (R₃) = 6 ΩEquivalent resistance (Rₜ) = ?1/Rₜ = 1/R₁ + 1/R₂ + 1/R₃
1/Rₜ = 1/6 + 1/6 + 1/6
1/Rₜ = 3/6
1/Rₜ = 1/2
Rₜ = 2 Ω
Finally, we shall determine the equivalent resistance between A and B (i.e series arrangement). Details below:
Resistor 1 (R₁) = Resistor 2 (R₂) = ... = Resistor (R₁₁) = 2 ΩEquivalent resistance (R) =?R = R₁ + R₂ + R₃ + R₄ + R₅ + R₆ + R₇ + R₈ + R₉ + R₁₀ + R₁₁
R = 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
R = 22Ω
Thus, we can conclude that the equivalent resistance is 22 Ω
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the location of which of the following points within an object might depend on the orientation of the object?
The location of the center of mass within an object might depend on the orientation of the object. The center of mass is the point where the entire mass of the object can be considered to be concentrated. It can change its position within the object as the orientation changes.
This is a bit of a tricky question because the answer is technically "it depends." However, I'll do my best to give you a long answer and provide some examples.
In general, the location of a point within an object should not depend on the orientation of the object. If you have a perfectly symmetrical object, for example, any point within that object should be equidistant from the center regardless of how the object is oriented.
However, there are some cases where the location of a point might depend on the orientation of the object. One example of this is if you have an object that is not symmetrical, and there is a point that is located exactly in the center of the object. If you rotate the object, that point will still be in the center, but its position relative to the rest of the object will change.
Another example is if you have an object with a "front" and a "back." If there is a point on the front of the object that is not mirrored on the back of the object, the location of that point could depend on the orientation of the object. For example, if you have a cube with a circle on one face and no circle on the opposite face, the location of the circle will change depending on which face is facing up.
In summary, while the location of a point within an object should generally not depend on the orientation of the object, there are some cases where it could. These cases usually involve asymmetrical objects or objects with distinct "front" and "back" sides.
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A train is moving along a horizontal track. A pendulum suspended from the roof makes an angle of 4° with the vertical. If g=10m/s2, what is the acceleration of the train?
Answer:
Train accaleration = 0.70 m/s^2
Explanation:
We have a pendulum (presumably simple in nature) in an accelerating train. As the train accelerates, the pendulum is going move in the opposite direction due to inertia. The force which causes this movement has the same accaleration as that of the train. This is the basis for the problem.
Start by setting up a free body diagram of all the forces in play: The gravitational force on the pendulum (mg), the force caused by the pendulum's inertial resistance to the train(F_i), and the resulting force of tension caused by the other two forces (F_r).
Next, set up your sum of forces equations/relationships. Note that the sum of vertical forces (y-direction) balance out and equal 0. While the horizontal forces add up to the total mass of the pendulum times it's accaleration; which, again, equals the train's accaleration.
After doing this, I would isolate the resulting force in the sum of vertical forces, substitute it into the horizontal force equation, and solve for the acceleration. The problem should reduce to show that the acceleration is proportional to the gravity times the tangent of the angle it makes.
I've attached my work, comment with any questions.
Side note: If you take this end result and solve for the angle, you'll see that no matter how fast the train accelerates, the pendulum will never reach a full 90°!
the drag force from air resistance is given by F= pACv2/2. where p is the density of air, A is the cross-sectional area (assume to be a circle), C is the drag coefficient based on shape and v is the speed. You may guess that larger raindrops may have a larger terminal speed, but let's see if this is true. Assume a spherical raindrop of radius r and density p.. I) Derive an expression for the terminal speed of the raindrop in terms of r, C, g. pw and p. (where p, is the density of air that is in the drag force expression). Mass cannot be in your expression. il) From your expression, if you double the radius, what happens to the terminal speed?
The terminal speed of a raindrop is proportional to the square of the radius.
If the radius is doubled, the terminal speed will quadruple.
The terminal speed of a raindrop is the speed at which the drag force from air resistance balances the force of gravity. The drag force is given by F = pACv^2/2, where p is the density of air, A is the cross-sectional area, C is the drag coefficient, and v is the speed.
The cross-sectional area of a spherical raindrop is A = πr^2, where r is the radius of the raindrop.
The force of gravity is given by F = mg, where m is the mass of the raindrop and g is the acceleration due to gravity.
For a raindrop to reach its terminal speed, the drag force must equal the force of gravity. This means that pACv^2/2 = mg.
Solving for v, we get v = (2mg)/(pCπr^2).
The terminal speed is proportional to the square of the radius. This means that if the radius is doubled, the terminal speed will quadruple.
v = (2mg)/(pCπr^2)
If r = 2r, then v = (2mg)/(pCπ(2r)^2) = 4 * (2mg)/(pCπr^2) = 4v
Therefore, the terminal speed will quadruple.
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once a massive star stops fusion, how long does it take for the core to collapse?
Answer:
it takes seconds for the core the collapse
A kettle transfers 6,000j of energy electrically. 1,500j of this is wasted. what is the efficiency of this kettle?
Answer:75 percent
Explanation:so in order tro fin d thge efficiency i used the forumla ,efficency=useful output energy/input energyx100%,in order to use this formula i needed the output,which i found by subtracting the input energy with wasted energy,that gave me the output,and after founding the output,i put that into the formula,
output energy=input energy - wasted energy
output energy=6000j-1500j
output energy=4500
put that into the formula
efficiency =output energy/input enrgy x100%
efficiency=4500/6000 multiplied by 100%
efficiency=0.75x100%
efficiency=75%
Penetration capabilities in...
- Radio Waves
- Microwaves
- Infrared
- Visible light
- Ultraviolet
- X-rays
- Gamma rays
Ultra = X-ray
Explanation:
how are things going to paint the roof for beginners painting and decorating the whole house so I'm going away with a few sports mates for a couple nights for beginners but will have a look painting at a time and see what is going to be Strong enough
why would a hunter choose to use a shotgun with slugs instead of a rifle?
Answer:
There are several reasons why a hunter might choose to use a shotgun with slugs instead of a rifle.
Cost. Shotguns are typically less expensive than rifles.
Accuracy. Slugs are more accurate than buckshot at longer ranges.
Versatility. Shotguns can be used for a variety of hunting applications, including waterfowl, upland game, and big game.
Recoil. Shotguns have less recoil than rifles, making them easier to shoot for extended periods of time.
Penetration. Slugs can penetrate thicker materials than buckshot, making them a better choice for hunting large game.
Of course, there are also some disadvantages to using a shotgun with slugs.
Range. Slugs are not as effective at long ranges as rifle bullets.
Shotgun spread. Shotguns with slugs do not have a spread like shotguns with buckshot. This can make it more difficult to hit a target at close range.
Shotgun choke. The choke on a shotgun can affect the accuracy of slugs. A rifled choke is the best choice for shooting slugs.
Ultimately, the decision of whether to use a shotgun with slugs or a rifle depends on the individual hunter's needs and preferences.
Explanation:
Question number 10
I need the answer with explanation.. Thank you in advance.
If the coil is rotated about its axis which is perpendicular to its plane in counterclockwise direction by a 90° angle, the flux that penetrates the coil (a) increases.
Why does the flux increase?When a circular coil is rotated about its axis which is perpendicular to its plane in counterclockwise direction by a 90° angle, the flux that penetrates the coil changes.
This is because the area of the coil that is perpendicular to the magnetic field increases while the area that is parallel to the magnetic field decreases. Therefore, the flux that penetrates the coil increases.
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which is the process used in fire investigation to determine if and where electrical circuits were energized at the time of the fire?
The process used in fire investigation to determine if and where electrical circuits were energized at the time of the fire is live circuit analysis.
This is a technique in which investigators use specialized equipment to measure the voltage and amperage levels of electrical circuits in the building. Live circuit analysis is conducted once the electrical power supply is re-established on-site for investigating the fire's origin and cause. It involves checking electrical outlets, appliances, and other devices that might have been connected to electrical circuits in the building.
This process is vital for determining whether an electrical fault or malfunction caused the fire and identifying the responsible parties for negligence. In summary, the live circuit analysis is a standard fire investigation procedure that can determine the presence and location of electrical faults that led to a fire. The technique provides insights for experts to reconstruct the origin and causes of the fire to prevent future tragedies.
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528 nm light passes through a single
slit. The second (m = 2) diffraction
minimum occurs at an angle of 3. 48°.
What is the width of the slit?
Given that the wavelength of light, λ = 528 nm and the second diffraction minimum occurs at an angle of θ = 3.48°, then we can find the width of the slit using the diffraction grating formula which is given by;
d sin θ = mλ, Where, d = the width of the slitθ = the angle between the centre line and the nth order maximum, λ = the wavelength of the light m = the order of diffraction d sin θ = mλ.
Rearranging the formula above to obtain the width of the slit; d = mλ/sin θ, Where; d = the width of the slit = ?m = 2λ = 528 nm, θ = 3.48°d = 2 × 528 × 10⁻⁹ m/sin 3.48°= 3.56 × 10⁻⁶ m or 3.56 μm (3 significant figures).
Therefore, the width of the slit is 3.56 μm.
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if it is known that the toggle clamp is a machine, what assumptions can be made about it? check all that apply. (you must provide an answer before moving to the next part.)
A toggle clamp is a tool that you use to firmly secure components or pieces in place, frequently but not always as part of a production process.
What is toggle clamp?A toggle clamp is a device that you employ, often but not exclusively as part of a production process, to firmly place components or parts in place. A toggle clamp's main characteristics are its rapid action and ability to be easily turned on and off by an operator.
Toggle clamps also lock in place firmly. Because of this, toggle clamps are frequently employed in production lines where components need to be held firmly and quickly removed during routine manufacturing procedures.
Toggle clamps come in six primary categories: vertical toggle clamps, horizontal toggle clamps, plunger toggle clamps (also known as push action toggle clamps), hook action toggle clamps, plier action toggle clamps, and cam action toggle clamps.
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1. A 2.08 m tall man stands 1.78 m from a lens with focal length 28.3 cm.
How tall (in m) is his image formed by the lens? Be sure to include the sign to indicate orientation!
2. When laser light of some unknown wavelength hits a diffraction grating with 20 slits per millimeter, it produces bright fringes separated by 27.2 mm on a screen that is 2.41 m away.
Given the pattern formed, what must be the wavelength of the light (in nm)?
1. The height of the image is 0.287 m.
2. The wavelength of the light is 563 nm.
1. The image distance, denoted as `i`, is determined by the lens formula: `1/f = 1/o + 1/i`, where `f` represents the focal length, `o` is the object distance, and `i` represents the image distance. Given `f = 28.3 cm` and `o = 1.78 m`, we need to convert the object distance from meters to centimeters: `o = 1.78 m = 178 cm`. Therefore, the image distance is calculated as follows:
i = (1/f - 1/o)^-1 = (1/28.3 - 1/178)^-1 = 24.53 cm.
The image height, denoted as `h'`, can be determined using the object height `h` and the magnification `m` relationship: `h' = m * h`. The magnification `m` is given by `m = -i/o`, where the negative sign indicates an inverted image. Thus,
m = -i/o = -(24.53 cm)/(178 cm) = -0.138.
The image height `h'` is obtained by multiplying `h` by `m`: `h' = m * h`, where `h = 2.08 m`. Therefore,
h' = (-0.138) * 2.08 = -0.287 m.
The negative sign signifies an inverted image. Hence, the height of the image is determined as `0.287 m`, and it is inverted.
2. Bright fringes are observed at angles `theta` satisfying the condition `d sin theta = m lambda`, where `d` represents the spacing between two slits, `m` is an integer indicating the fringe order, and `lambda` denotes the wavelength of light. In this case, given `d = 1/20 mm` and `m = 1`, the angle `theta` corresponding to the first bright fringe is given by `tan theta = x/L`, where `x` represents the separation between two fringes, and `L` is the distance from the grating to the screen. With `x = 27.2 mm` and `L = 2.41 m`, we can calculate:
tan theta = (27.2 mm)/(2.41 m) = 0.01126.
Therefore, `sin theta = tan theta = 0.01126`.
Consequently, the wavelength `lambda` is determined using the formula `lambda = d sin theta / m`, where `d = 1/20 x 10^-3 m`, `sin theta = 0.01126`, and `m = 1`:
lambda = (1/20 x 10^-3 m) x 0.01126 / 1 = 5.63 x 10^-7 m = 563 nm.
In summary:
1. The height of the image is 0.287 m.
2. The wavelength of the light is 563 nm.
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X-ray technicians wear protective gear to keep them safe from the X-rays. Why are X-rays dangerous?
They have long wavelengths that can penetrate materials, and their low energy can damage matter.
They have short wavelengths that can penetrate materials, and their low energy can damage matter.
They have long wavelengths that can penetrate materials, and their high energy can damage matter.
They have short wavelengths that can penetrate materials, and their high energy can damage matter.
Answer:
They have short wavelengths and high energy
E = h ν = h c / λ
Answer: They have short wavelengths that can penetrates materials, and their high energy can damage matter
Explanation:
The shorter the wavelength - the more the energy it contains, so you can immediately eliminate option 2 as short wavelengths AND low energy does not make sense
The shorter the wavelength - the more easily it can penetrate objects, so you can eliminate options 1 and 3 as well
This leaves only option 4 as a reasonable answer
J. J. Thomson used a cathode-ray tube to calculate the charge-to-mass ratio of the electron. Which of these suggested the presence of a negative particle?.
J. J. Thomson used a cathode-ray tube to calculate the charge-to-mass ratio of the electron. The deflection of cathode rays towards the positively charged surface proved that they are negatively charged particles.
In 1897, J.J Thomson performed a cathode ray tube experiment to determine the charge-to-mass ratio of electrons.
Due to high flow of voltage, a beam of particles was allowed to flow from the negatively charged end to the positively charged end of the tube.
An end of the tube was painted with phosphorous and when electrons struck that end, a green spark was observed which confirmed the presence of negatively charged particles i.e. electrons.
To put it simply, cathode rays came from the cathode tube and deflected towards a positively charged plate showing that they are negatively charged particles.
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Part H
Part complete
At approximately what times does the person change direction?
Select all that apply.
Based on the position vs time graph provided, the person changes direction at approximately 2.0 s and 6.0 s. Option b and d are correct choices.
The position vs time graph of an object moving back and forth can provide valuable information about its velocity and direction of motion. The slope of the position vs time graph gives us the velocity of the object. When the object is at rest, the position vs time graph is a horizontal line.
When the object is moving away from the origin, the position vs time graph has a positive slope, and when the object is moving towards the origin, the position vs time graph has a negative slope. The points where the slope changes from positive to negative, or vice versa, correspond to the times when the object changes direction.
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--The complete question is, First, you will focus on the relationship between velocity and position. Recall that velocity is the rate of change of position. This means that the velocity is equal to the slope of the Position vs. Time graph.
Move the person to the position x=−6mx=−6m or enter –6.00 in the position box. If you dragged the person to position, click the Pause button and then the Clear button. Next, drag the person to the right to roughly x=6mx=6m and reverse his direction, returning him to the original position, at x=−6mx=−6m. Move the person relatively quickly, about a few seconds for the round trip. Your plots should look something like those shown below.
At approximately what times does the person change direction?
Select all that apply.
a. 3.2 s
b. 2.0 s
c. 7.8 s
d. 6.0 s
e. 1.0 s
f. 4.0 s--
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= < 1. A uniform surface current flowing in the xy plane, described by surface current K = Kî generates a magnetic field MoK -î for z> 0 2 В. MOK -î for z < 0 2 a) Is it possible to find a magneti
The question is asking whether it is possible to find a magnetic vector potential for a given uniform surface current flowing in the xy plane and generating a magnetic field for different regions of space.
To determine whether it is possible to find a magnetic vector potential for the given scenario, we need to consider the conditions that must be satisfied. In general, a magnetic vector potential A can be found if the magnetic field B satisfies the condition ∇ × A = B. This is known as the magnetic vector potential equation.
In the given situation, the magnetic field is different for the regions above and below the xy plane. For z > 0, the magnetic field is described as B = MoK -î, and for z < 0, it is described as B = -MoK -î. To find the magnetic vector potential, we need to determine if there exists a vector potential A that satisfies the equation ∇ × A = B in each region.
By calculating the curl of A, we can check if it matches the given magnetic field expressions. If the curl of A matches the magnetic field expressions for both regions, then it is possible to find a magnetic vector potential for the given scenario. However, if the curl of A does not match the magnetic field expressions, then it is not possible to find a magnetic vector potential that satisfies the conditions.
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Please only serious answers if you dont know the ansnwer, dont answer
Answer:
Explanation:
A free-body diagram is a sketch of an object of interest with all the surrounding objects stripped away and all of the forces acting on the body shown. The drawing of a free-body diagram is an important step in the solving of mechanics problems since it helps to visualize all the forces acting on a single object. The net external force acting on the object must be obtained in order to apply Newton's Second Law to the motion of the object.
A free-body diagram or isolated-body diagram is useful in problems involving equilibrium of forces.
Free-body diagrams are useful for setting up standard mechanics problems.
calculate the internal resistance of a light bulb which is rated at 80 watts? [assume its rating is intended for 120 volt source]
Internal resistance of an 80-watt light bulb requires 0.72 Amps to operate.
What is the proper definition of resistance?Resistance is the action of opposing anything you disapprove of or disagree with; "he encountered a general feeling of resistance from many citizens"; "despite opposition from the newspapers he moved forward"
What is resistance and how is it used?The opposition should not be viewed negatively. Similar to how friction makes it possible for us to walk, drive, and other activities, it should be valued. Since resistance is known to transform electrical energy into heat, heater coils use resistance to produce heat that may be used for cooking and warming up spaces.
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How did people create a pyramid?
Answer: Pharos just bossed people around. They killed anyone who refused to work. In the end the many people died and the pyramids were created.
Explanation:
the amount of gravitational force exerted on each other between two objects depends on their
Answer:
Explanation:
The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled.
How far will you travel in 3.5 hrs if you have an average velocity of 90 km/hr
Answer:
The answer is 315 km