light travels through a substance at 1.97x10^8. what is the index of the liquid?

Answers

Answer 1

In finding the index of refraction, we use this formula n= c/v

where n is the index of refraction
c is velocity of light in vacuum, this is constant and is equivalent to 3x10^8 m/s
v is the velocity of light in a particular medium, in here we use 1.97x10^8 m/s

Using the formula,

n = (3x10^8 m/s) / (1.9x10^8 m/s)
n = 1.52284264
n = 1.52

Hope this helps. :)

Answer 2

n = c / v
n = index of refractionc = velocity of light in vacuum = 3x10^8 m/sv = 1.97x10^8 m/s

n = (3x10^8 m/s) / (1.9x10^8 m/s)n = 1.52

the index of the liquid is 1.52

Related Questions

Its C Disposal of radioactive waste is a major concern in nuclear power production. Which method of disposal is least dangerous?

Answers

Least dangerous i could be wrong but feeding it to racoons.

I need help finding the answer:
When a guitar string plays the note "A", the string vibrates at 440 Hz. What is the period of the vibration?

Answers

The formula applicable:

Period, T = 1/f --- Where T = period (s), and f = frequency (Hz).

Substituting by use of the values of frequency given in the current scenario,

T = 1/440 = 2.27*10^-3 seconds

Final answer:

The period of the guitar string's vibration when it plays the note 'A' is approximately 0.00227 seconds.

Explanation:

In physics, the period of vibration refers to the time it takes for a single complete cycle of vibration to occur. It is usually represented by the symbol T and is measured in seconds. To find the period of the guitar string's vibration, you can use the formula T = 1/f, where f is the frequency of the vibration.

In this case, the frequency of the guitar string playing the note 'A' is given as 440 Hz. So, the period can be calculated as T = 1/440 = 0.00227 seconds.

Therefore, the period of the guitar string's vibration when it plays the note 'A' is approximately 0.00227 seconds.

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Why are conductors and insulators both required to construct the electrical wiring in our home

Answers

Conductors are materials with many free electrons, so they allow electrical current to flow through them. Therefore, conductors are required in order to bring electricity to every room of the house.

Insulators, instead, are materials with few or no free electrons, so electrical currents do not flow through them. In the electrical wiring of the houses, they are used in order to isolate the conductive elements of the wire from other conductive materials (in fact, if the conductive elements touch other conductive elements of the house, part of the current would be dissipated)

In the past, how did people use the systematic movement of celestial bodies? Select all that apply.

making agricultural decisions
shipping navigation
predicting the future
spiritual and religious practices
tracking storms

Answers

The answer is actually a,b, and d
Brainliest?

In past, people used the systematic movement of celestial bodies for making agricultural decisions, shipping navigation and for spiritual and religious practices.

Answer: Options 1, 2, and 4

Explanation:

The observation of systematic movement of celestial bodies comes under the field of Astrometry. The celestial mechanics which defines are the movement of celestial bodies is also a kind of Astrometry.

The celestial mechanics is used by the people in past to help in navigation during ship journey. Even the astrometry will help in predicting the seasons to be coming which will help in making agricultural decisions.

In astrology, the position of celestial bodies help in deciding the time for spiritual and religious practices. So, in ancient days, people used the systematic movement of celestial bodies in naked eyes to decide these.

What waves shown on the electromagnetic spectrum disturb the medium it passes through at answer?

Answers

Electromagnetic waves do not require material medium for propagation. Radiowaves have the longest wavelength but the least frequency.
Gamma ray has the shortest wavelength but the highest frequency.

The gamma rays and x-rays due to their high frequency, they can disturb the medium they pass through. They have high energy that can cause damage to the matter the come across.

How can medical assistant use the knowledge of the nervous systems to care for the patient with Parkinson’s and other neurological disorders

Answers

Having a wide knowledge of the nervous system and the of how the brain’s different parts collaborate to organize all our movements, senses thoughts, and emotions enable the medical assistants to handle the cognitive and behavioral complications in the patient. It helps them to deal with wounds and falls since the nervous disorder generally affects cognition and movement. Having a wide knowledge of how the nerve impulses are transmitted from the nervous system to the brain, when it is then converted into feelings such as pleasure, pain, cold or hot, the medical assistant will be able to take response immediately on the patient prior they start complaining of sensory indications, such as discomfort, irritating, and unresponsiveness.

How many significant digits are in the measurement 50.003010 nm?

Answers

Answer:

Significant digits = 8

Explanation:

Significant digits in a number which is more than 1 and if the number if having decimal in it then as per the rule all the digits present in the number must be significant digit

for an example we will say

1.00 = 3 significant figures

so in this way for all such kind of numbers we have to count all digits in it

so here given number is more than 1 and it contains the decimal in it

so we will say

50.003010 nm = 8 significant figures

Answer:

There are 15 significant digits

Explanation:

50.00301 nm = 0.0000000500301

Counting the figures makes it 15

A crate of mass 5 kg slides along a horizontal surface with coefficient of kinetic friction of 0.3. the force is pulled by a rope that makes an angle of 30o above the horizontal. the tension in the rope is 150 n. what is the power supplied by the rope to the crate at an instant where the box is moving at a speed of 3 m/s in the direction the rope is pulling it?

Answers

See attachment file below.
The power is 412W
(I'm not so sure of the answer. Can u please confirm it! Thank you.)

Hope it helped!

If 1495 j of heat is needed to raise the temperature of a 351 g sample of a metal from 55.0°c to 66.0°c, what is the specific heat capacity of the metal?

Answers

The amount of heat needed to increase the temperature of a substance by [tex]\Delta T[/tex] is given by
[tex]Q= mC_s \Delta T[/tex]
where m is the mass of the substance, Cs is its specific heat capacity and [tex]\Delta T[/tex] is the increase of temperature.

If we re-arrange the formula, we get
[tex]C_s = \frac{Q}{m \Delta T} [/tex]
And if we plug the data of the problem into the equation, we can find the specific heat capacity of the substance:
[tex]C_s = \frac{1495 J}{(351 g)(66.0^{\circ}C-55.0^{\circ}C)}=0.39 J/g^{\circ}C [/tex]

sorry i don't know the answer i'm really sorry

Jupiter _____.

may have prevented asteroids from forming a planet
has a large gravitational field which can capture small comets
is responsible for creating most known meteors and meteoroids
releases radiation which warms comets and creates a comet tail

Answers

It's a because i chose this and got it right

Answer:

Jupiter may have prevented asteroids from forming a planet

Explanation:

As part of an exercise program, a woman walks south at a speed of 2.00 m/s for 60.0 minutes. she then turns around and walks north a distance 3000 m in 25.0 minutes (a) what is the woman's average velocity during her entire motion?
a.0.824 m/s south
b.1.93 m/s south
c.2.00 m/s south
d.1.79 m/s south
e.800 m/s south

Answers

The woman's average velocity can be calculated by dividing the total distance covered during the motion by the total time of the motion.

In the first part of the motion, the woman moved south with speed v1=2.00 m/s for a time of
[tex]t_1 = 60.0 m = 3600 s[/tex]
therefore the distance she covered is
[tex]S=v_1 t_1 = (2.00 m/s)(3600 s)=7200 m[/tex]

In the second part of the motion, she moved north for [tex]S_2 = 3000 m[/tex] in a time of
[tex]t_2 = 25.0 m = 1500 s[/tex]

Since she moved in the opposite direction, the total distance covered is the difference between S1 and S2:
[tex]S=S_1 - S_2 = 7200 m - 3000 m = 4200 m[/tex] (south)

While the total time of the motion is
[tex]t=t_1 + t_2 = 3600 s + 1500 s =5100 s[/tex]

Therefore, the woman's average velocity is
[tex]v= \frac{S}{t}= \frac{4200 m}{5100 s}=0.824 m/s [/tex] (south)

and the correct answer is A).

Final answer:

The woman's average velocity during her entire motion is approximately 1.79 m/s south.

Explanation:

To find the woman's average velocity, we need to calculate the total displacement and divide it by the total time taken. Southward motion is taken as negative, and northward motion is taken as positive. Let's calculate:

Southward motion: displacement = -2.00 m/s × 60.0 min = -120.00 mNorthward motion: displacement = 3000 mTotal displacement = -120.00 m + 3000 m = 2880.00 mTotal time = 60.0 min + 25.0 min = 85.0 min

Therefore, the woman's average velocity is:

average velocity = total displacement / total time

average velocity = 2880.00 m / 85.0 min

average velocity ≈ 33.88 m/min

To convert to m/s, we divide by 60:

average velocity ≈ 33.88 m/min ÷ 60 ≈ 0.5647 m/s

Since the woman was walking southward, the average velocity is negative. So the correct answer is Option d. 1.79 m/s south.

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What is the wavelength of a photon whose energy is twice that of a photon with a 622 nm wavelength?

Answers

The frequency of the [tex]\lambda_2 = 622 nm = 622 \cdot 10^{-9} m[/tex] wavelength photon is given by
[tex]f_2 = \frac{c}{\lambda_2}= \frac{3 \cdot 10^8 m/s}{622 \cdot 10^{-9} m}=4.82 \cdot 10^{14} Hz [/tex]
where c is the speed of light.

The energy of this photon is
[tex]E_2=hf_2 = (6.6 \cdot 10^{-34}Js)(4.82 \cdot 10^{14}Hz)=3.18 \cdot 10^{-19} J[/tex]
where h is the Planck constant.

The energy of the first photon is twice that of the second photon, so
[tex]E_1 = 2 E_2 = 2 \cdot 3.18 \cdot 10^{-19}J =6.36 \cdot 10^{-19} J[/tex]

And so now by using again the relationship betwen energy and frequency, we can find the frequency of the first photon:
[tex]f_1 = \frac{E_1}{h}= \frac{6.36 \cdot 10^{-19} J}{6.6 \cdot 10^{-34}Js}=9.64 \cdot 10^{14}Hz [/tex]

and its wavelength is
[tex]\lambda_1 = \frac{c}{f_1}= \frac{3 \cdot 10^8 m/s}{9.64 \cdot 10^{14}Hz} =3.11 \cdot 10^{-7}m = 311 nm [/tex]
So, we see that the wavelength of the first photon is exactly half of the wavelength of the second photon (622 nm).

The polar ice caps of mars is believed to consist mostly of

Answers

Solid Carbon Dioxide

The lengthening of a transmitted signal's wavelength and/or a decrease in its frequency, which indicates that the object is moving away from the observer, is called the

Answers

Both the effects (lengthening of the transmitted signal's wavelength and decrease in its frequency) indicates that the object is moving away from the observer, and this phenomenon is called Doppler effect.

In fact, when the object is moving away from the observer, the relative distance between two consecutive crests of the wave emitted by the object increases to the observer eyes, since he's moving away. This means that the wavelength appears larger, and since the frequency is inversely proportional to the wavelength, the frequency appears smaller.

The red shift... Hope it helps!

When x-rays of wavelength 0.312 nm are directed at a crystalline sample, the smallest bragg angle for a certain family of reflecting planes is found to be 28.5°. within the sample, the atoms lie on a simple cubic lattice, a 2-dimensional view of which is shown to the right. assuming that the constructive interference observed is due to the pair of diagonal planes indicated by the two dashed lines, find the distance a between neighboring atoms?

Answers

The equation for bragg's law is nλ=2dsinθ. The smallest angle is when n=1 and we are told the angle is 28.5. d in our equation is the distance between atoms. So:

(1)(0.312*10^-9)=2dsin(28.5)

Solving for d we get

d=3.26925*10^-10m

A calorie is the measurement of ____ required to raise a 1 gram of water 1 degree celsius.

Answers

Calorie is a unit of energy, it is used above all in the area of health to measure the energy content of food.

Therefore the statement must be completed in the following way:

A calorie is the measure of heat required to raise 1 gram of water 1 centigrade.

A 5.3 kg cat and a 2.5 kg bowl of tuna fish are at opposite ends of the 4.0-m-long seesaw. how far to the left of the pivot must a 3.7 kg cat stand to keep the seesaw balanced?

Answers

Moment about the pivot must be equal for the seesaw to balance. Initially, the first cat and the bowl are at 2 m from the pivot.

The moment due to cat = 5.3*2 = 10.6 kg.m
The moment due to bowl = 2.5*2 = 5 kg.m
The unbalanced moment = 10.6 - 5 = 5.6 kg.m

Therefore, the 3.7 kg cat should stand at a distance x from the pivot in left to balance the 5.6 kg.m.
That is,
3.7*x = 5.6 => x = 5.6/3.7 = 1.5134 m to the left (on the side of the bowl)

Final answer:

To keep the seesaw balanced, the 3.7 kg cat must stand 2.06 meters to the left of the pivot.

Explanation:

To keep the seesaw balanced, the torques (rotational forces) on both sides of the pivot must be equal. The torque is given by the product of the mass and the distance from the pivot. In this case, the 5.3 kg cat and the 2.5 kg bowl of tuna fish create a torque on one side, while the 3.7 kg cat creates a torque on the other side. Let's denote the distance from the pivot to the 5.3 kg cat as x:

Torque on one side = 5.3 kg * x

Torque on the other side = 2.5 kg * 1.5 m + 3.7 kg * (4 m - x)

Setting these two torques equal to each other and solving for x:

5.3 kg * x = 2.5 kg * 1.5 m + 3.7 kg * (4 m - x)

Simplifying the equation:

5.3x = 3.75 + 14.8 - 3.7x

9x = 18.55

x = 2.06 meters

Therefore, the 3.7 kg cat must stand 2.06 meters to the left of the pivot to keep the seesaw balanced.

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The atmosphere _________ most of the incoming visual radiation.
A. Absorbs
B. Transmits
C. Reflects

Answers

The answer is Transmit. The atmosphere transmit most of the incoming visual radiation.

Answer:

Absorbs

Explanation:

When the solar radiation or visual radiation arrives on Earth's atmosphere, most of the radiation is absorbed.

A part is reflected and transmitted back but major portion is absorbed by the atmosphere.

This absorb radiation helps to keep the Earth warm and thus maintaining the temperature even in Night time.

A wave has a velocity of 24 m/s and a period of 3.0 s. Calculate the wavelength of the wave

Answers

The applicable expressions is;
Wavelength = Velocity/Frequency
Where

Frequency = 1/Period = 1/3

Therefore,

Wavelength of the wave = 24/(1/3) = 24*3 = 72 m

Answer:

72 m

Explanation:

The period of a wave is the amount of time it takes a wave complete one full cycle. The period is the inverse of the frequency.

Given;

Wave Velocity V = 24 m/s

Period T = 3.0s

Frequency of the wave F = 1/T= 1/3

Wavelength W= ?

Wavelength is the distance covered by a wave in a complete cycle i.e from one crest to another, or from one trough to another.

W = V/F = VT

W = 24/ (1/3)

W = 24 × 3

W = 72 m

Calculate the absolute pressure at the bottom of a freshwater lake at a point whose depth is 27.8 m. assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kpa.

Answers

The relative pressure at the bottom of the lake is given by
[tex]p_r = \rho g h[/tex]
where
[tex]\rho[/tex] is the water density
g is the gravitational acceleration
h is the depth at which the pressure is measured

At the bottom of the lake, h=27.8 m, so the relative pressure is
[tex]p_r = (1\cdot 10^3 kg/m^3)(9.81 m/s^2)(27.8 m)=2.72 \cdot 10^5 Pa[/tex]

To find the absolute pressure, we must add the atmospheric pressure, [tex]p_a[/tex], to this value:
[tex]p=p_r + p_a =2.72 \cdot 10^5 Pa + 1.013 \cdot 10^5 Pa =3.74 \cdot 10^5 Pa[/tex]

A boat is moving at 3 m/s and increases its speed at 2 m/s2. How fast is it moving after it travels 10 m from the point it begins to speed up?

Answers

The boat is moving by uniformly accelerated motion, with initial speed
[tex]v_i = 3 m/s[/tex]
constant acceleration of
[tex]a=2 m/s^2[/tex]
and it covers a distance of
[tex]S=10 m[/tex]

So we can use the following relationship to find the final speed, [tex]v_f[/tex]:
[tex]v_f^2 - v_i^2 = 2aS[/tex]
[tex]v_f = \sqrt{v_i^2 + 2aS}= \sqrt{(3 m/s)^2 +2(2 m/s^2)(10 m)} = 7m/s [/tex]

The sun's electromagnetic radiation is produced by

Answers

Final answer:

The sun produces electromagnetic radiation through the movement of electrically charged particles, resulting in a spectrum of radiation that includes harmful UV rays and visible light. This radiation is fundamental for processes like photosynthesis and solar energy generation.

Explanation:

The sun's energy is emitted in the form of electromagnetic radiation, which encompasses a wide array of wavelengths, each with its characteristic energy. This radiation is produced by electrically charged particles undergoing transitions, such as the fusion reactions occurring in the sun's core, which results in the release of energy as photons. These photons travel through space and carry energy, momentum, and when interacting with matter, can exert force.

Among the types of electromagnetic radiation emitted from the sun, we find visible light, ultraviolet (UV) rays, X-rays, microwaves, and radio waves. UV rays have shorter wavelengths than visible light and are more energetic, and they are partially absorbed by ozone molecules in the Earth's atmosphere, which helps to protect living organisms from its potentially harmful effects.

Overall, the sun produces a full spectrum of electromagnetic radiation, measurable by scientists on what is known as the electromagnetic spectrum. The entirety of this spectrum is essential for various processes on Earth, from photosynthesis which supports life to solar panels that harness sunlight for energy.

Which property of light remains unchanged when it enters a different medium?

Answers

The FREQUENCY of light remains unchanged once it leaves the source.

frequency d is the anwsewr

If a rock weighing 2,200 N is dropped from a height of 15 m, what is its KE just before it hits the ground? Remember, weight is measured in newtons (N), and is equal to mass times gravity.

A. 0 J
B. 2,224 J
C. 147 J
D. 33,000 J

Answers

This is a question conservation of energy. That is;
Potential energy = Kinetic energy

mgh = 1/2*mv^2 = KE

Therefore,
KE = mgh = (2200/9.81)*9.81*15 = 2200*15 = 33000 J

The correct answer is D.

A circuit has a current of 1.2 A. If the voltage decreases to one third of its original amount while the resistance remains constant, what will be the resulting current?

Answers

When resistance is constant, current is proportional to voltage. When 1/3 the voltage is applied, 1/3 the current will result.

(1/3)*(1.2 A) = 0.4 A

The resulting current will be 0.4 A.

Two waves have the same speed. the first has twice the frequency of the second. compare the wavelength of the two waves. 1. the second has one third the wavelength of the first. 2. the first has half the wavelength of the second. 3. the first has one third the wavelength of the second. 4. the second has half the wavelength of the first. 5. they have the s

Answers

The basic relationship between frequency, wavelength and speed of a wave is
[tex]\lambda= \frac{v}{f} [/tex] (1)
where
[tex]\lambda[/tex] is the wavelength
v is the wave speed
f is the frequency

The problem says the two waves have same speed, so [tex]v_1 = v_2[/tex], and that the first wave has twice the frequency of the second wave, so
[tex]f_1 = 2 f_2[/tex]
If we use eq,(1), we can compare the two wavelengths
[tex]\lambda_1 = \frac{v_1}{f_1}= \frac{v_2}{2f_2}= \frac{1}{2} \frac{v_2}{f_2} = \frac{1}{2} \lambda_2 [/tex]
Where in the last step we used [tex]\lambda_2 = \frac{v_2}{f_2} [/tex]. Therefore, the first wave has half the wavelength of the second wave, so the correct option is option 2).

A relatively long lived excited state of an atom has a lifetime of 2.05 ms. what is the minimum uncertainty (in ev) in its energy?

Answers

We can solve the exercise by using Heisenberg's principle. In its energy-time version, Heisenberg principle states that the product between the uncertainty on the energy and on the time is larger than:
[tex]\Delta E \Delta t \ \textgreater \ \frac{h}{4 \pi} [/tex] (1)
where [tex]\Delta E, \Delta t[/tex] are the uncertainties on the energy and on the time, and h is the Planck constant.

The lifetime of the particle is 2.05 ms, so we can assume the maximum uncertainty on the time corresponds to the lifetime itself:
[tex]\Delta t = 2.05 ms = 2.05 \cdot 10^{-3} s[/tex]
And so the minimum uncertainty on the energy can be found by using (1):
[tex]\Delta E \ \textgreater \ \frac{h}{4 \pi \Delta t}= \frac{6.6 \cdot 10^{-34} Js}{4 \pi (2.05 \cdot 10^{-3} s)}= 2.56 \cdot 10^{-32} J[/tex]

Keeping in mind that [tex]1 eV = 1.6 \cdot 10^{-19}J[/tex], we can convert the energy uncertainty into electronvolts:
[tex]\Delta E = 2.56 \cdot 10^{-32} J : 1,6 \cdot 10^{-19} J/eV = 1,6 \cdot 10^{-13} eV[/tex]

You have just completed a wonderful meal of pasta and crusty bread followed by a huge piece of chocolate cake. This carbohydrate-rich meal has lead to the release of large amounts of sugar into your bloodstream. What is necessary to address the change in blood sugar level?

Answers

Your pancreas must secrete a large amount of insulin, to get all that glucose into your cells. If it just stays in your blood for hours and hours, it 'cooks' your kidneys and your eyes, among other internal organs, and they fail sooner than they should.

This is a description of Diabetes ... the production of not enough insulin (Type-2) or none at all (Type-1).

There's no cure. The treatment is:

-- be reasonable about the carbs you take in;

-- get regular exercise;

-- if you still have high levels of glucose in your blood, you'll have to start regular medication (pills) or insulin injections.

Which of these statements would best explain the problem encountered with nuclear waste disposal?

Answers

A) The isotopes have a long half-life and only remain radioactive for a long time period.

Answer: A

Explanation:

A parallel circuit has two 8.0-ohm resistors and a power source of 9.0 volts. If a 12.5-ohm resistor is added to the circuit in parallel, how will the current be affected and what value will it have?

Answers

The initial equivalent resistance of the circuit is
[tex] \frac{1}{R_{eq}}= \frac{1}{R_1}+ \frac{1}{R_2}= \frac{1}{8 \Omega}+ \frac{1}{8 \Omega} = \frac{1}{4 \Omega} [/tex]
which means
[tex]R_{eq}= 4 \Omega[/tex]
Therefore the initial current in the circuit is
[tex]I= \frac{V}{R}= \frac{9 V}{4 \Omega}=2.25 A [/tex]

When the new resistor of [tex]12.5 \Omega[/tex] is added to the circuit in parallel, the new equivalent resistance of the circuit is
[tex] \frac{1}{R_{eq}} = \frac{1}{8 \Omega} + \frac{1}{8 \Omega}+ \frac{1}{12.5 \Omega}= 0.33 \Omega^{-1}[/tex]
from which we find
[tex]R_{eq}=3 \Omega[/tex]
This means that the equivalent resistance of the circuit has decreased, and the new current is
[tex]I= \frac{V}{R_{eq}}= \frac{9 V}{3 \Omega}=3 A [/tex]
which means that the current in the circuit has increased.

Answer:

1/R1 + 1/R2 + ... = 1/Re

So...

1/17.2 + 1/22.4 = 1/Re

0.1021 = 1/Re

Re = 9.792 Ohms

Now use the Voltage equation V = IR

6 = I * 9.792

I = 6/9.792 = 0.613 Amps.Pato 0.61

Explanation:

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