Final answer:
Option B is correct; the speed of light is a universal constant in a vacuum and is unaltered by the source's motion or the observer. The speed decreases in different media while the frequency remains constant, leading to a change in wavelength.
Explanation:
The correct statement about the speed of light is that no object or electromagnetic (EM) wave can move faster than the speed of light in a vacuum. This is expressed as option B: No object or EM wave can move faster than the speed of light in a vacuum.
It is a fundamental postulate of the theory of relativity that the speed of light in a vacuum is a constant, which is approximately 3.00×108 m/s, and does not depend on the motion of the source or the observer. In fact, the speed of light will slow down when it passes through a medium due to interactions with the material's atoms, which change its permittivity and/or permeability.
The wavelength and speed of light can change as light enters different media; however, the frequency remains constant. This phenomenon can be explained using the relation n = c/v, where 'n' is the index of refraction, 'c' is the speed of light in a vacuum, and 'v' is the speed of light in the medium. Since the frequency (f) is unaltered, and we know that v = λf (where λ is the wavelength), the wavelength must adjust to accommodate the change in speed when light travels through various media.
If the resistance of an electric circuit is 12 ohms and the voltage in the circuit is 60 V, the current flowing through the circuit is...
A. 60 A.
B. 5 A.
C. 0.2 A.
D. 720 A.
The velocity of sound in sea water is 1533 m/s. find the bulk modulus (in n/m2) of sea water if its density is 1.025 ´ 103 kg/m3.
Answer:
Bulk modulus, [tex]B=2.40\times 10^9\ N/m^2[/tex]
Explanation:
Given that,
The velocity of sound in sea water, v = 1533 m/s
Density of water, [tex]\rho=1.025\times 10^3\ kg/m^3[/tex]
We need to find the bulk modulus. The speed of sound also depends on the bulk modulus of the material. The relationship is given by :
[tex]v=\sqrt{\dfrac{B}{\rho}}[/tex]
[tex]B=v^2\times \rho[/tex]
[tex]B=(1533\ m/s)^2\times 1.025\times 10^3\ kg/m^3[/tex]
[tex]B=2.40\times 10^9\ N/m^2[/tex]
So, the bulk modulus of the sea water is [tex]2.40\times 10^9\ N/m^2[/tex]. Hence, this is the required solution.
The sound emitted by bats has a wavelength of 3.7 mm. what is the sound's frequency in air?
A 30w light bulb uses 600J of electrical energy in a certain period of time. In that time , it produces 450 J of light energy. The rest of the energy is wasted calculate the efficiency of the light bulb
The efficiency of the light bulb is 75%.
Calculating The Efficiency Of A Light Bulb.
To calculate the efficiency of the light bulb, you can use the following formula:
Efficiency (%) = (Useful Energy Output / Total Energy Input) * 100
In this case:
- Useful Energy Output is the light energy produced, which is 450 J.
- Total Energy Input is the electrical energy used, which is 600 J.
Efficiency (%) = (450 J / 600 J) * 100 = (3/4) * 100 = 75%
So the efficiency of the light bulb is 75%. This means that 75% of the electrical energy input is converted into useful light energy, while 25% is wasted as other forms of energy, such as heat.
Learn more about Efficiency:
https://brainly.com/question/13222283
#SPJ3
What is the speed of a wave with a frequency of 0.2 Hz and a wavelength of 100 meters?
Answer: The velocity of the wave is 20m/s
Explanation: The velocity of a wave can be obtained by the equation:
Velocity = wavelenght*frequency.
or v = λ*f
In this case, we know that: λ = 100 meters, f = 0.2Hz (where Hz means 1/s)
then, we have that the velocity of the wave is:
v = 100m*(0.2*1/s) = (100*0.2)m/s = 20m/s
The speed of a wave is mathematically given as
[tex]\lambda= 20m/s[/tex]
What is the speed of a wave with a frequency of 0.2 Hz and a wavelength of 100 meters?Question Parameters:
the speed of a wave with a frequency of 0.2 Hz
and a wavelength of 100 meters
Generally, the equation for the Wave speed (m/s) is mathematically given as
[tex]\lambda= frequency (Hz) x wave length (m) \\\\\lambda=0.2 x 100[/tex]
\lambda= 20m/s
For more information on Wave
https://brainly.com/question/3004869
If environmental triggers cannot be avoided or modified, they may make it difficult to extinguish a behavior.
Answer:
true
Explanation:
An experiment yielded the above temperature and time information. what is the freezing point of the material in this experiment if the material is a solid at time zero?
An opera singer sings a note that breaks a glass. This is an example of _____. consonance dissonance resonance reflection
The Answer is
C. Resonance
LOL EZ CLAP
1. A U.S. manufacturer wants to sell computer equipment to companies in Honduras. Because the U.S. government limits trade with Honduras, the manufacturer is required to obtain an export license from the Department of Commerce before selling and shipping the equipment to the purchasers. The export license fee is $8,100, not including a nonrefundable application fee of $2,700. What are the possible effects of these fees?
If the US government does not allow the manufacturer to export their products to Honduras, the manufacturer will lose the non-refundable application fee of $2,700 and because the U.S. government limits trade with Honduras, the manufacturer is required to obtain an export license from the Department of Commerce, which can result to a shortage of demand for US products.
In addition, the total value of product exports must not less than $10800 for the duration of the license so that the application and license fee will be worthwhile.
The imposition of an export license fee and a nonrefundable application fee can increase costs, reduce profit margins, and impact demand for U.S. manufacturers selling to Honduras.
Obtaining an export license for selling computer equipment to Honduras involves a fee of $8,100, plus a nonrefundable application fee of $2,700. These fees could have several potential effects on the U.S. manufacturer:
Increased Costs: The total cost of $10,800 ($8,100 + $2,700) may increase the final price of the equipment, making it less competitive in the Honduran market.Reduced Profit Margins: Unless the manufacturer can pass these costs onto the buyers, the profit margins will be reduced.Impact on Demand: Higher prices due to increased costs can result in lower demand, as buyers may seek more affordable alternatives.For example, if the equipment normally sells for $100,000, adding $10,800 in fees could push the price to $110,800, potentially reducing its attractiveness compared to local or other international sellers.
To what volume will a sample of gas expand if it is heated from 50.0°c and 2.33 l to 500.0°c?
The volume of the gas at [tex]500^{\circ} \text{C}[/tex] is [tex]\fbox{\begin\ 5.576\,{\text{L}}\\\end{minispace}}[/tex].
Further Explanation:
Consider the pressure of the gas to be constant.
The change in the volume of the gas when the temperature of the gas is varied by keeping the pressure of the gas at a constant value is defined by the Charles' Law.
Concept:
According to the Charles law, the volume of the gas is directly proportional to the temperature of the gas at constant pressure.
The Charles' law can be stated as:
[tex]\fbox{\begin\\V\propto T\\\end{minispace}}[/tex]
The above expression can we written as.
[tex]\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]
Convert the temperature of the gas into kelvin.
[tex]T=273+T^\circ\text{C}}}[/tex]
Here, T is the temperature in kelvin and [tex]T^\circ\text{C}}}[/tex] is the temperature in centigrade.
The initial temperature of the gas is [tex]50^\circ\text{C}[/tex]. The temperature of the gas in kelvin is.
[tex]\begin{aligned}{T_1}&=273+50\\&=323\,{\text{K}}\\\end{aligned}[/tex]
The final temperature of the gas is [tex]500^\circ\text{C}[/tex] . The temperature in kelvin is.
[tex]\begin{aligned}{T_2}&=273+500\\&=773\,{\text{K}}\\\end{aligned}[/tex]
Substitute the values of temperature and volume in the expression of the Charles' Law.
[tex]\begin{aligned}{V_2}&=\frac{{{T_2}}}{{{T_1}}}{V_1}\\&=\frac{{773\,{\text{K}}}}{{323\,{\text{K}}}}\left({2.33\,{\text{L}}}\right)\\&=5.576\,{\text{L}}\\\end{aligned}[/tex]
Thus, the volume of the gas at [tex]500^\circ\text{C}}[/tex] will be [tex]\fbox{\begin\ 5.576\,{\text{L}}\\\end{minispace}}[/tex].
Learn More:
1. Examples of wind and solar energy https://brainly.com/question/1062501
2. Stress developed in a wire https://brainly.com/question/12985068
Answer Details:
Grade: High school
Subject: Physics
Chapter: Gas law
Keywords:
Charles law, temperature, volume, initial, final, kelvin, centigrade, 50 C, 500 degree, 500 C, 50 degree, 2,33 L, gas expand, sample, heated.
To solve this, we apply Charles's law, which relates the volume and the temperature of a gas when the pressure is held constant. Temperature values need to be converted to Kelvin, and we solve the equation V1/T1 = V2/T2 to find out the volume of the gas when heated.
Explanation:To find out to what volume the sample of gas will expand when heated from 50.0°c and 2.33 l to 500.0°c, we can apply Charles's law. Charles's law states that the volume and temperature of a gas have a direct relationship when pressure is held constant. Thus, when the temperature goes up, so will the volume, and vice versa.
In this problem, we start by converting temperatures from Celsius to Kelvin, because Charles's law uses the absolute temperature scale (Kelvin). So, 50°C would convert to 323.15K, and 500°C would convert to 773.15K.
Then, we set up the equation using Charles's law V1/T1 = V2/T2 where V1 = 2.33L, T1 = 323.15K, T2 = 773.15K and V2 is what we want to find. Solving this equation with the given parameters will give us the unknown gas volume V2 at 500°C.
Learn more about Charles's Law here:https://brainly.com/question/16927784
#SPJ3
How do cranial nerves transmit information to the senses?
Answer:
They transmit directly between the brain and the sense organs.
Explanation:
Cranial nerves – Nerves that emerge directly from the brain and transmit information directly between the brain and various organs and muscles
In object moving at 30 M/S takes five seconds to come to a stop what is the objects acceleration
which reaction is a single replacement reaction??
A. 2H2+O2-2H20
B. 2H202-2H20+O2
C. KOH+HCI+H2O
D. Cu+ 2AgNO3- 2Ag +Cu(NO3)2
1.) The radio wave from a station broadcasting at 1.3×10^6 Hz has a wavelength of 230 m. What is the wave's speed?
2.) A wave has a frequency of 575 Hz. What is its period?
3.) A humming bird feeder is tied by a rope to a tree branch. You notice that in a gentle breeze, the feeder moves back and forth 15 times in 1 minute. How long is the rope?
converge means ?
a. come together to a point
b. spread apart or fanout
c. line up parallel
In the formulas for latent heat of fusion and latent heat of vaporization, what does Q represent?
Final answer:
Q represents the amount of heat energy required for phase change in the context of latent heat equations. It is calculated using mass and the substance-specific latent heat constants for fusion and vaporization.
Explanation:
In the context of the latent heat formulas, Q represents the heat required to change the phase of a substance. Specifically, for the latent heat of fusion, Q = mLf where Lf is the latent heat of fusion, the constant that denotes the amount of heat energy required to change 1 kilogram of the substance from a solid to a liquid without changing its temperature. For the latent heat of vaporization, Q = mLv where Lv is the latent heat of vaporization, indicating the amount of heat energy needed to change 1 kilogram of the substance from a liquid to a gas. The values of Lf and Lv are determined experimentally for different materials. For instance, for water, Lf is 334 kJ/kg, thus Q for turning 1 kilogram of ice at 0°C into water is Q = 3.34 × 105 J. The latent heat of vaporization for water is Lv = 2256 kJ/kg, meaning the energy required to vaporize mass m of water is Qv = mLv.
What is the difference between AM radio waves and FM radio waves?
A-AM waves travel short distances along the Earth’s surface; FM waves travel farther.
B-An AM wave varies in amplitude; an FM wave varies in frequency.
C-FM waves are better reflected by particles in the Earth’s atmosphere.
D-An FM wave varies in amplitude; an AM wave varies in frequency.
If a cell phone is dropped from a very tall building, how far has the phone fallen after 2.7 seconds, neglecting air resistance?
The phone has fallen approximately 36.621 meters after 2.7 seconds.
Explanation:In order to determine how far the phone has fallen after 2.7 seconds, we can use the equation of motion: s = ut + (1/2)at², where s is the distance, u is the initial velocity, t is the time, and a is the acceleration. Since the phone is dropped from rest, its initial velocity is 0 m/s. Neglecting air resistance, the only force acting on the phone is gravity, which accelerates it at a rate of 9.8 m/s². Plugging in the values, we get:
s = (0)(2.7) + (1/2)(9.8)(2.7)²
s = 36.621 m
Therefore, the phone has fallen approximately 36.621 meters after 2.7 seconds.
Learn more about falling distance here:https://brainly.com/question/15096680
#SPJ12
Baking soda is often used in experiments to neutralize vinegar. In the picture above, the beaker on the left contains a solution of vinegar. What can you conclude about the picture on the right?
A) The solution on the right has a pH less than 7.
B) The solution on the right will not conduct electricity.
C) It has similar characteristics as HCl and H2SO4.
D) It must be a base since is has the opposite reaction to litmus paper as vinegar and vinegar is an acid.
it would be D since it would react the opposite of the litmus paper
A baseball has a mass of 145 g A bat exerts a force of 18400 N on the ball what is the acceleration of the ball
What is voltage actually? Need an informal and non academic term explanation........TIA
Strictly speaking, will a penny be slightly more massive if it has a negative charge or a positive charge? discuss.
The speed of light in a vacuum is 2.99x10^8 m/s. calculate its speed in miles per hour.
What is the approximate range of wavelengths for visible light?
When the surface of an object is ____ the plane of projection, the surface appears in its true size and shape on the plane of projection?
99 POINTS!!!
Why do people on Earth see only one side of the Moon when the Moon is visible in the sky?
A. The Moon does not rotate.
B. The Moon does not revolve.
C. The Moon and Earth rotate at the same rate.
D. The Moon rotates and revolves at the same rate.
Hello!
I believe the answer is C) The Moon and Earth rotate at the same rate. The moon and the earth rotate at the same rate. Meaning that the moon orbits the earth in 27.322 days. It also takes approximately 27 days for the moon to rotate once on its axis. So as a result, the moon does not seem to be spinning, but appears to observers from Earth to be keeping almost perfectly still.
I hope it helps!
Using what you know about newton's second law explain why a car with a lager mass use more fuel than a car with a smalle mass. assume both car dreive the same distance
A crane lifts a 6.500 N weight 10 m in 180 seconds. What power is used?
How would your kidneys likely respond to the ingestion of too much soda (such as Pepsi)?
Answer:
This would increase the formation of the NH3 buffer.
Explanation:
This would increase the formation of the NH3 buffer. Since Pepsi has acid in it, it would cause the kidneys to reabsorb bicarbonate from the urine leading to an increase in the formation of the NH3 buffer.
In a third class lever, the distance from the effort to the fulcrum is ____________ the distance from the load/resistance to the fulcrum.