What do we mean by free electrons in conductors?

Q: Why psychics so important?

A: Physics is a branch of science which describe the physical universe around us.

Q: How many kilowatts will be radiated from a spherical black body 15 cm in diameter at a temperature…

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Q: Define Radiowaves.

A: Radio waves are electromagnetic waves which are produced by rapid acceleration and deceleration of…

Q: What is the wavelength of this radio wave in meters?

A:

Q: What does it mean, when we say that simultaneity is relative?

A: When we say that simultaneity is relative it means that the simultaneity of two events depends upon…

Q: What is the difference between a node and an interval and how are they related to cells? In Fig, how…

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Q: What do you mean by ripple factor?

A: The fluctuation of AC component present in the rectified DC output is called as Ripple. The output…

Q: Who is Heinry Hertz and how did he discover radio pulse?

A: Heinrich Hertz or Heinrich Rudolf Hertz,  German physicist who demonstrated that Scottish physicist…

Q: What happens at the beginning of every roller coaster ride

A: You might think that the roller coaster cars have engines inside them that push them along the track…

Q: Which  is the fastest communication channel?

A: A microwave is the fastest communication channel

Q: Briefly describe three states of matter?

A: The three states of matter are:SolidLiquidGasIn solid, the particles are strongly bounded such that…

Q: What do you mean by space quantization?

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Q: Why is Infrared dangerous and how can we be protected?

A: Infrared radiations are very dangerous for us. Very high intensity of infrared radiations can cause…

Q: What is magnetic resonance spectroscopy? What are the basic applications?

A: The study of absorption and emission of radiations from matter is known as spectroscopy. The device…

Q: Who discovered the radio waves?

A: Introduction: In the electromagnetic spectrum, several wavelengths of light are present.…

Q: 6 What is te Emailangle betweenthete uetors A=31+4nd =-5分+1? ST

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Q: When the pandemic is over, I am planning to go skydiving to celebrate. In order to make it as…

A: Given: The initial velocity is 0 m/s. The acceleration due to gravity is 9.8 m/s2. The time duration…

Q: permeability of free space () units is ..........

A: manetic field due to circular coil B=μ₀I/2R

Q: In the previous chapter, we learned the formula E ∼ f. In this chapter, we learned the formula E =…

A: Given:  E = h f

Q: If it takes 8.3 seconds for 2.5 Coulombs of charge to move through a wire, what is the current…

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Q: Being the great space adventurer that you are you arrive on Mars as part of a scientific expedition.…

A: Number of protons (Z) = 213 Number of neutrons (n) = 73Number of electrons = 213

Q: What is direct transmission mode?

A: Mode of transmission in which transfer of data or something else will take place directly that is…

Q: Senaritin2 Every wkend, yoe and your fanily abws find tine so bond with each odher All of your fai…

A: Required : Why the blades rotate in opposite direction.

Q: What do you mean by degrees of freedom?

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Q: How do the mass and electric charge of a proton compare with the mass and charge of an electron?

A: Let qp be the charge of the proton, qe be the charge on the electron, mp be the mass of proton, and…

Q: It is the responsibility of every physicist to ______________ and _______________ , the do…

A: This is related to the basic scientific method employed by every physicist while doing research.

Q: What about for the second picture where the lengths are 4.5 and 2.5?

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Q: Why do different radio stations have different radio frequencies assigned?

A: Solution: Radio stations work on different radio-wave bandwidths, which we will discuss in below to…

Q: If the light needed a medium, what will happen to reality? * Reality will still be the same since…

A: Light is just an Electromagnetic wave which requires no medium and in such a vacuum the speed of…

Q: What Do You Mean By Am Radio?

A: AM Radio is a common example of Am modulation. 550 to 1720kHz will be the frequency band of AM…

Q: In PHY1XX we learnt that atoms are mostly empty space. Yet, when you sit on a chair, you don't fall…

A: Atoms are the smallest part into which an element can be divided. An atom is generally made up of…

Q: What do we mean when we say that outer space is not really empty?

A: The outer space is filled with electromagnetic waves. They all travel with the speed of light. They…

Q: Why is micro wave and radio wave radiation dangerous for us?

A: Microwave radiation is capable of heating the body tissue in the same way it is capable of heating…

Q: You heated a container with 4 liters of water for a certain time and its temperature rises by 2 ̊C.…

A: Heat required is proportional to the product of mass and temperature change.

Q: We take a sample of atoms in the fundamental level. We excite the atoms until they're all in the…

A: Emission spectrum:

Q: Which type of energy is thermal energy a form of?

A: Thermal energy is developed due to the change in the temperature of the substance. Energy…

Q: What is a system and what is the universe, and how are they related to the 2nd Law of Thermodynamics

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Q: What is the frequency, in MHz, of a radio wave with a wavelength of 20 m?

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.