How the first equation became to the second equation?

Q: Two charges q1 =Q and q2 =3.4Q are separated by a distance d. The electric force between them is equ...

A:

Q: A rectangular loop of wire with sides 0.230 and 0.415 m lies in a plane perpendicular to a constant ...

A: Here we have to use Faraday's law.

Q: Which option shows a valid possibility for electric field lines near the surface of a conductor? Fie...

A: Using Maxwell's equation ∇·E =0using divergence theorem,∫∇·E.dV =∫E.dS So, ∫E.dS =0 this implies, ES...

Q: (a) The colour temperature can be determined from two magnitudes corresponding to two different wave...

A:  To show that : Tc = 7000 K(B-V) +0.47                      where, wavelength of B band, λB= 440 nm ...

Q: 5.11 A uniform circular disk of mass m and radius r rolls without slip along a plane inclined at a c...

A: As the angle is increased form horizontal, the component of gravitational field parallel to the plan...

Q: On a square wireframe with side length a in empty space, there is a linear charge density ρl. Calcul...

A:

Q: A signal of bandwidth 3.5 kHz is sampled and quantized and coded by a PCM system. The coded signal i...

A: Given data: Bandwidth fm=3.5 kHz. Transmission rate 50 kbps. Peak voltage V∘=4 V. RMS value of the ...

Q: Why do you think the inside of a car feels so much warmer than its surroundings on sunny days? How ...

A: The temperature inside the car depends upon sunlight radiations and surrounding temperature. The car...

Q: Explain briefly: 1. Charging by conduction 2. Charging by induction

A: The transfer of thermal energy through physical contact is called conduction. Now, conduction of cha...

Q: A 2 kg ball is dropped from a height of 71 m. What will be the KE after 1.74 sec?

A: Given: Mass of ball is 2kg. Height from which ball is dropped is 71m.

Q: A negative charge is in a moving northwest in a southwest magnetic field. Find the direction of the ...

A: Here we have to use Lorentz force  

Q: An experiment is carried out for liquid of density, p and viscosity, µ which flows freely under the ...

A: The variables are, ρ,µ,g,d,D,h   The Buckingham theorem leads to 4 coefficients, as, π1=ραgbhcT  a=0...

Q: Use Huygens’ principle to show how a plane wavefront propagates from a denser to rarer medium. Hence...

A: Assume XY a line which separate two mediums, denser medium and rarer medium. Let,v1=Speed of light i...

Q: Sound waves in air are: A. transverse B. longitudinal C. electromagnetic D. polarised

A:   A wave in which the particles of the medium vibrate in the direction of the line of advance of the...

Q: A heavy nucleus X of mass number 240 and binding energy per nucleon 7.6 MeV is split into two fragme...

A: Given: The mass number of nucleus X is MX=240. The binding energy per nucleon of nucleus X is EX=7....

Q: Neutrinos produced in the sun escape immediately. Why?

A: The neutrinos can be described as particles that dont have any charge as well as they can be conside...

Q: A semielliptical arch supports a bridge that spans a river 20 yards wide. The center of the arch is ...

A:   Given :Width of river = 20 yardsdistance between centre of the arch and river = 6 yards

Q: 12. Figure shows a non-conducting ring of uniformly distributed charge of q2 and a point particle qı...

A: Given that: VP =0

Q: 4. One technique for removing warts is to run an electrical current through them. The patient sits o...

A: a)Since Energy per unit time (Power) needs to be High and current is low ,Voltage will be High Becau...

Q: Please help with this question. Thank you!

A: Given: The time taken by the pendulum to complete two cycles is 5 s. The  distance covered in 1 cycl...

Q: The Tunguska event refers to a meteor impact on June 30, 1908. On that day, a meteor entered the Ear...

A: Question:      He felt the ground shake. Next, an invisible force threw him about a meter away from ...

Q: Confirm that charge, electron family number, and the total number of nucleons are all conserved by t...

A: Given reaction

Q: (a) Draw the graph showing the variation of de Broglie wavelength of a particle of charge q and mass...

A: In many experiments it is proved that a particle also behaves as a wave and has dual nature. So de B...

Q: Using the language of conservation of energy, discuss why or why note friction is a considered a non...

A: A conservative force is defined as forces that do work that are not path dependent, or in other word...

Q: A spring with a mass of 2 kg has a damping constant 14 kg/s. A force of 3.6 N is required to keep th...

A:

Q: Average Precipitation for Tokyo, Japan (inches)  Jan  Feb  Mar  Apr  May  Jun  Jul  ...

A: The below data is given:   Average Precipitation for Tokyo, Japan (inches)  Jan  Feb  Mar  ...

Q: A calorimeter contains 1.500kg of ice at -10.0°C. Then 0.500kg of water vapor at 100.0'C is added to...

A: Principle of Calorimetry When an object of high temperature is brought in contact with an object of ...

Q: B1. The energy flow rate (power per unit area) in an electromagnetic wave in vacuum is given by the ...

A: The Poynting vector can be calculated using the given formula as below,

Q: Consider a cylindrically symmetric distribution of charge.  It consists of a tube of charge of radiu...

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Q: A waterfall ride at King’s Dominion is 50 m high. The water flows over the top of the falls with a s...

A: Given data: The height is h=50 m. The initial speed of the water is v1=3 m/s. The final speed of t...

Q: Find the radiation dose in Gy for: A 10-mSv fluoroscopic x-ray series.

A: To find the sievert from Gray and vice versa:We can use, Gy=SvRBEWhere, Sv is SievertGy is Grayand R...

Q: elaborate your answer

A: BJT stands for Bi-polar junction transistor. The BJT is made by three individually doped regions alo...

Q: Use y - yı = m(x – x) to find the equation of the line that contains (a, b) and is perpendicular to ...

A: Concept used: The product of slopes of perpendicular lines is -1.

Q: The Bohr model for the hydrogen atom can be extended to cover other atoms when they are stripped fre...

A: When electrons absorbs energy it get excited to the higher energy levels and these energy levels are...

Q: A single-crystal silicon sample 0.25 µm-thick is illuminated with a monochromatic light (single fre-...

A: Given that,hν=3eVIncident power=10mWSilicon sample=0.25μmWe know that,total energy absorbed by semic...

Q: Draw a sketch of the Maxwell model and label all components. Draw a graph showing displacement versu...

A: Solution given below:

Q: What angles can the spin S of an electron make with the z-axis?

A: The spin of the electron is given by :  S=s(s+1)h2πHere, s is the spin quantum number. For electron ...

Q: In hydrogen atom, an electron undergoes transition from 3rd excited state to the first excited state...

A: a)when electron comes from any state to n=2(First excited state) ,It falls in Balmer series. b)when ...

Q: State two reasons why high frequency carrier waves are needed in transmitting a message signal.

A: High frequency carrier waves are used in transmitting a  signal. The following are the two main reas...

Q: Asap (Termodynamic)

A: Using the first law of thermodynamics  ∂Q=dU+∂WTdS=dU+PdVdS=1TdU+PTdVdSdUV=1T

Q: A lightning bolt generates both a bright flash of light and a loud thunder of sound. Explain how the...

A: This can be done by calculating the extra time taken by sound waves to reach than light waves as spe...

Q: Consider a charge of size +3.8 x 10-4 C and mass 8 kg is traveling to the left towards a +1.7 x 10-4...

A: Given q1=3.8 x 10-4 C q2=1.7 x 10-4 C m1=8kg v1=119m/s k = 9 x 109 N m2 / kg2.

Q: Draw the shape of the wavefront coming out of a concave mirror when a plane wave is incident on it.

A: When plane wave incident on concave mirror, After reflection every point in concave mirror acts like...

Q: infini ace ha arface

A:   Solution :(1)  E→  at 4,5,0We know that electric field due to charged surface is given by E = δs2 ...

Q: Graph options in the answer choices for b and c are the same.

A:

Q: The plane curve described by the parametric equations x = 3 cos t and y = 3 sin t, 0≤ t < 2π, has...

A: The solution is given below:  

Q: true or false A supernova core with a mass 2X that of the Sun produces a Black Hole

A: The Sun need to be concerning 20X additional large to finish its life as a black hole. Stars that ar...

Q: Please help with the second page. I have done the first page but the second page refers to the first...

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Q: Write briefly any two factors which demonstrate the need for modulating a signal. Draw a suitable di...

A: We look into the factors which affect the transmission of signals which provided the need for modula...

Q: How would you explain to someone why it is necessary to reverse the inequality symbol when multiplyi...

A: Given: To explain the reverse of an inequality symbol if multiplies on the both sides of an inequali...