Explore topic-wise InterviewSolutions in .

W=FSv^2-u^2=2ass=v^2/2aF=maW=ma.v^2/2aW=kinetic energy = mv^2/2=1/2mv^2 okay

please post clear image

TheSIderivedunit of electric chargeis the coulomb (C). Inelectricalengineering, it is also common to use the ampere-hour (Ah), and, in chemistry, it is common to use the elementarycharge(e as aunit). The symbol Q often denotescharge.

Radius of gyration or gyradius of a body about an axis of rotation is defined as the radial distance of a point from the axis of rotation at which, if whole mass of the body is assumed to be concentrated, its moment of inertia about the given axis would be the same as with its actual distribution of mass.

It's SI unit is M and CGS unit is CM

Like my answer if you find it useful!

Elastic potential energy is energy stored as a result of applying a force to deform an elastic object.

elastic pationtial enargy to 30 our for the your

Elastic energy is the potential mechanical energy stored in the configuration of a material or physical system as work is performed to distort its volume or shape. Elastic energy occurs when objects are compressed and stretched, or generally deformed in any manner

example can be slingshot

let the mass of the particles be m and v be its velocity. then 0.5mv^2=k.in an elastic collision, the k.e. before and after the collision remains the same and is minimum when the two particles are moving with the same speed, during collision.applying momentum conservationmv+0=(m+m)VV=v/2K.E.=0.5*2m*V^2= (0.5*m*v^2)/2 = k/2 (the kinetic energy when both masses are moving with same speed, at this moment k.e. is minimum and p.e. is maximum)P.E.+ K.E.= kP.E.= k/2.

(C) That is because the electric field lines terminate perpendicular on the surface.

Hooke's Law, F = -kx, where F is the force and x is the elongation.

The work done = energy stored in stretched string = F.dx

The energy stored can be found from integrating by substituting for force,

and we find,

The energy stored = kx²/2, where x is the final elongation.

The energy density = energy/volume

= (kx²/2)/(AL)

=1/2(kx/A)(x/L) = 1/2(F/A)(x/L) = 1/2(stress)(strain)

Like my answer if you find it useful!

Ans :- 1.The SI unit of work is thejoule(J), which is defined as the work expended by a force of onenewton through a displacement of one metre.

2. Scalar Productof Vectors. Thescalar productand the vectorproductare the two ways of multiplying vectors which see the most application inphysicsand astronomy. Thescalar productis also called the "inner product" or the "dot product" in some mathematics texts.

3. The energy stored = (kx^2)/2, where x is the final elongation.

Because it'sderivedfrom a force, it's a vector field. Theelectric potentialis theelectric potential energyof a test charge divided by its charge for every location in space. Because it'sderivedfrom anenergy, it's a scalar field.

Definition. ... Theelectrostatic potential energy, UE, of one point charge q at position r in the presence of anelectric fieldE is defined as the negative of the work W done by theelectrostaticforce to bring it from the reference position rrefto that position r.

As the sphere is conducting the charge on it will be uniformly distributed. So Vb = Va

option D.

magnetic flux​φ = N B A cosθθ is the angle between manetic field and area of vector. NOTE that area vector is always perpendicular to its plane area

i) plane normal. This simplies area vector is parallel Soθ= 0φ = N B A cos 0 = N B AN = 1 turn B = 0.3 T and A = 20 * 10^-2 * 30 * 10^-2 m^2Hence magnetic flux = 0.3 *20 * 10^-2 * 30 * 10^-2 =180 * 10^-4weberii) plane inclined 30 deg with field implies that area vecotr is at 60 degreeSoφ= 0.3 * 20 * 10^-2 * 30 * 10^-2 * cos 60 =90 * 10^-4 Tiii) plane parallel to the field. Area vector is perpenducular. Soθ= 90 degHenceφ = N B A cos 90 = 0 ( incce cos 90 = 0)

Bohr’s orbit looks like a loop of thread of zero diameter. The electron on Bohr’s orbit are moving around the nucleus like planets around the sun on a deterministic route. Schrödinger’s orbitals are diffuse splotches like frog’s male gametes floating in the water. His orbitals describe the probability of electron being on an P(x,y,z) spacial point within unit time. Interesting that in case of the spherically symmetric s-orbitals this probability within the volume of the nucleus is not zero.

The chemical bond distort the p-, d-, and f- orbitals which change the probabilistic density of s- electrons within the nucleus, and cause a measurable shift of the energy levels of the nucleus. That is the base of the Mössbauer-spectroscopy.

please like my answer if you find it useful

L = ∅/I => ∅ = LI = 2*5.8 = 11.6wb option A should be correct.. without considering the orientation of the coil , assuming all magnetic lines flow through the area.of coil

Answer-GF = 1.6×10^-26 NEF = 2.5×10^-16 N

● Explaination-# Given-q = 1.67×10^-19 CE = 1.5×10^3 m = 1.6×10^-27 kgg = 10 m/s^2

# Solution-Gravitational force-GF = mgGF = 1.6×10^-27 × 10GF = 1.6×10^-26 N

Electrostatic force-EF = qEEF = 1.67×10^-19 × 1.5×10^3EF = 2.5×10^-16 N

When we connect a cell to a battery of higheremfthanemfof a cell whose direction is opposite to theemfof a cell then the terminal potential difference of the cell is greater than itsemfbecause it's direction ofcurrentis reversed

If we increase the size of nucleus from 10^-15 to 10^-5 then it means that we are increasing the size by 10^10. so we shall hv to increase the size of atom by 10^10 so size of atom is 10^-10 now we increasing by 10^10 so 10^-10×10^10=10^(-10+10)=10^0=1 i.e. it will be 1 meter.

how can calculate the 10^-10 in answer

Magnetic Flux,⍉=B.A=BAcos x

where, x is the angle between B and A=0°

∴⍉=0.2×0.1=0.02 Weber

These forces are conservative forces .i.e.the work done by these forces does not depend upon the path followed.

Electrostatics is a branch of physics that studies electric charges at rest. Since classical physics, it has been known that some materials such as amber attract lightweight particles after rubbing. The Greek word for amber, ήλεκτρον, or electron, was the source of the word 'electricity

Electrostatic shieldingis the phenomenon that is observed when a Faraday cage operates to block the effects of anelectricfield. Such a cage can block the effects of an external field on its internal contents, or the effects of an internal field on the outside environment.

The process which involves the making of a region free from any electric field is known as electrostatic sheilding.

The speed increases continuously as the force acting on the body is in the direction of fall. This is the force of gravity, which accelerates any falling object with an acceleration of g=9.8m/s^2.so the answer is (D)

Find d(phi) /dt at t=4sec

An electrostatic field line is a continuous curve because a charge experiences a continuous force when traced in an electrostatic field. The field line cannot have sudden breaks because the charge moves continuously and does not jump from one point to the other

Ans :- DON'T plug a bunch of stuff into one outlet or extension cord. ...

DO ask grown-ups to putsafetycaps on all unusedelectricaloutlets. ...

DON'T yank anelectricalcord from the wall.

Angular momentum(L) = m*v*rm= mass of the bodyv= velocityr= distance from the axis of rotation So, L =0.75 * 4 * 3 = 9kgm^2/s

super fast

differentiate 's' with respect to 'dt'.ds/dt=20t.now put t=2 in 20t.the answer is 40 m/s.

c) 40 m\s is the right answer of the following

please accept me best

40m/s is the correct answer for this question

option (c) is the right answer.

40m/s is correct answer

answer c is the correct answer

The magnetic field lines pass through the paramagnetic material while the magnetic field lines move away from the diamagnetic material.

Like my answer if you find it useful!

Using diffrentiation methodx = 18t + 5t^2dx / dt = 18 + 10tv = 18 + 10tt = 2 secv = 18 + 10 * 2= 18 + 20= 38 m / sect = 3 secv = 18 + 10 * 3= 18 + 20= 48 m / sv(av) =( 38 + 48)/ 2= 43 m/swcdv / dt = 10a = 10 m/ s

Position of the car is given by Integration of vdt = s = -12t²/2 + 12t + c

and when t = 0 , s = 5 so c = 5

so, S = -6t²+12t+5

also, a = dv/dt = -12 m/s²