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1. ### Would electric field exist if there were only one type of charge?

Thanks for your explanation! But,What is meant by this line?
2. ### Would electric field exist if there were only one type of charge?

So is it correct to assume this world made up of only one type of charges(electrons)? Would the assumption that only one type of charges exist not affect Gauss Law?
3. ### Would electric field exist if there were only one type of charge?

I believe the answer is incorrect, reasons: The answer assumes that electric field will exist . But this is not the case , until and unless there is a bipolarity there cannot be an electric field ( in case of isolated charged objects, the field exists because the bipolarity is separated by a...
4. ### Electrostatic Shielding

If an isolated conductor without cavities is charged, its excess charge will distribute itself on its surface in order to guarantee that the electric field is zero on its interior. If instead the conductor had an interior cavity, the charges would again distribute themselves on the outer surface...
5. ### Electrostatic Shielding

Ok thanks! I can see things getting clear.. But,what actually prevents the electric field lines generated by external charge *to penetrate and get inside* the cavity throght the material of the conductor and make the electric field inside the cavity non-zero? this is my main doubt.
6. ### Electrostatic Shielding

Suppose,we have a solid spherical conductor with a cavity in it and a charge +q placed outside the sphere.Then how is the electric field inside the cavity zero?Can you please explain this?
7. ### Electrostatic Shielding

What is true is that the field due to the point charge outside of the conductor will not be able to penetrate the shell i.e. there will be no field due to the external point charge anywhere within the conductor nor in the cavity: the field will be **killed off*& by the charges on the outer...
8. ### Magnification of an Astronomical Telescope

My teacher taught me a formula for magnification in case of Compound Microscope, Magnification=(Angle Made By Object On Aided Eye)/(Angle Made by Object on Un-aided Eye) Can I use this formula for calculating magnification of Astronomical Telescope? Thanks!
9. ### B Can Prism form image?

Do Prism form image? If they do form image, then what is the nature of the image formed?
10. ### B Can we get a real image of virtual objects?

Is it possible to get a real image of virtual objects, If so please explain with examples and some real life situations? Look at my assertion "rays will not pass through virtual objects so how it can form real image", is this possible, please help.
11. ### Evaluating This limit

About what second order term are you talking? Note: English is my second language. I will be thankful for any help!
12. ### Evaluating This limit

<Moderator's note: Moved from a technical forum and thus no template.> $$\lim_{x\rightarrow 0} (x-tanx)/x^3$$ I solve it like this, $$\lim_{x\rightarrow 0}1/x^2 - tanx/x^3=\lim_{x\rightarrow 0}1/x^2 - tanx/x*1/x^2$$ Now using the property $$\lim_{x\rightarrow 0}tanx/x=1$$,we have ...
13. ### B 1 to the power of infinity, why is it indeterminate?

But doesn't 1^infty mean that we are multiplying 1 infinite times and hence the final product must be 1.
14. ### B 1 to the power of infinity, why is it indeterminate?

I've been taught that $$1^\infty$$ is undetermined case. Why is it so? Isn't $$1*1*1...=1$$ whatever times you would multiply it? So if you take a limit, say $$\lim_{n\to\infty} 1^n$$, doesn't it converge to 1? So why would the limit not exist?
15. ### B Where will the image be formed?

Suppose light rays from an object fall perpendicular to the surface of the plane mirror. Will the image be formed at +infinity(a virtual image) or -infinity(a real image)? I will be thankful for help!
16. ### Using a Partial Limit

<Moderator's note: Moved from a technical forum and thus no template.> $$\lim_{x \to 0} \cos(\pi/2\cos(x))/x^2$$ I tried to evaluate the limit this way, $$\lim_{x \to 0} \cos(\pi/2\cdot1)/x^2$$ since $$\cos0=1$$ $$\lim_{x \to 0} \cos(\pi/2\cdot1)/x^2=\lim_{x \to 0} 0/x^2$$ Now apply...
17. ### Does the Potential Energy increase during Chemical Bonding?

Hi All, The Potential Energy for two chemically bonding atoms is defined by ,U=1/2(k*q1*q2)/r So it means that when the atoms approach each other then, their Potential Energy will increase. Where am I doing wrong? I will be thankful for help!
18. ### Why doesn't the amount of Cl increase?

Homework Statement Homework Equations Formula of Kp and Kc The Attempt at a Solution You will easily be able to identify that the reaction will proceed in the forward direction when some inert gas is introduced. So,my question is that why won't the amount of chlorine formed increase in...
19. ### Is it possible to apply energy conservation here?

Thanks! I got it. One more doubt, At what level shall i consider the gravitational potential energy zero?
20. ### Is it possible to apply energy conservation here?

Homework Statement Homework Equations Kinetic Energy =1/2*m*v^2 Spring Potential Energy = 1/2*k*x^2 Gravitational Potential Energy = m*g*h The Attempt at a Solution I am thinking to solve this problem using energy conservation but I feel that it is not possible to apply energy conservation...
21. ### Is problem solving an inborn skill?

Thanks ![emoji4]
22. ### Is problem solving an inborn skill?

"How will you compare to someone who is not a clever and works hard? ... You say some things we have no control over, what about your neurons in your brain do you have control over them? Their efficiency, number, synapses, neuro-transmitters? Is the structure and efficiency of your brain less...
23. ### Medical How does chromosome number get halved in meiosis I?

In meiosis 1, it is said that chromosome numbers become halved in the two daughter cells. For example, in a 2n human cell there are 46 chromosomes. During meiosis 1, the cell will undergo interphase and probably the S-phase, where chromosome number becomes duplicated. Now the cell is 4n (i.e...
24. ### Is problem solving an inborn skill?

Studying with them is a good idea! Isn't it?
25. ### Is problem solving an inborn skill?

Thank you so much for guidance!
26. ### Is problem solving an inborn skill?

Thanks! I have started to gain my motivation back. It's Physics and Maths
27. ### Motion when Kinetic Friction is more than Static Friction

I meant - ""when the coefficient of kinetic friction is greater than that of static friction,then what would the motion of block look like?"
28. ### Motion when Kinetic Friction is more than Static Friction

Homework Statement How would the motion of the block look like when the Force of kinetic friciton is more than the Limiting value of static friction? Homework Equations Kinteic Friciton=μN The Attempt at a Solution I think the block after overcoming the limiting value of static friction will...
29. ### Is problem solving an inborn skill?

Thank You everyone for boosting my belief in "Hardwork" back again! One more thing I would like to know is. How does I.Q. affect the problem solving capabilities of a person?Is it influenced by the genetics or can it be improved with practice? I have seen some students with GREAT I.Q. in my...
30. ### Is problem solving an inborn skill?

I asked this because I find myself in situations which trouble me deeply. I solve a deep interesting problem, I learn a new concept, its good but a single question which I'm not able to do, leaves me depressed, sometimes I can't just understand whether I CAN or CANNOT apply a concept to solve...
31. ### Laws of motion while climbing a Rope

Man pulls the rope downwards with a force F.So,By Newton's Third Law an upward reaction force F acts on the man. So is the tension produced in the string equal to F?
32. ### Laws of motion while climbing a Rope

Is the tension force generated in the Rope,T equal to the force applied by the man?
33. ### Laws of motion while climbing a Rope

I'm a little confused with the application of laws of motion on a man climbing a rope. Suppose a man of mass Mg is climbing a rope with an acceleration a. Rope is massless. Now if look through the frame of the piece of rope held by the man, there is a force Mg downward by man, ma downward...

Thanks
35. ### Is F=spring force generated?

But is it possible that F=kx in any condition?
36. ### Is F=spring force generated?

So it means that F=/=kx

F-kx=ma
38. ### Is F=spring force generated?

Yes,F(on right) is a separate force applied to mass m other than the spring force acting on the left side.

No
40. ### Is F=spring force generated?

I am not trying to invoke any law
41. ### Is F=spring force generated?

Is it necessary that the applied force F is equal to the spring force 'kx'?
42. ### Why doesn't the Spring Force change on splitting?

Suppose a spring of spring constant=K and Length=L is split into two parts L1 and L2, with spring constants K1 and K2 respectively. Then,why is it such that the spring force F=K1*L1=K2*L2=K*L? Please give an intuitive explanation of why the spring force doesn't change? I will be thankful for...
43. ### Three blocks and a spring on an inclined plane....

The relation between xi, xj and x would be "xi+xj=x". Please tell how to proceed further!
44. ### Three blocks and a spring on an inclined plane....

In the first equation W_gravity on B=1*x*g*sin(37),is it correct now? And in equation 2 It's not "mH",It's (m+1)[sorry!For my poor handwriting] Yes I think there would be a minus sign because the formula for spring force is "-k*x". Is it correct?
45. ### Three blocks and a spring on an inclined plane....

I tried solving it this way this time..., I have formed two equations, Are these two equations useful in finding "m"? Or,do I need to find something more? I will be thankful for help!
46. ### Three blocks and a spring on an inclined plane....

I think I need to apply the work energy theorem. But on which block ?
47. ### Three blocks and a spring on an inclined plane....

It would be zero,Right?
48. ### Three blocks and a spring on an inclined plane....

It would be, -0.6x=1*10*sin(37) So what's next?
49. ### Three blocks and a spring on an inclined plane....

Homework Statement See question number 1. Homework Equations Work Energy Theorem, work done by all the forces=change in K.E. The Attempt at a Solution I tried solving this question this way, please help me calculate the Work Done by spring here?? I will be thankful for any help!
50. ### Is P(atm)=P(gas)?

And this pressure is being supplied by the gas.Right?