Recent content by IIK*JII

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    How Does Doubling the Current Affect the Compass Needle's Deflection Angle?

    Homework Statement A conducting wire runs directly over a horizontal compass in the north-south direction. When a current of magnitude I passes through the wire, the compass needle swings 20° to the west and stays in that position. When a current of 2I passes through the wire, the compass...
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    Close tube with string oscillation

    :)) Thank you Simon Bridge I got it now :)
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    Close tube with string oscillation

    Thank you Simon Bridge,, your explanation is good help me imagine what this problem want I think, for example, x2 from your meaning is length of string that I can find from wavelength right??
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    Close tube with string oscillation

    Thank you very much Simon Bridge :) Did you mean the block should move up?? and I should find height of the block when it moves up??
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    Close tube with string oscillation

    Homework Statement In attached figure, a closed tube is placed near a string that is fixed at one end and has a weight attached to its other end. When bridges A and B are positioned at the points shown,plucking the string between A and B causes the tube to resonate at its fundamental...
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    How do the Doppler Effect and beat frequencies explain sound wave phenomena?

    Yukoel ! Okay, I understand it because I inverted the situation.. Thanks a lot :)
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    How do the Doppler Effect and beat frequencies explain sound wave phenomena?

    Homework Statement In the figure, a motionless observer stands between sound sources A and B, which oscillate at 338 Hz and 342 Hz, respectively. The observer hears a beat. Next, when the observer begins moving at a constant speed on the straight line connecting A and B, the beat is no longer...
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    Where Does Object A Come to Rest Relative to Wagon B?

    Oh! now I can do it! Thank you :)
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    Where Does Object A Come to Rest Relative to Wagon B?

    now I get SA like you get :) This is from my wrong calculation but when find SA/B, I can't manage the answer as you can :((
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    Where Does Object A Come to Rest Relative to Wagon B?

    In block B: Did you set equation of energy like this \frac{1}{2}M(v')2=μmgSB v'=\frac{mv0}{m+M} ∴SB=\frac{mMv^{2}_{0}}{2μg(m+M)^2} and from your mentioned in #2, I get SA=v^{2}_{0}(mM+M2)/2μg(m+M)2 but when I find SA/B I can't eliminate M2 term...
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    Where Does Object A Come to Rest Relative to Wagon B?

    TSny I think I misunderstood with this problem because I think velocity of A = 0 relative to the Earth so I set final kinetic energy of A = 0. Because of this I understand that 2 masses (A and B) stick together too... What's the equation did you set?
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    Where Does Object A Come to Rest Relative to Wagon B?

    Homework Statement The attached figure below shows object A (mass,m), which is placed on a table, and wagon B (mass,M), which is in contact with the table. The top of the table and the top of the wagon are at the same height. A is made to slide on the table so that it transfers to the top of B...
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    Friction with induced coil and magnetic force

    Thank you truesearch :)) I can work through it,, Now I knew that I miss the term of induced emf by moving wire In next problem I will consider more and more carefully :)) Thanks a lot IIK*JII
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    Friction with induced coil and magnetic force

    The answer is v = \frac{EBl-μ'mgR}{(Bl)^2},, so I think I miss something
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    Friction with induced coil and magnetic force

    Homework Statement As shown in the attached figure, two rails of conducting wire,M and N, run parallel to each other on a horizontal plane and are separated by distance l. The rails are in a magnetic field of magnetic flux density B that is in the vertically upward direction. An electrically...