Recent content by Arun Raja

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    Solving an Equation: x = vo t + ½ a t2

    no. But I am not sure of the correct way too. so pls help .
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    Why does voltage across the LDR decrease when its resistance increases?

    Homework Statement http://puu.sh/dzujr/dcf208c4a5.png Homework Equations Potential divider concept--> R(R+r)*E=V The Attempt at a Solution When there is low light, resistance of LDR increase to produce light. So, voltage across LDr increases and voltage across thermistor decrease-->lower...
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    Solving an Equation: x = vo t + ½ a t2

    Homework Statement http://puu.sh/dzuq5/629a29dd48.png Homework Equations x = vo t + ½ a t2 2 a x= v2 - vo2[/B]The Attempt at a Solution 1/4 d = vo t + ½ a t2[/B] multiply equation by 4, d=4 ut+ 2a t2 so I am thinking answer is 4u, but it is 2u.
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    Applying PV=constant to find pressure and volume changes

    V/T=k but how is this supposed help me answer the question? Pls provide some help. I am having my exams tmrw
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    Applying PV=constant to find pressure and volume changes

    It is a isobaric process.
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    Applying PV=constant to find pressure and volume changes

    Homework Statement http://puu.sh/c0rhe/fb6b48f890.png Homework Equations PV=constant The Attempt at a Solution I have no idea how to apply the above equation. Please help.[/B]
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    What is the Centripetal Acceleration Problem Solution?

    Homework Statement http://puu.sh/c0p5S/2fb2185acf.png Homework Equations I think a relevant eqn would be v=wr. The Attempt at a Solution I think answer is option A since Va/Vb=WRa/WRb. Is it correct? if not what is the right answer?
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    Solving for ds/dt: Is the Answer C?

    Homework Statement http://puu.sh/c0mFR/515cf5fd15.png Homework Equations ds/dt=dv The Attempt at a Solution I think answer is C by observation. Is it correct? if not what is the answer[/B]
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    How can internal energy change if no heat flows in an adiabatic process?

    Homework Statement Homework Equations Conceptual qn The Attempt at a Solution work is done in gas but how can internal energy change? there is no heat flow since it is an adiabatic process[/B]
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    Why does isothermal expansion increase pressure in this problem?

    even isothermal processes occur at same temperatures. So there is no increase in internal energy which leads to increase in entropy.
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    Why does isothermal expansion increase pressure in this problem?

    Homework Statement http://puu.sh/c09sc/b1d02302bd.png Homework Equations Conceptual question. The Attempt at a Solution The answer is isothermal expansion(D). but heat does not decrease due to isothermal process and expansion leads to lesser collision of particles on walls of container. So...
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    Understanding Amplitude and Waveforms

    Homework Statement http://puu.sh/bZQiV/43f7515806.png Homework Equations This is a conceptual conception so no equations[/B]The Attempt at a Solution I believe answer is D since it is the longest and thus can have the highest amplitude. Is it correct?[/B]
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    What is the momentum transferred in a rubber ball collision?

    Homework Statement Homework Equations p=mv[/B]The Attempt at a Solution My thoughts- Answer is C as KE is not conserved since velocity of ball has decreased. Option A also seems correct.[/B]
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    What is the Correct Concept for Solving the Stacked Blocks Problem?

    Homework Statement Homework Equations F= ma[/B]The Attempt at a Solution X does not slip. so friction exists. Friction should be equal to the force F applied so that according to Newton's 3rd law, the friction and F cancel out and X remains on Y. Is this the right concept?
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    Understanding Simple Harmonic Motion: Explained in Simple Terms

    Tension should be proportional to acceleration given by -w^2(x). Thus tension and acceleration graph should be the same. i think it is either A or D. Please help me clarify.
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