Recent content by endeavour

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    Undergrad Solving the Gravitation Doubt: What Happens When Force Disappears?

    Ironically, there is a glaring mistake on that website - one rather erroneous chemical reaction!
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    Understanding Electromotive Force: Solving Problems in Magnetic Fields

    a) EMF = dΦ/dt Φ=BA => EMF = BA/t consider in 1 second, the rod moving at speed v m/s, the area cut per second = length*v =0.4v so 2.4 = (1.2*0.4v)/1 v = 5.0 m/s b) use EMF = IR c) F = BIL F = 1.2*0.4*2 F = 0.960 N hth.
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    Understanding the Delicate Balance Between Forces in Nuclear Physics

    The question is in the attachment.. My thoughts were that between 2 protons, there's obviously going to be higher electrostatic repulsion, so a higher attractive strong force is needed (to keep the protons together), than with 2 nucleons. But the highest strong force is when separation is...
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    Electric Charge in a Magnetic Field

    Remember: F=mv²/r and F=Bqv also v=(2pi.r)/t
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    Solve Physics Problem: Coefficient of Friction on Steep Incline with Supertruck

    Resultant force = ma let friction = F. so, resolving forces parallel to the slope, using g=9.81N/kg: F = ma 1.55*10^4 - F - 1000gcos65 = 1000*3.3 F= 8054 N F=uR, where u = coefficient of friction u = F/R u = 8054/(1000*9.81) u = 0.82
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    Burning Nuts: Questions & Answers

    I see where you're coming from. But actually proteins don't really. Fats release more energy (39.4 kJ/g) than proteins (17.9 kJ/g) and carbohydrates (15.8kJ/g) - they have very long chains of -C-H bonds and have more potential to make CO2[/size] (and H2[/size]O. as oxidation produces water and...
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    LaTeX Chemical LaTeX Typesetting - Physicsforums Tutorial

    lol guys, the photosynthesis equation everyone's using is incorrect ;)
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    Burning Nuts: Questions & Answers

    Yep the oil is fat ( or triglycerides). The nut "contains" more energy (releases more energy) because chemically, it has the most potential to create C=O bonds (carbon double bond to oxygen) in CO_2, which releases the most energy (exothermic). This process in oxidation. Carbohydrates...
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    How Can Temperature Affect the Breakdown Voltage of a Semiconductor Diode?

    by voltage drop, do you mean the voltage across R gets more negative, as the breakdown voltage is approached?
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    How Can Temperature Affect the Breakdown Voltage of a Semiconductor Diode?

    Thanks very much for your help.
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    Applying Sig Figs to Complex Calculations

    I think it's about context too. If the question was about a length measurement taken (just say) and the value was 360mm, then shouldn't that should be taken to 2 sig.fig (unless they actually say it was measured to 3 sigfig)?
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    Comparing Somatic, Autonomic, Sympathetic and Parasympathetic Nervous Systems

    Easiest/best ways to describe the differences between: Somatic and autonomic nervous system -somatic has the motor neurone's cell body inside the CNS, while autonomic has its motor neurone's cell body outside the CNS, in the ganglia (2 neurones carry impulse from CNS to organ)...
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    How Can Temperature Affect the Breakdown Voltage of a Semiconductor Diode?

    The problem is an experiment has to be set up to investigate how the breakdown voltage (which occurs by a large reverse potential difference is applied to the diode, and the diode then passes a large current) of a semiconductor diode is affected by temperature. My problem is how can I vary...