Recent content by scytherz

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    Civil vs Mechanical Engineering: Seeking Professional Advice

    Hell yeah! Thanks for the advices! Yes right now I am having a extensive research on the field of mechanical engineering, the things they usually do, etc... @ Danger, yes you make sense... Just a follow up question, I want to know the PROS and CONS of being a mechanical engineer or taking up...
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    Civil vs Mechanical Engineering: Seeking Professional Advice

    Hi! I'm currently a 2nd Year Civil engineering student, and I wrote this topic for I am seeking a professional advice, actually I have doubts whether should I stay in my current course or to shift in mechanical engineering, and lately I find my course a bit boring and uninteresting (is...
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    Physics Professor Bicycles Through Air: Power Calculations

    Yeah your right! thank you! By the way there was a follow up question on that... Homework Statement If the power required to accelerate the air is 40% of the answer from the last problem due to the professor's sleek aerodynamic shape, a) what is the power required to accelerate the...
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    Finding the Force of air resistance

    yeah I got it! Thank you very much!... I didn't know It was that easy, I wasted a week trying to solve this tricky problem...
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    Finding the Force of air resistance

    thats 2610 Hp or 1 947 060 Nm and substitute to energy... I ve tried that, and still got the wrong answer, my hunch is that we should utilize the given ( the 427 cu in engine) but tried it an still got the wrong answer... btw the answer on that one is 54 mph...
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    Physics Professor Bicycles Through Air: Power Calculations

    Homework Statement A physics professor bicycles through air at a speed of v= 36 km/hr. The density of Air is 1.29 kg per m^3. the professor has a cross section of 0.5 m^2. assume all of the air the professor swept out is accelerated to v. a.) What is the mass of the air swept out by the...
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    How Fast Can a 1967 Corvette Go Using Full Power in 6 Seconds?

    Ive tried that.. but since the 427 in cu engine contains fuel to run the car, i assumed that this chemical energy will transform to kinetic energy when moving (since burning 1 L of gasoline is equal to 3.5 x10^7 j/s , so I substituted it in the formula, and still got a wrong answer... does my...
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    Power Homework: Mass & Power Calculation Problem

    Homework Statement A physics professor bicycles through air at a speed of v= 36 km/hr. The density of Air is 1.29 kg per m^3. the professor has a cross section of 0.5 m^2. assume all of the air the professor swept out is accelerated to v. a.) What is the mass of the air swept out by the...
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    How Fast Can a 1967 Corvette Go Using Full Power in 6 Seconds?

    Homework Statement A 1967 Corvette has a weight of 3020 lbs. The 427 cu-in engine was rated at 435 hp at 5400 rpm. a) If the engine used all 435 hp at 100% efficiency during acceleration, what speed would the car attain after 6 seconds? b) What is the average acceleration? (in “g”s)...
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    Problem on Conservation of energy

    Homework Statement Two blocks, A and B (mA=50 kg and mB=100 kg), are connected by a string as shown. If the blocks begin at rest, what will their speeds be after A has slid a distance d = 0.25 m? Assume the pulley and incline are frictionless. Homework Equations K= .5mv^2 P=mgh...
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    Finding the Force of air resistance

    A 1967 Corvette has a weight of 3020 lbs. The 427 cu-in engine was rated at 435 hp at 5400 rpm. a) If the engine used all 435 hp at 100% efficiency during acceleration, what speed would the car attain after 6 seconds? b) What is the average acceleration? (in “g”s). ans... a) 120 mph b)...
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