Recent content by n3w ton

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    Oscillation Frequency: Horizontal vs Inclined Plane

    How does the oscillation frequency compare when being horizontal and when being on an inclined plane (assuming frictionless). I thought this: When on Horizontal surface frequency = angular frequency (w) / 2∏ Since frequency does not depend on acceleration, the frequency would remain...
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    2D Collision : Glancing Collision

    Here: SUBSTITUTION 1 INTO 2 3.63 = [vf2sin45.9° / sin25.5°] cos25.5° - vf2cos45.9° 3.63 = 1.5055[vf2 - 0.6959vf2 3.63/(1.5055-0.6959) = vf2 4.48 m/s = Vf2
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    2D Collision : Glancing Collision

    Homework Statement Two balls of equal mass m undergo a collision, the velocities of the balls make angles of 25.5° and -45.9° relative to the original direction of motion of the moving ball. (a) Draw and label a diagram to show the balls before and after the collision. Label the angles...
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    Conservation of momentum: Student walking on surfboard find resultant velocity

    Homework Statement A 55 kg student stands on a 4.6 kg surfboard moving at 2.0 m/s [E]. The student then walks with a velocity of 1.9 m/s [E] relative to the surfboard, relative to the water. Neglect Friction. Answer: 0.25 m/s[E] Homework Equations m1vi1 + m2vi2 = m1vf1 + m2vf2 The...
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    Pogo Stick Elastic Energy: Substituting Correct Variables

    Homework Statement A 35 kg child is jumping on a pogo stick. If the spring has a constant of 4945 N/m and it is compressed 25 cm, how high will the child bounce? Answer: 0.45 m Need help substituting the right variable. Homework Equations ETi= ETf Egi + Eki + Eei = Egf + Ekf + Eef...
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    Centripetal Force Lab: Exploring Frequency & Mass Effects

    Homework Statement Please go to: http://web.dsbn.edu.on.ca/~andre.huyzers/FOV1-000DC3EC/FOV1-000DC3EE/Lab%20Centripetal%20Force%20.pdf?Plugin=Loft Evaluation Question (E) Homework Equations The Attempt at a Solution Well I was thinking that as the frequency of revolution of...
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    Are the following equations inversely or directly proportional to frequency?

    Thank you very much! The square-root was getting to me :) lol.
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    Are the following equations inversely or directly proportional to frequency?

    Homework Statement Re-arrange the equation Fc=4π²mrf² to solve for frequency (f). State the relationship between frequency and (radius, mass, Fc). Homework Equations Fc=4π²mrf² The Attempt at a Solution Fc=4π²mrf² \frac{Fc}{4π²mr} = f² \sqrt{\frac{Fc}{4π²mr}} = f I have...
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    Uniform Circular Motion; Need help with deriving equations.

    Homework Statement Hi I'm doing a physics lab about uniform circular motion to measure frequency and to compare it to mass,radius and force tension. (A & B) I did (C,D, E) I need help (a) What variables are being measured / manipulated in this lab? What type of relationship is being...
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    Determine the exact value of (Square Root of Square Root)

    Determine the exact value of... (Square Root of Square Root) I was looking through my textbook and saw a interesting question, I attempted but couldn't get it. (The Answer in Back of Text Book Was Different From Mine..) Question Determine the exact value of... √10+√10+√10... I...
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    Finding the Domain and Range of a Quadratic Function

    Question: Ryan is trying to hit a golf ball over a tree that is 18m above the ground. The height of the ball is modeled by the function h(t)= -5t2 + 20t, where t is the time in seconds. Explain the domain and range of the function. Will the ball go over the tree? This is grade 11 review and I...
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    Sources Of Error: closed air column

    Instrument used: -Meter Stick -Resonant Apparatus (closed air column) -1024Hz tuning Fork We got a closed air colum (provided by teacher), and we strung the 1024 hz tuning fork with a mallet close to the air column, we pulled the 'plunger' inside the closed air column to find the FIRST resonant...
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    Sources Of Error: closed air column

    The percent margin was 10%, and yes 2 sig digs were used for all measurements. Though the mathematical view to this lab is not such a deal. I am trying to think of possible sources of error that may have been done during the experiment to prevent my getting my 'desired value'
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    Sources Of Error: closed air column

    yes the teacher said these results are fine, now I need to find a possible source of error that may have 'decreased' the speed Also could a change in temperature may have affected the speed of sound? (even though I did not need temp. to find the experimental speed)?[the percentage error...
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    What effect the speed of sound?

    I know that temperature effects the speed of sound. Can this also effect the speed of sound? -Frequency : high or low? -Gas type : if its traveling through oxygen or helium ? How would they compare? Does their mass play a part and heat capacity? My attempt: I think the gas type will...
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