Recent content by sugarntwiligh

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Does gravitational acceleration have any effect on the frequency of a standing wave? I suppose it does-it probably affects the speed of the wave by hindering wavelength. So, if we went to the moon, and the gravity was considerably less on Earth, would the frequency of a standing wave be...

Yes it does produce the same force no matter what displacement is. Where did I use potential energy? I still don't understand how my equation is wrong...

How do I find the coefficient of kinetic friction for a pulley? F=mueN If a mass of 0.019 kg overcomes the friction in a pulley, is this mue? Normal force would be 0.20 kg * 9.8? But it can't be mue, because I am asked to find mue in the question.

Homework Statement A 65 kg trampoline artist jumps vertically upward from the top of a platform with a speed of 5.0 m/s. (Ignore small changes in gravitational potential energy.) a) How fast is he going as he lands on the trampoline, 3.0 m below? ANS: 9.2m/s NOTE: I understand how to get...

So, (v_1) = (v_2) + (v_2 * 0.5) = 1.5 (v_2) and, if I substitute KE_1 and KE_2 into the equation, I get KE_1=2.25KE_2. OMG THANK YOU!

Homework Statement If the speed of a car is increased by 50%, by what factor will its minimum braking distance be increased, assuming all else is the same? Ignore the driver's reaction time. Homework Equations .5(2m)(v1+5.0)^2 = .5m(v2+5.0)^2 I know the answer is 2.25 and is...

Oh ok I got it now. Since its A-C, I just take my C values and times them by -1. So now I have, C=-46.8(-1)=46.8 (y) C=0 (x) And then I take the values Rx and Ry: Rx: 52.98 Ry: 74.97 And plug in the formula: squareroot(52.98^2+74.97^2)=91.8 And I get my angle...

Homework Statement A train traveling at a constant speed rounds a curve of radius 200 m. A chandelier suspended from the ceiling swings out to an angle of 17.0° throughout the turn. What is the speed of the train? I am confused about the orientation of the chandelier to the turn and how...

Determine the vector A - C, given the vectors A and C in Fig. 3-35 (A = 60.0). Magnitude:_____ Direction:____ ° (from the positive x axis)

Just Tell Me If Its "Doable" (Vectors) Here's the problem: Give magnitude and direction from the positive x axis, given A=60. Use the following picture: http://www.webassign.net/giancoli5/3_35alt.gif I know how to do vectors... Ax: 60cos(28)=52.98 Ay: 60sin(28)=28.17 Cx: 0 Cy...

Ohhhhhhhhh I get it! Thanks!

I didn't use any value of x in my equation. But I am still confused about why its wrong, because sin(24.5)=(9.8m)/(ma). Where mg is the opposite and ma is the hypotenuse. And then solving for a gives me the same answer. My answer would make more sense if I did 9.8sin(24.5)=4.06, and I think...

Homework Statement The block shown in Fig. 4-48 lies on a smooth plane tilted at an angle θ = 24.5° to the horizontal. Ignore friction. http://www.webassign.net/giancoli5/4_48.gif (visit this site for picture) (a) Determine the acceleration of the block as it slides down the plane...

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