Recent content by courtney1121

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    Mass of a Spring: Does it Affect the Period?

    lol ok and thanks so much for that website, it definitely helped. It was exactly what I was looking for.
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    Mass of a Spring: Does it Affect the Period?

    What does the effective mass of the spring mean?
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    Mass of a Spring: Does it Affect the Period?

    Any real spring has mass. Do you think that this mass would make the actual period of a real harmonic oscillator longer or shorter than the period predicted by the equation T= 2*pi*square root m/k. Explain your reasoning. I think it will affect the period because I am thinking that the mass...
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    Finding the Spring Constant - Help Algebra Issues

    Finding the Spring Constant -- Help! Algebra Issues! Molecular bonds can be treated like springs. From the vibrational frequencies of the bonds, one can determine the appropriate spring constants. Hydrogen, H2, has a vibrational frequency of 1.3192 X 1014Hz. Deuterium, D2, is an isotope of...
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    Will a Ping-Pong Ball Hit a Doll?

    I found the time to be .5s because v/g so the height for the ball is 5*.5 + (.5)*9.8*(.5)^2 which is 6.225m.
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    Will a Ping-Pong Ball Hit a Doll?

    or actually height would be v0t+(.5)at^2...?
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    Will a Ping-Pong Ball Hit a Doll?

    so one is in the x direction and the other is in the y direction. ball is in the x and the doll is the y direction. x = x0 + v0xt y = y0 +v0yt - 1/2gt^2 or am I looking at this wrong?
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    Will a Ping-Pong Ball Hit a Doll?

    Consider the following: You have a toy gun that shoots ping-pong balls at about 5 m/s. You aim the gun at a doll sitting on a fence. Just as you pull the trigger, a friend of yours (or so you thought) nudged the doll forward, just enough to fall off the fence. Will the ping-pong ball hit the...
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    Constant Projections: Parabolic Trajectory - Accel.

    well i don't think velocity would be constant cause velocity is magnitude and direction and the direction changes so it would change, I think. I'm pretty sure I'm considering the projectile in the zx plane so y will always be 0.
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    Projectile Problem - Time of Peak

    oh ok, so even if you shoot the firework straight up, it still needs an angle?
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    Constant Projections: Parabolic Trajectory - Accel.

    As a projectile moves along its parabolic trajectory, which of the following remain constant (ignoring air resistance, and defining the z-axis to point upward)? More than one answer may be correct! a. Its speed. b. Its velocity. c. Its x-velocity and its y-velocity. d...
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    Projectile Problem - Time of Peak

    If a fireworks rocket has an initial upward speed of 58 m/s when launched, for how long will it coast before reaching its peak? So could I use the equation t=v0z/g? When I use this I get the peak to be 5.9s. Is v0z = 58 m/s or would that be 0? Am I approaching this correctly?
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    Calculate Plane Speed from Diameter & Angle

    From using that equation I got speed to be 84.5m/s...does that sound right?
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