Recent content by ys2050

For #1, I know that the wavelength of red light is longer than the blue light #2, I drew the diagram and I'm still not getting it... Which equation do we use? Which equation do we use for #3?

I have a few questions: 1. Most CD players use laser light in the red portion of the spectrum. What changes would be required in the manufacturing of CDs if blue light were to be used? 2. A student performs Young's double-slit experiment using a slit separation of 21.6um. A screen is...

hmmm I'm not sure if I'm getting it... so in my case, the total spring did not have to exert as much force in order for the spring to get to a certain distant because...?? :confused:

Based on the equation: 1/ktot = 1/k1 + 1/k2 Why is it that the reciprocal of the total spring force is equal to the reciprocals of each spring constants?? I know how to derive the equation, but what is the physics behind it?? The total spring constant is much less than those of the two...

I need to figure out an equation that shows the relationship between the force constants of two springs that are connected together. I know that the 1/ktot = 1/k1 + 1/k2 but I have to shows all the steps to obtain this equation... I know that F = k1x1 = k2x2 = k(x1 + x2) I tried...

but in the handout, it says: " Holding the other end of the spring scale, horizontally pull it out to its radius when it was flying around in a circle. Note this reading down and calculate the tension in the string." If the spring scale does measure the tension of the string, why would you...

What is the difference between figuring out the force of tension in the string using the static and the dynamic method?? We did a lab where a toy pig was hung from the ceiling with a string and when we turned the pig on the wings moved and traveled in a circle... In the dynamic case, we just...

I pulled the pig horizontally to its radius and the spring scale showed the horizontal force. I used that and the angle to figure out the tension of the string, which is the hypotenuse. In the dynamic method, I used the formula T = mg / cos(theta) In the static method, I used T = Fc /...

we hung a toy pig from the ceiling with a string and when turned on, it traveled in a circle. We figured out the tension in the string using dynamic and static method... in dynamic we just used the measured radius and found out the angle to calculate the force of tension. in static, we...

A remote-sensing satellite travels in a circular orbit at a constant speed of 8.2x10^3m/s. Determine the altitude above Earth's surface. I thought that I should do GMm/r^2 = mv^2/r and solve for r but if I do it that way i get a wrong answer. Instead, if I do mg = mv/r^2 and find r, I...

When I try to make it fly in the opposite direction, I turn the pig around and give it a little push... in which case, it won't travel in a circle...

Yeah I think it has something to do with the wings... but I can't figure out exactly how the wings are doing that...! T.T

I have a question about the flying pig. A flying pig is just a toy pig with wings that is hung from the ceiling with a string. When you turn it on, it flies in a circle and shows concepts of conical pendulum. But it only flies in one direction. If you push the pigs in the opposite direction...

but if you spin it in opposite direction, it won't travel in a circle...;;

When you hang a pendulum from the ceiling and spin it, (conical pendulum) why does it only spin in one direction? What's the physics behind the motion and the forces of it that makes it spin in only one direction?