Saturday
May 25, 2013

# Posts by Alan

Total # Posts: 279

Physics
531684.027J

AP PHYSICS
In a Young's double-slit experiment, the angle that locates the second-order bright fringe is 3.0°. The slit separation is 4.8 10-5 m. What is the wavelength of the light?

Physics
At t=0, a wave disturbance has the waveform that is shown in a figure. The wave has a velocity of 500.0 m/s to the left. What's the values for k and ω if the wave equation is to be written in the form: y(x,t)=A cos(kx±ωt+φo). What is the value for k, ...

Physics
Thanks.

Physics
Two waves are combined to form this standing wave equation of y(x,t) = (3 mm)sin[x/(2 m]cos[(100 rad/s)t] a. What's the amplitude of the right moving wave and left moving wave? b. What's the wavelength of the right moving wave and left moving wave? c. What's the ve...

AP Physics
At a height of 5 meters above the surface of a freshwater lake, a sound pulse is generated. The echo from the bottom of the lake returns to the point of origin 0.140 s later. The air and water temperatures are 20°C. How deep is the lake?

Science Physics
A rubber ball of mass m1= 10kg is moving to the right with speed v1= 10m/s. it collides elastically with another ball of mass m2= 50kg, which is sitting at rest. m2 is larger than m1, what are the speeds of the balls, v1 and v2 after the collision?

writing paper for political science
Ok then I will start at that point.

writing paper for political science
Since it only wants recent history I gather then I don't need to go back to far ago. So I should just stick to the most recent events? Or should I start with the korean war? Would it be wise to mention the Korean war briefly if it is important to the current events?

writing paper for political science
Thanks of the responses. I came up with the country in order to do on the conflict with North Korea. Yeah I could use a tip on researching what about the conflict I should focus on. I got a bit overwhelmed. and I also was lost on how to cite sources into a paper with footnotes...

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