Recent content by ~ak~

a) Upwards the acceleration is gravity and downwards the acceleration is gravity...the initial veloicty may be positive but the acceleration is not, once the ball is hit, it has negative acceleration.

So he (big bird) is standing on a rope and has a force straightdown in gravity, there are 2 forces of Tension, so try drawing the free body diagram (hint: the tension forces form a V and also break the tension forces into vectors after) Then imagine a line going through the center of big bird...

thanks a lot redbelly...i can't believe i missed that, but i do have another question regarding this question. I can see that the 2 sources are out of phase but the only explanation that I can give is that 2 in-phase sources emit circular or spherical waves and these 2 dont. Is that correct?

Homework Statement The figure shows the circular wave fronts emitted by two wave sources. Make a table with rows labeled P, Q, and R and columns labeled r1, r2, \Deltar, and C/D. Fill in the table for points P, Q, and R, giving the distances as multiples of \lambda and indicating, with a...