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... is L/v, so you need pi/(3*w) > L/v => w < pi*v/(3L). For each row in the given table, the maximum value of w (the angular speed ) is pi*v/(3L).  Just...

There's a formula for this: over level ground, range x = V²sin(2Θ)/g and so 7 m = V² * sin(40º) / 9.8 m/s² solves to V = 10.33 m ≈ 10 m/s

https://keisan.casio.com/exec/system/1224665242 So 12 hrs

...propagation speed in the medium vr is the speed of the receiver/observer vs is the speed of the source for a fixed source and observer moving away f = (c - vr / c + 0)f₀...

...that the stone to hit the water and not includes time for the sound to travel back to the top of the well to be ...distance at top of the well. Lets consider it as 0 Need x = ? x = x₀ + v₀t + ½at²...

For a river width of 0.75 km and a distance traveled...arctan(Vi/Vc) = 41.4º If you need that relative to your horizontal line, use your...of the ideal (current free) velocity equals the current speed : Θ = arcsin(12.0/13.6) = 62º upstream from...

I so wanted to answer this question. However, my answer is "Anonymous" as your post is Anonymous. There is no need for an Anonymous question in this category,

   First up... don't forget to choose a  BEST  answer... !! speed , that is tangential velocity,  v,   is  :          v =  ( 2πr ) * ( # rev )  /  t All the objects have the  same  value for   2πr,  just convert   r  to meters instead of cm before  any calculations...