Waves are set up in a ripple tank. A small floating object goes up and down 5 times per second. The wave crests are 10cm apart. Find the frequency.
Find the wavelength.

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s

Describe cytokinesis in plants and animals. in animals: in plants.