The helicopter was hovering at a constant altitude and dropped a box to the waiting survivors. It took the box 3.5 seconds to reach the ground. How high was the helicopter? Round to the nearest whole number.

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?