Find the weight of the hanging mass when the spring, with spring constant 16.5kN/m , has been stretched 12.3cm . The tension in rod BD is 3600 N . Recall that the pulley is massless.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?