3. When water droplets are pushed through sand, gravel and carbon filters is the water clean and ready to drink? Why or why not?

What is the momentum of a 2 kg object moving at 15 meters per second

You can decrease the resistance of a length of wire by

Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?