What does fissure and conduit have in common?

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

The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.

Are formed where bumps from two surfaces come into contact ?