Two ships sail between new york and london. one makes the round trip in 12 days, the other in 16 days. they both leave london today. in how many days will both ships leave london together again?

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

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.