Agas made up of atoms escapes through a pinhole 3.16 times as fast as ar gas. write the chemical formula of the gas.

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?