An ideal gas has a density of 1.75 kg/m3 at a gauge pressure of 160 kpa. what must be the gauge pressure if a density of 1.0 kg/m3 is desired at the same temperature?

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

In the circuit shown below, with each bulb holding a resistance of 60 ohms, how many amps of current are flowing? express your number as a decimal.