Aship sails a distance of 600 km at a speed 20 km/h: for what amount of time was the ship sailing? is this a scalar or vector quantity?

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?

Definition: this is the weighted average of all of the isotopes of an element.