A student lifts a textbook 2 meters using 30 newtons of force in a time of 3 seconds. How much power was used?

How much force must a locomotive exert on a 12840-kg boxcar to make it accelerate forward at 0.490 m/s2?

The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.