An airplane is flying west at 690 kph. The wind is blowing north at 65 kph. Add the two vectors to determine the final velocity.
A. 625 kph to the west
B. 625 kph to the north
C. 693 kph to the northwest
D. 755 kph to the northwest

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.)

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative