Using a simple machine, a student is able to lift a 500n weight by applying only 100n. what is the mechanical advantage of the simple machine? a) 0.2 b) 1 c) 5 d) 5

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8

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.)

Why is metal often used for cooking pan?