A(n) 0.65 mole quantity of O2 originally at 85◦C is cooled such that it now occupies 4.0 L at 20.◦C. What is the final pressure exerted by the gas? 1. 1.1 atm 2. 6.2 atm 3. 0.27 atm 4. 3.9 atm 5. 0.92 atm 6. Not enough information is given

What is the function of the commutator in a dc motor? a. to spin the magnet b. to change direct current into alternating current c. to change alternating current into direct current d. to spin the wire coil

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)