How are magnetic poles and electrical charges similar

Gunpowder residue is most likely to show up where on a shooters hands

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?