100cm cubed of fresh water of mass 100 g is mixed with 100 cm cubed of sea water of mass 103 calculate the density of a mixture

A6.0-μf air-filled capacitor is connected across a 100-v voltage source. after the source fully charges the capacitor, the capacitor is immersed in transformer oil (of dielectric constant 4.5). how much additional charge flows from the voltage source, which remained connected during the process?

How long will a plane have to fly continuously with 1100 miles per hour in order to cover the same distance as that from earth to the next star, proxima centauri?

The formulas used to analyze the horizontal and vertical motion of projectiles launched at an angle involve the use of which function(s)?