Answer: Option B Since water will naturally reach 40m high from the bottom of the apartment, you only need to pump the water up by a...

For Combined Science Physics Olevel, when constructing vector diagram, a method called  Parallelogram Method is commonly used....

Double-insulated appliances are common around us. The air purifiers in our classroom are one good example. In these appliances, only two...

Solutions: Option B

These two questions are actually the same. Q23 is from 2010 Pure Physics P1 while Q11 is from 2014 Sci Physics P1. Take a look at these 2...

Density is the mass per unit volume . Common units for density are g/cm3 or kg/m3 . SI unit is kg/m3 . Density of a pure substance is...