Challange to quick mind (2)
PHYSICS. 1. If car go straight 12 km and come back straight 6 km. Find displacement 2. How pascal's law is used in hydraulic jick? CHEMISTRY.

challange to BIOLOGY students (6)
Describe whate phase is that? And name of this phase? And whate event occur in this phase?

Math (4)
I need hard math questions urgently, anyone ...??

For physics students (5)
it is basic formulas if you wan more than say hi in comment

Force (4)
FORCE: Force is an agent that tend to move a stoped body and stop a moving body.