5. A uniform beam of length 4m and
mass 20kg is supported at both ends .
A girl of mass 40kg stands on the
beam At a distance 1.5m from one of
the supports. Find the reaction at eas
Support.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o

What is a subatomic particle with a negative charge and very little mass?

Three resistors are connected in series across a 15-v power supply. if the potential drops across resistors 1 and 2 are 4.1 volts and 3.1 volts, what is the exact potential drop (in volts) across resistor 3?