Which of the following is a charge pump?

a. generator
b. battery
c. photocell
d. all of these

12000j is work done

close lines strong magnet less close weaker

the five characteristics of adolescence are biological growth and development, and undefined status, increased decision making, increased pressure and the search of self.

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.