(i) state three energy transfer mechanisms within a star for each mechanism, state whether it is significant in the core and in the outer regions of the sun. (ii) sketch the internal structure of a star with 0.08 mo < m < 0.5mo. state the source(s) of the energy. label the source(s) of energy and of energy transfer

the answer for apex is the lowest

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.

80cm/s.

24cm/s.

53.3cm/s.