What happens when electrical energy is used to power stereo speakers? a. energy is neither lost nor gained as electrical energy is transformed into the energy of sound. b. energy is gained as electrical energy transforms into the energy of sound. c. energy is lost as electrical energy transforms into the energy of sound. d. energy is neither lost nor gained as sound energy transforms into electrical energy.

Since energy can neither be created nor destroyed and it just changes from one form to another...so... A. Energy is neither lost nor gained as electrical energy is transformed into the energy of sound.

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.