The human body can exhibit a wide range of resistances to current depending on the path of the current, contact area, and sweatiness of the skin. suppose the resistance across the chest from the left hand to the right hand is 1.85 ✕ 106 ω. (a) how much voltage is required to cause possible heart fibrillation in a man, which corresponds to 360 ma of direct current?

Explanation:

As we know that resistance offered by the body from left hand to right hand is given as

now the current flowing through the body is given as

now in order to find out the potential difference across the hands that is applied is given by ohm's law

V = i R

so the applied voltage across the hand must be given as above

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.