Ageiger counter used in several applications over the course of a typical day produces on the average 100 counts per second. the tube is in the form of a cylinder 5 cm in diameter by 20 cm long and is filled with a mixture of 90% argon and 10% ethanol to a pressure of 0.1 atmosphere. in the geiger-muller region, each output count results from the formation of about 1010 ion-electron pairs. how long will it take for one-third of the quenching gas to be used up, thus necessitating replacement of the tube?

b.a device that inputs heat into a cool object

answer; how far out of place which the object finished relative to the starting location;

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.