Aplant worker accidentally breathes some stored gaseous tritium, a beta emitter with maximum particle energy of 0.0186 mev. the energy absorbed by the lungs, which have a total weight of l kg, is 4 x 10^-3 j. how many milli-rems dose equivalent was received?

400 milli-rems

Solution:

As per the question;

Maximum energy of particle,

Weight, w = 1 kg

Energy absorbed, E =

Now,

Equivalent dose is given by:

1 Gy = 1 J/kg

Also,

1 Gy =

Therefore,

Dose equivalent in milli-rems is given by:

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.