Divide 0.0081 meters by 300 seconds and express the answer in scientific notation,

2.7 X 10⁻⁵

Explanation:

0.000027/ 300 = 0.000027

but we have to move the decimal point to the right just after the first number different to zero, in this example is number 2.

Finally, as we move the point to the right, the power is negative.

Then the result is 2.7 x 10⁻⁵

answer; (d) spontaneous processes are characterized by the overall conversion of order to disorder;

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.