If the lattice constant of silicon is 5.43 å, calculate ( a ) the distance from the center of one silicon atom to the center of its nearest neighbor, ( b ) the number density of silicon atoms (#/cm 3 ), and ( c ) the mass density (g/cm 3 ) of silicon

the closer the planet is to the sun, the larger the gravity

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.

the components of a vector are the parts of the vectors that are to each other.

b perpendicular