Find the mass and center of mass of a wire in the shape of the helix x = t, y = 7 cos(t), z = 7 sin(t), 0 ≤ t ≤ 2π, if the density at any point is equal to the square of the distance from the origin. mass incorrect: your answer is incorrect. center of mass x, y, z = incorrect: your answer is incorrect.

are there options? cause you ain’t. real specific

pecialized keyboards

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.