Find the mass and center of mass of a wire in the shape of the helix x = t, y = 5 cos(t), z = 5 sin(t), 0 ≤ t ≤ 2π, if the density at any point is equal to the square of the distance from the origin.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas