Would this be 5.58 g or 5.58 kg?

What part of the ear is names after tools, such as the hammer and the anvil?

The horizontal blue line through the middle of the lens is called the optical axis. as the lamp is moved above or below the axis, keeping the horizontal distance to the center of the lens constant, how does the horizontal distance from the lens to the image change?

When flexing to a reflective style, one should be specific, brief and to the point, and maintain a fast and decisive pace?