An incandescent bulb produces light that comes from the heating of a filament. A compact fluorescent bulb produces light when a substance is hit by electromagnetic radiation. Compact fluorescent bulbs are more efficient than incandescent bulbs.
The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic processes. Therefore, a system with lower heat emissions would be more efficient.
The second law of thermodynamics states that the total entropy of an isolated system (the thermal energy per unit temperature that is unavailable for doing useful work) can never decrease. In our context, it means that the system with the least amount of losses would be more efficient. As a conclusion the fluorescent bulb would be more efficient.
The difference between rotational motion and circular
motion is that rotational motion is the rotation of a body about it center
mass. The axis of rotation and the center mass could change. For circular
motion, the axis of rotation and the center mass does no change.
The correct answer for the question that is being presented above is this one: "b. 32 lbs." Suppose you pour one cubic foot of seawater into a light plastic bag, tie the bag closed with <span>o air bubbles inside, and lower it into the ocean via a light attached string. When the bag of seawater is completely submerged the force will be 32 lbs.</span>

So, Speed of light in Rock salt is 1/1.54 times speed of light in vacuum. Therefor Speed of light in Rock salt is less [1.94 x 10⁸m/s ] compared to speed of light in vacuum =C = 3 x 10⁸ m/s.
Answer:
The only way to increase the work output is to increase the work input. You can't get more work out of a machine than you put into it. The moving parts of a machine must use some of the work input to overcome friction. Because of friction, the work output of a machine is always less than the work input.
Explanation: