Efficiency is the ratio of output work to input work, expressed as a percentage. light bulbs put out less light energy than the amount of electrical energy that is put into the bulb. the goal of the bulb is to produce light. what is the efficiency of this bulb as it works to put out light? 10% 80% 90% 100%

Astronomers discover an exoplanet (a planet of a star other than the sun) that has an orbital period of 3.87 earth years in its circular orbit around its sun, which is a star with a measured mass of 3.59 x 1030 kg. find the radius of the exoplanet's orbit.

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.