A30w light bulb uses 600j of electrical energy in a certain period of time. in that time , it produces 450 j of light energy. the rest of the energy is wasted calculate the efficiency of the light bulb

You will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. (refer to the walk-through video to locate the online lab within the online textbook).

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

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.