A simple string light produces 10 J of light energy each second. What is the efficiency of the light bulb if it uses up 200 J each second?

Which sound characteristic is not affected by the relative motion of an object

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=

Which is the most accurate name for the covalent compound p2o3?