Infants will often smile when they hear a parent's voice. in this situation, the parents voice is considered

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

What is the single most important equation in all of physics?