The top of a ladder slides down a vertical wall at a rate of 0.18 m/s. At the moment when the bottom of the ladder is 3.6 m from the wall, it slides away from the wall at a rate of 0.3 m/s. How long is the ladder

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

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

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.