A police car is moving to the left at 34m/sec while its siren is emitting a 600Hz tone. What tone would you hear if you were parked along side the road

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?