The engine of a boat (m = 1580 kg) exerts a 2200 N force northward, while the current
pushes it 1350 N eastward.
In what direction does the boat accelerate?

Taylor's experiment: 1. accurately measured the speed of light 2. locked together the phases of two light sources so that the interference pattern would not shift 3. showed that man's reaction time was much slower than the speed of light 4. showed that individual photons have wave characteristics

The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 5.6 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 10.6-kg slender bar ab.

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