Your neighbor paul has rented a truck with a loading ramp. the ramp is tilted upward at 35 ∘, and paul is pulling a large crate up the ramp with a rope that angles 20 ∘ above the ramp. paul pulls with a force of 350 n. (force is measured in newtons, abbreviated n.)

50.)the diagram below represents the wave fronts produced by a point source moving to the right in a uniformmedium. observers are located at points a and b.compared to the wave frequency and wavelength observed at point a, the wave observed at point b has a(1) higher frequency and a shorter wavelength(2) higher frequency and a longer wavelength(3) lower frequency and a shorter wavelength(4) lower frequency and a longer wavelength