Ametal sphere having an excess of +5 elementary charges has a net electric charge of what? 1 8.0 ✕ 10-19 c 1.6 ✕ 10-19 c 3.2 ✕ 1019 c 5.0 ✕ 100 c

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