You drive your car 2 km to the gas station, 4 km to the shopping mall to let your mother off, and 4. 5 km back home. The trip takes 20 min. What is your velocity in m/s?.

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

Sound is a disturbance that travels through a medium as a

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?