A fire truck carries a speed of 100 km/h and its siren sounds at a frequency of 900 Hz; what apparent frequency does an observer hear when he sees him approaching?

B) as the temperature increases, the kinetic energy of the particles increases.|-/

Depotion can i think

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.