Reference no: EM134781

Question1

Prairie Dogs live in underground burrows with at least two entrances. One entrance is higher above ground and open to a stream of air when a breeze blows from any direction. A second entrance at ground level is open to almost stagnant air. How does this construction create airflow during the burrow?

Question2

Heather and Jerry are standing on a bridge 55m above a river. Heather throws a rock straight down with a speed of 15 m/s. Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Overlook air resistance. How much time elapses between first splash and second splash?

Question3

As you sit in your parked car, you glance in convex side mirror with radius of curvature R = -125cm and notice a jogger approaching. If the jogger is running at a speed of 2.50m/s, how fast is her image moving as she is 10m away?