2 points You are driving at a speed of 25 m/s when an ambulance, approaches
from behind at 45 m/s and with a siren frequency of 1,400 Hz the temperature lowers to a bitter -5°C. You hear a different frequency
from the siren before it passes you compared to after it passes you. What
is the difference in the frequencies you hear?

Awheelhas a radius of 4.8 m. howfar (path length) does a point on the circumference travel if thewheel is rotated through angles of 30°, 30 rad, and 30 rev, respectively?

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?