Two people hear the 1700 hz siren of an ambulance. one person is in front and the other person is behind the ambulance. if the ambulance is travelling at 120 km/h, what is the difference in frequencies heard by the two people? the speed of sound is 333 m/s.

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final