Afriend of yours is loudly singing a single note at 403 hz while racing toward you at 26.3 m/s on a day when the speed of sound is 340 m/s .what frequency do you hear? what frequency does your friend hear if you suddenly start singing at 403?

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

Blood pressure the total amount of blood the heart pumps in one minute 2. cardiac output the number of times your heart beats in a minute 3. dilate the amount of blood that the heart can pump in a single beat 4. heart rate the force exerted on the walls of the blood vessels by the blood that moves through them 5. stroke volume to widen or get larger in size

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.