When you whisper, you produce a 10-db sound.
a. when you speak quietly, your voice sounds twice as loud as a whisper. how many decibels is this?
b. when you speak normally, your voice sounds 4 times as loud as a whisper. how many decibels is this?
c. when you yell, your voice sounds 8 times as loud as a whisper. how many decibels is this?

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