# health

What action makes the sound of the heart beating?

Answer : lab dub .Is it right?

1. 👍 0
2. 👎 0
3. 👁 242
1. No. Watch and listen to this site.

http://www.nhlbi.nih.gov/health/dci/Diseases/hhw/hhw_pumping.html

1. 👍 0
2. 👎 0
2. Closing of valves

1. 👍 0
2. 👎 0
3. Right.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Physics waves- help please

A police officer with good ears hears an approaching motorcycle. The engine sound he eats as the bike approached is 195 Hz. a) Is the actual sound the bike makes higher or lower in pitch? b) After the bike passes he hears 147 Hz

asked by Liz on April 22, 2014
2. ### science

On a hot summer day (30 degrees Celsius), a pesky little mosquito produced its warning sound near your ear. The sound is produced by the beating of its wings at a rate of about 600 wings beats per second. What is the frequency in

asked by trina on July 26, 2013
3. ### physics help

Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s. If you are 3.00m from speaker A

asked by Anonymous on April 19, 2010
4. ### Vibration and Waves

1. A girl on a playground swing makes a complete to-and-fro swing each 2 seconds. The frequency of swing is 1. (0.5 hertz) 2. (1hertz) (ANSWER) 3. (2 hertz) And the period is (FROM THE QUESTION BEFORE) 1. (0.5 seconds) (ANSWER) 2.

asked by Sam on January 24, 2010
5. ### English

Read the following passage "I don't know anything," he said, "except that I'm beginning to be sorry we bought that room for the children. If children are neurotic at all, a room like that -" "It's supposed to help them work off

asked by Erin on May 2, 2016
1. ### physics

Factory Worker A is exposed to a sound of a constant intensity of 6.30 × 10–4 W m–2 at a distance of 1.00 m from a noisy machine. The frequency of the sound is 4.00 kHz. (a) What is the sound level in decibels (dB) of this

asked by nancy on June 12, 2011
2. ### Physical Science

On a hot summer day (30 degrees Celcius), a pesky little mosquito produced its warning sound near your ear. The sound is produced by the beating of its wings at a rate of about 600 wing beats per second. What is the frequency in

3. ### science

an adult male's heart pumps about 2.8 million liters of blood a year. It his heart beats 70 times a minute, how much blood does his heart pump with each heart?

asked by kimberly on April 7, 2008

13. What reason does the narrator of “The Tell-Tale Heart” give for killing the old man? A. He disliked the old man’s vulture-like eye. B. The old man was very unkind to him. C. He was insane and couldn’t control himself.

asked by Tyree McCoy on June 3, 2008
5. ### Science

Fill in the blank... 1. ------ digestion occurs in the small intestine through the action of enzymes. 2. ------ can cause infections by injecting the DNA or RNA into hosts 3. The human immune system produces ------- in response to

asked by Just a friend ;-) on November 14, 2014
6. ### Human Development

Jed was born with a congenital heart defect that results in a weak pulse. His mother is constantly worried about his health. Which of the following is the most sound basis for her concern? A. The weakened heart may not provide

asked by Diana on October 28, 2018