Science (physics)

posted by .

You watch a distant woman driving nails into her front porch at a regular rate of 1 stroke per second. You hear the sound of the blows exactly synchronized with the blows you see. And then you hear two more blows after you see her stop hammering. How far away is she?

It takes the sound two seconds (the elapsed time between strokes 2 apart) to reach the listener. Multiply that time by the speed of sound to get the distance.

Thank You!!!!!

Similar Questions

1. math

you see a distant flash of light and then you hear a thunder clap 2 seconds later. the sound of thunder moves at 343 miles per second how far away is the lighting?
2. Physics

You watch a distant woman driving nails into her front porch at a regular rate of 1 stroke per second. You hear the sound of the blows exactly synchronized with the blows you see. And then you hear 1 more blows after you see her stop …
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 …
4. Physics

a ship coming into port blows its whistle, you see its steam 1.86 seconds before you hear the sound. How far away is the ship if the air temperature is 10 degrees Celsius?
5. physics

You are moving at 120 km/h toward a stationary train. The train blows its 400-Hz whistle. Take the speed of sound to be 340 m/s. What frequency do you hear?
6. Physics

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 3.00 m from speaker A …
7. Physics

Humans can hear sound frequencies ranging from about 20-20000 Hz. What is the shortest wavelength humans can hear (assuming sound travels at 343m/s)
8. Physics

You drop a rock into a deep well. You can't see the bottom of the well but you can hear the impact after T seconds. Suppose the speed of sound is c feet per second and the depth of the falling rock at time t is gt^2/2 feet. Compute …
9. AP physics (simple experiment question)

the 440Hz and the 441 Hz tone bars are to be placed horizontally on stable surface. strike both tone bars with the hammer. 10. what do you hear?
10. Physics

You are sitting on a train that is about to drive into a tunnel that is at the base of a large cliff. Just before entering the tunnel, the train blows its whistle, which has a frequency of 600 Hz. (a) What frequency do you hear from …

More Similar Questions