Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

Get the answer to your homework problem.

Try Numerade free for 7 days

Like

Report

$\bullet$ Two tuning forks are producing sounds of wavelength34.40 $\mathrm{cm}$ and 33.94 $\mathrm{cm}$ simultaneously. How many beats doyou hear each second?

14 $\mathrm{Hz}$

Physics 101 Mechanics

Chapter 12

Mechanical Waves and Sound

Periodic Motion

Mechanical Waves

Sound and Hearing

University of Washington

Hope College

University of Winnipeg

Lectures

08:15

In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain. Humans can only hear sound waves as distinct pitches when the frequency lies between about 20 Hz and 20 kHz. Sound above 20 kHz is known as ultrasound and has different physical properties from sound below 20 kHz. Sound waves below 20 Hz are called infrasound. Different species have different hearing ranges. In terms of frequency, the range of ultrasound, infrasound and other upper limits is called the ultrasound.

04:49

In physics, a traveling wave is a wave that propogates without a constant shape, but rather one that changes shape as it moves. In other words, its shape changes as a function of time.

03:13

Two tuning forks are produ…

01:46

When two tuning forks of $…

00:51

If two tuning forks - one …

02:03

A tuning fork produces thr…

00:29

Two tuning forks have freq…

00:25

A piano tuner using a $264…

03:00

Two identical tuning forks…

00:56

Two tuning forks having fr…

01:10

Two tuning fork $A$ and $B…

West. What fraction of an iron anchors wait will be supported by buoyant force when submerged in salt water. So we have here a picture of our anchor, which is resting on the ground or the sea bottom. So there's a force from that acting on it. Its weight is acting to pull it down, and the buoyancy forces acting, they're offset the weight. So are equation of equilibrium says that the buoyancy force, plus the normal force from the sea floor, must equal the total weight of anchor you can substitute in the buoyancy force is the density of water times the volume of the total volume of the angry because it's completely submerged time gravity than we have, plus the normal force. And the way is the density of water or density of iron kinds, its volume times gravity. So I think what they're asking for is the weight minus the normal force divided by the weight as the fraction of the weight supported by a buoyant force. So we can put in our values here. Yeah, substitute in we have the way is the density of iron times its volume times gravity minus the normal force divided by the then to the of iron times its volume times grab its weight. And so from up here we can substitute in for their normal force and we wind up with This is just the density of water times the volume of the anchor times g times the oh divided by the density of iron times the volume of the anchor times D. So obviously these things cancel out and we get that the this ratio here is just the density of the water divided by the density of iron. And if we have freshwater, which I think they said had salt water in the problem so we could actually go in and we calculate that So if freshwater this ratio would be, um, 0.1 to 8 in seawater, this would be 27. So 1027 divided by seven the 800 which is the density of iron. Um, ISS zero point 13 two

View More Answers From This Book

Find Another Textbook

Numerade Educator

02:52

If we model the pore of a hypothetical ion channel spanning the membrane of …

03:01

$\bullet$ How fast (as a percentage of light speed) would a star haveto …

00:03

That's a lot of hot air! A hot-air balloonist, rising vertically with a…

03:12

$\bullet$ A radio inductor. You want the current amplitude througha $0.4…

04:15

$\bullet$ Rescue. Your friend (mass 65.0 $\mathrm{kg}$ ) is standing on the …

03:53

A 1500$\Omega$ resistor is connected in series with a 350 $\mathrm{mH}$ indu…

03:11

Two cars having equal speeds hit their brakes at the same time, but car $A$ …

04:20

. Leg raises. In a simpli- fied version of the musculature action in leg rai…

02:01

$\bullet$ Two small speakers $A$ and $B$ are driven in step at 725 $\mathrm{…

02:38

A small omnidirectional stereo speaker produces waves in all directions that…