nowledge control1 D=2 cm diameter and I = 2 m long copper rod is lengthened by force F = 3500N for Al = 0.2 mm. Calculate Young's modulus of brass.2 Velocity of blood flow in capillaries is v = 0.8 mm/s, in aorta is vz = 40 cm/s. Howmany times is the cross-sectional area of the capillaries larger than the area of theaorta?3 Differential equation of harmonic oscillator has the next form:0.3dt?+ 2.7r = 0What is period and frequency of this oscillation?4 How many seconds does a wave take to cross the 25 meters pool? The wave has afrequency of 2.5 Hz and its wavelength is 0.4 m. What is the speed of the wave?5 Calculate pressure that corresponds to rustling foliage and rock concert. Intensityof rustling foliage is I¡ =10-10 W/m², intensity of sound on rock concert is I, =0.1 W/m².k 6 Suppose you send a short ultrasound pulse into the body at t = 0, and observeechoes at t = 43, 67, and 114 us. How far from the source are the three tissue bound-aries? Assume c = 1540 m/s in each tissue. Draw a line corresponding to the x-axis(r = 0 is the source location), and draw a dot at the position corresponding to cachboundary.k 7 What is the equation of harmonic oscillation, if amplitude of acceleration is amar =50 cm/sec", frequency of oscillation is f = 0.5 Hz, initial displacement of pendulumfrom the equilibrium position is rospeed).0 mm. Calculate amplitude of speed (maximal8881475DO761716578.9.Y10KEGH PKL10MJ.BTO

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nowledge control 1 D=2 cm diameter and I = 2 m long copper rod is lengthened by force F = 3500 N for Al = 0.2 mm. Calculate Young's modulus of brass. %3D %3D

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).

Question

nowledge control
1 D=2 cm diameter and I = 2 m long copper rod is lengthened by force F = 3500
N for Al = 0.2 mm. Calculate Young's modulus of brass.
2 Velocity of blood flow in capillaries is v = 0.8 mm/s, in aorta is vz = 40 cm/s. How
many times is the cross-sectional area of the capillaries larger than the area of the
aorta?
3 Differential equation of harmonic oscillator has the next form:
0.3
dt?
+ 2.7r = 0
What is period and frequency of this oscillation?
4 How many seconds does a wave take to cross the 25 meters pool? The wave has a
frequency of 2.5 Hz and its wavelength is 0.4 m. What is the speed of the wave?
5 Calculate pressure that corresponds to rustling foliage and rock concert. Intensity
of rustling foliage is I¡ =10-10 W/m², intensity of sound on rock concert is I, =
0.1 W/m².
k 6 Suppose you send a short ultrasound pulse into the body at t = 0, and observe
echoes at t = 43, 67, and 114 us. How far from the source are the three tissue bound-
aries? Assume c = 1540 m/s in each tissue. Draw a line corresponding to the x-axis
(r = 0 is the source location), and draw a dot at the position corresponding to cach
boundary.
k 7 What is the equation of harmonic oscillation, if amplitude of acceleration is amar =
50 cm/sec", frequency of oscillation is f = 0.5 Hz, initial displacement of pendulum
from the equilibrium position is ro
speed).
0 mm. Calculate amplitude of speed (maximal
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9.
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K
L
10
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J.
B
TO

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