new doc 2018-04-08 12.35 - images.static-collegedunia.com · new doc 2018-04-08 12.35.10 author:...
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![Page 1: new doc 2018-04-08 12.35 - images.static-collegedunia.com · new doc 2018-04-08 12.35.10 Author: CamScanner Subject: new doc 2018-04-08 12.35.10 Created Date: 4/8/2018 1:54:29 PM](https://reader033.vdocuments.site/reader033/viewer/2022051812/602c92811e1ac0612c571888/html5/thumbnails/1.jpg)
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87.
88.»
A SOlid s h p ere of radi material of bulk us r tnade of a soft
b modulus K. 89.
y a liquid . IS surroundedThe mass of a hydrogen molecul e is3.32 x 10- 27 kg. If 1023 hydroge n
molecules strike, per second, a fixed wallof area 2 cm2 at an angle of 45° to the
normal, and rebound elastically with aspeed of HP m/ s, then the pressure on the
wall is nearly : ·
in a cylindri al massless pisto f c container. An ° area a fl surfac e of the Ii .
oats on thequid, covering tir" section of cylindri en e crosscal container Wh mass m is 1 · en a
. p aced on the surface of thepISton to compress the Ii "d th d . qui , e fractionalecrement in th . e radius of the sphere,
(�}is:
(1) Ka
3mg
t?/ mg 7 3Ka
(3)
c · 60 1 gth is clamped
A granite rod of cm en
at its middle point and is set.
in�o
. . The density ofloncntudinal vibrations.
0-"-� I 3 and its Young s
granite is 2.7 x hr kg m ill b · 10 p What w e
modulus is 9.27 x 10 a. f the
the fundamental frequency o
. . ns?
longitudinal vibratio
,, (1) 2.5 kHz
(2) 10 kHz
(3) 7.5 kHz
o,{ 4.70x103 N/m2
(2) 2.35 x 102 N/m2 ·(3) 4.7ox102 N/m2
(4) 2.35 x 103 N/m2
99,," Seven identical circular planar disks, eachof mass M and radius R are weldedsymmetrically as shown. The moment ofinertia of the arrangement about the axisnormal to the plane and passing throughthe point P is
•
n1a
I .
(1)55MR22
fJ¥' �3
MR2 .
2
(3)181
MR-2
2
(4)19MR2
2
-oOo-
� 5kHz
E FOR ROUGH WORKsrAC
C/Page 19