Answered: 3-43 The 500-kg load on the hydraulic…

3-43 The 500-kg load on the hydraulic lift shown in Fig. P3-43 is to be raised by pouring oil (p = 780 kg/m') into a thin tube. Determine how high h should be in order to hegin to raise the weight.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

i need the answer quickly

SG = 11
arment, as sIo
1:0Y IT0
unknown de
3G
thes 00000 zain IQ
this effect. Based on the final fluid heights shown on the fig-
ure, determine the density of the fluid added. Assume the liq-
uid does not mix with water.
Mereury
FIGURE P3-36
2_54498806432...
>
107
CHAPTER 3
the two arms is 32 in, determine the pressure difference
between the two tanks. The densities of oil and mercury are
45 Ibm/ft' and 848 Ibm/ft', respectively.
Unknown
liquid
3-45 Pressure is often given in terms of a liquid column
and is expressed as "pressure head." Express the standard
atmospheric pressure in terms of (a) mercury (SG - 13.6),
(b) water (SG = 1.0), and (c) glycerin (SG = 1.26) columns.
Explain why we usually use mercury in manometers.
95 cm
WATER
3-46 A simple experiment has long been used to demon-
strate how negative pressure prevents water from being
spilled out of an inverted glass. A glass that is fully filled by
water and covered with a thin paper is inverted, as shown in
Fig. P3-46. Determine the pressure at the bottom of the
glass, and explain why water does not fall out.
50 cm
FIGURE P3-42
3-43 The 500-kg load on the hydraulic lift shown in Fig.
P3-43 is to be raised by pouring oil (p = 780 kg/m') into a
thin tube. Determine how high h should be in order to begin
to raise the weight.
Glass
10 cm
Water
LOAD
500 kg
A piece
of paper
1.2 m
I cm
FIGURE P3-46
3-47 Two chambers with the same fluid at their base are
separated by a piston whose weight is 25 N, as shown in Fig.
P3-47. Calculate the gage pressures in chambers A and B.
FIGURE P3-43
Piston
3-44E Two oil tanks are connected to each other through a
manometer. If the difference between the mercury levels in
B
Air
Air
Oil
Oil
50 cm
10 in
30 cm
25 cm
30 cm
32 in
Water
90 ст
Mercury
FIGURE P3-44E
FIGURE P3-47
108
FLUID MECHANICS
8 Consider a double-fluid manometer attached to an air
shown in Fig. P3-48, If the specific gravity of one fluid
3.55, determine the specific gravity of the other fluid for
indicated absolute pressure of air. Take the atmospheric
3-50 Consider the system shown in Fig. P3-50. If a change
of 0.7 kPa in the pressure of air causes the brine-mercury
interface in the right column to drop by 5 mm in the brine
level in the right column while the pressure in the brine pipe
remains constant, determine the ratio of AJA,.
sure to be 100 kPa. Answer: 5.0
Air
Air
(P- 76 kPa
40 cm
Brine
pipe
SG =11
SG
Water
22 cm
Area, A

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