PROBLEMS : A cube of wood floats in oil with a relative density of 0,78 so that half of the cube is out of the oil. The mass of 4.1 the cube is 2 kg. (a) Determine the dimensions of the cube. [0,172 m] (b) To what depth will a 3 kg cube of the same wood sink in sea water with a density of 1 025 kg/m³. [0,075 m] (c) Determine the mass to be added to a 6 kg block of the" same wood so that the block will sink in sea water. [9,765 kg]

PROBLEMS : A cube of wood floats in oil with a relative density of 0,78 so that half of the cube is out of the oil. The mass of 4.1 the cube is 2 kg. (a) Determine the dimensions of the cube. [0,172 m] (b) To what depth will a 3 kg cube of the same wood sink in sea water with a density of 1 025 kg/m³. [0,075 m] (c) Determine the mass to be added to a 6 kg block of the" same wood so that the block will sink in sea water. [9,765 kg]

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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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

74
PROBLEMS :
A cube of wood floats in oil with a relative density of 0,78
so that half of the cube is out of the
oil. The mass of
the cube is 2 kg.
(a)
Determine the dimensions of the cube.
[0,172 m]
(b)
To what depth will a 3 kg cube of the same wood sink
in sea water with a density of 1 025 kg/m³ .
[0,075 m]
(c) Determine the mass to be added to a 6 kg block of the"
same wood so that the block will sink in sea water.
[9,765- kg]

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