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the stress at which the specimen breaks or reptures ultimately is known as ultimate strength we also called this tensile strength
the substances which can be stretched to big values of strain are known as elastomers eg elastic tissue of aorta the main artery carrying blood from
hookes law is valid for only little deformation hookes principle describes that the extension produced in the wire is directly proportional to the
elastic limit is the upper limit of deforming force up to which if deforming force is swap the object regains its real form totally and after that
when deforming forces are applied to a body there is a change in the size of the body the object is known as strained or deformed the ratio of change
stress is measured by the deforming force per unit normal areastresses set up in an object due to of the action of forces can be divided into three
an object which does not get its actual configuration at all on the removal of deforming force though short the deforming force can be is a perfectly
a body which gets its real configuration immediately and completely after the removal of deforming force from it is called as perfectly elastic body
why do we need degenerate semiconductor to fabricate a laser
the characteristic of a body by virtue of which the body takes its real configuration when external deforming forces are removed is called as
if a force applied on a body causes a alteration in the normal positions of the molecules of the body resulting in a alteration in the configuration
deformation in a real body due to application of forcethe idea of a hard body where the constituent molecules are fixed with respect to each other is
the free surface of a liquid always has a tendency to contract and possess minimum surface area if we want to enhance the surface area of the liquid
i on the average particles are separated by a distance of the order of 10-10 m and exert a force of attraction of the order of 10-11 n on each
i lead balls are spherical in shapeii rain leaves and a globule of mercury placed on glass plate are sphericaliii hair of shaving painting brush
there are six properties of surface tension- normal 0 false false false en-in x-none x-none microsoftinternetexplorer4
surface tension can be explained in given possible waysi the property of a liquid on account of which it tends to keep minimum number of
it is found that when a liquid is free from the external forces it always gets the shape of a spherical drop it is due to for a needed mass a sphere
the intermolecular forces f of attraction can be described as given1 cohesion the force of attraction among molecules of the same substance
when two molecules approach each other the charges in each are disturbed and redistributed in a fashion that the average distance among the unlike
when a spherical body goes by a viscous fluid it feels a viscous force the value of the viscous force increases with the enhance in speed of the
the property of liquids or gases by virtue of which a backward dragging force viscous drag acts tangentially on the layers of the liquid in motion
although it needs not concern us further we also consider that the flow is irrotational to check for this property let a tiny grain of dust goes with
viscosity in fluids is the analog of friction in solids both are methods by which the kinetic energy of moving bodies can be changed into thermal
it explains that when an object is immersed partly or completely in a liquid it loses in weight similar to the weight of the liquid displaced by