Posted by admin on Oct 24, 2021 in Physics | 0 comments
★ In this disease the walls of the coronary arteries are gradually
damaged by deposits of fats and cholesterol (plaque). These are
laid down in the artery wall.
★ The wall becomes stiff which is why the term ‘hardening of the
arteries’ is sometimes used to describe this disease. The medical
term meaning ‘hardening of the arteries’ is atherosclerosis.
★ Although CHD is called a disease, it is probably a natural process
of ageing. However, it progresses more slowly in women and
some people develop
Posted by admin on Dec 16, 2019 in Physics | 0 comments
Q # 1. The
potential is constant throughout a given region of space. Is the electric field
zero or non zero in
this region?
Explain.
Ans. The electric
field intensity is described by the relation:
According to the relation, the
electric field is negative gradient of electric potential. If the electric
potential is constant throughout
given region of space, then change in electric potential , hence .
Q # 2. Suppose
that you follow an electric field line due to a positive point charge. Do
electric field
Posted by admin on Dec 13, 2019 in Physics | 0 comments
ESS
TEST 1 – DEFINITIONS:
·Open
system: system that exchanges ENERGY and MATTER with
the outside
·Closed
system: system that exchanges only ENERGY with the
outside
·Isolated
system: system that doesn’t exchange anything with
the outside
·Transfer:
movement of energy from one place to another
·Transformation:
when the energy changes from one form to another
·1st
Law of Thermodynamics: energy cannot be created or
destroyed, only changes from one form to another
·2nd
Law of Thermodynamics: entropy
Read More
Posted by admin on Dec 10, 2019 in Physics | 0 comments
A 5.0-kg object slides down a surface
inclined at an angle of 30o from the horizontal. Friction may be neglected. The total
distance moved by the object along the plane is 10 meters. The work done on the
object by the normal force exerted on the object by the surface is most nearly
·0 kJ
An object moves halfway around a circle
of radius R. An inward radial force of magnitude F is
The work done on the object by the radial force being exerted on it is
·zero
A person exerts a constant force
Read More
Posted by admin on Oct 24, 2019 in Physics | 0 comments
2.4. Market profitability analysis. According to Porter (1985), the attractiveness of a market or an industry is measured by the long-term return on investment of the average firm. This in turn depends on five factors that influence profitability: the intensity of competition, the existence of potential competitors who will enter if profits are high, substitute products that will attract customers if prices become high, the bargaining power of customers and suppliers. Competitors: The intensity
Posted by admin on Jun 13, 2018 in Physics | 0 comments
Rational Choice Perspective
• What does it mean when a decision is rational?
• Someone weighs the costs and benefits of engaging in some
behavior and when the benefits outweigh the costs, we engage in
said behavior.• f(U) = individuals getting the most out of a situation with
the least effort.
Assumptions of Rational Choice Perspective
• An individual has precise information about exactly what
will occur under any choice made.
• An individual has the cognitive ability to weigh every
choice
Read More
