CONCAVE MIRROR PROBLEM
A spherical, concave shaving mirror has a radius of curvature of 32.0 cm. (a) What is the
magnification of a persons face when it is 12.0 cm to the left of the vertex of the mirror? (b) Where is
the image? Is the image real or virtu
INSTRUMENTS FOR MEASURING PRESSURE
a scientific instrument used in meteorology to measure atmospheric pressure.
Pressure tendency can forecast short term changes in the weather. Numerous
measurements of air pressure are used within surface weath
In a conductor, electrons are bound very loosely and are free
to move around. These so-called free electrons can move
freely through the material and respond to nearby positive and
negative charges. Conductors have low resistance and transfer
a simple container for holding, mixing and heating liquids.
an apparatus or container for measuring the heat
generated by a chemical reaction, change of state, or
formation of a solution.
a simple mechanical device for creati
MECHANISMS OF HEAT TRANSFER
1. CONDUCTION is a transfer of heat within materials without bulk in motion of the materials. The
heat current Qk depends on the Area A through which the heat flows, the length b of the heat-flow path,
the temperature differenc
is one aspect of the combined electromagnetic force. It refers to
physical phenomena arising from the force caused by magnets, objects that produce fields
that attract or repel other objects.
SOURCES OF MAGNETISM
1. Electric current- is a flow
TEMPERATURE MEASUREMENT DEVICES
1. THERMOMETER the oldest type of device for measuring temperature or temperature gradient. A
thermometer has two important elements: the temperature sensor in which some physical change
occurs with temperature, plus some m
Acoustical engineering (also known as acoustic engineering) is the branch
of engineering dealing with sound and vibration. It is the application of acoustics, the
science of sound and vibration, in technology. Acoustical engineers are