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iron panthis is useful for many experiments in chemistry the lid of a preserving jar is looped with galvanized wire the free end of the wire is
q it is possible to have motion in the absence of a force yes it is
when the economy experiences a downfall the government knows exactly which policies will spur an economic recoveryoften policymakers fail to take the
a metal ring stand and ringsa useful ring stand and rings can be made from a flat curtain rod and the fixtures which clamp over electricbulbs to
the government uses monetary and fiscal policy to mitigate the effects of economic
can a contour map explain a cause and effect relationship among three
can you explain that a wave through the origin always has a slope of one or
a measuring jar or graduateselect several straight-sided glasses jars of assorted sizes olive bottles are very useful for the making of graduated
containers from used electric bulbsused electric light bulbs can be made into containers that will substitute for flasks beakers test tubes and same
a sensitive beam balancethe materials required for this balance contain a clothes peg a knitting needle about 12 in long two pins or needles and a
a general utility equal-arm balancemake a base about 22 cm square from wood about 2 cm thick next make two uprights from wood15 cm long by 6 cm wide
types of rectifierhalf wave rectifierthe half wave rectifier allows positive half cycle of alternating current to pass through the circuit but
precaution to minimize radiation danger 1 one should keep safe distance away from radiation emitting source2 the radiation from the reactor are
radiation hazards1 they can injure our body cells2 excessive radiation might be cause cancer3 energetic radiation penetrates inside the body and can
medicines1 iodine 131 is used for the study of thyroid glands2 radiation in low dosage can also be used for sterilizing bandages3 radio-cobalt-60 has
agriculture1 radio isotopes are used to verify the optimum amount of fertilizer for the plants2 it is used to kill bacteria and conserved food
uses of radio isotopesindustries1 radio active isotopes are used to detect leakage in pipes2 it estimates weak and tear machine tools3 it is used to
difference between fission and difference between fission and
critical massthe minimum mass of uranium required for smooth fission chain reaction is called as critical
moderationin a nuclear reactor the fast moving neutron has to be slowed down by the use of boron rods before they are able to cause further fission
nuclear reactorduring fission large amount of energy is free in the form of heat a system which is used to get controlled amount of heat energy from
chain reactorsplitting of nuclei also causes the emission of neutrons if these neutron cause further fission in the other nuclei and this process
fusion reactionin nuclear fusion light nuclei are brought together to form a relation heavier nucleus they energy free in nuclear fusion is larger
uses of radarradar is used to locate and recognize war planes and missiles to guide ships or submarine to see position of a satellite in
radarthe term radar is used for radio detection and ranging radar having of three types of devices a transmitter a receiver and indicator devices it