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explain internal or external forcesforces can be internal or external for instance the mutual attraction of atoms within a block of wood are known as
explain newtons first lawan object will remain at rest or move with constant velocity until acted upon by a net external forcea non-accelerating
what is modern viewmodern view it objects tend to remain in their initial state force is needed to change motionresistance to alters in motion is
what is ancient viewancient view objects tend to stay if they are in motion force is needed to keep something moving this was a natural thing to
explain vectorsvectors a quantity that has a size as well as direction is known a vector so for example the wind blows with some speed and in
explain displacement xt is known as displacement and it denotes the position of a body at time if the displacement is positive then that body is to
explain thermal physics and quanmtum mechanicsthermal physics in which one studies the nature of heat and the changes that the addition of heat
classical mechanics and electromagnetismclassical mechanics which study with the motion of bodies under the action of forces this is often known as
explain thew laws of physicsit is thought that the laws of physics do not change from place to place this is why experiments carried out in different
what is phyiscsphysics is a science science works according to the scientific method the scientific method accepts only reason logic and experimental
electrical equipment in an office takes a current of 13a from a 240v supply estimate the cost per week of electricity if the equipment is used for 30
an electric kettle has a resistance of30 what current will ow when it is connected to a 240v supply find also the power rating of the kettle a
a 100v battery is linked across a resistor and causes a current of 5ma to owverify the resistance of the resistor if the voltage is now decreased
450j of energy are changed into heat in 1 minutewhat power is dissipateda current of 10a ows by a conductor and 10wis dissipatedwhat pd exists across
a force of 25kn is needed to lift a load how much work is done if the load is lifted by 500cman electromagnet exerts a force of 12n and moves a soft
q write an expression for interest rate parity under the condition of imperfect asset substitutabilityanswer r r ee - ee a where r denotes the
q assume an economy is in a liquidity trapa write an equation expressing interest rate parity under a fixed exchange rate regimeanswer liquidity trap
a what force is needed to give amass of 20kg an acceleration of 30ms2b find the accelerating force when a car having a mass of 17mg enhances its
a you have studied that plane and convex mirrors produce virtual images of objectscan they generate real image under some circumstances explainb a
q a small telescope has an objective lens of focal length 144cm and an eyepiece of focal length 60cmwhat is the magnifying power of the telescope
fungal prophylaxis in hsct a prospective randomized double- blind trial in 882 adults and children compared prophylaxis with mica fungin 50 mg iv
alternatives to prevent tuberculosis -another possible regimen for treatment of latent tb is daily rifampin alone for 4 months which may be useful in
one source of a stars energy is the fusion of two deuterons to form an alpha particle plus a gamma raya write down the nuclear equation for this
the mass of a proton and of an antiproton is 100728 urecall that the conversion of exactly 1 u into energy yields 9315 meva measure the mass used up
the radioisotope 22284po undergoes alpha decay to form an isotope of lead lead has atomic number 82 verify what the mass number of that isotope must