# 1.2 Physical quantities and units

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physical quantity

a characteristic or property of an object that can be measured or calculated from other measurements

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Will the current used on the load side affect the current on the supply side.
wave is a disturbance that travels through a medium and transfer energy from one place to another without causing any permanent displacement of the medium itself
what is wave
wave is a disturbance that travels through a medium and transfer energy from one place to another without causing any permanent displacement of the medium itself
Bello
measurements of the period of a simple pendulum in an experiment are 20 oscillations for a give length of the pendulum 30.50secs
patient with a pacemaker is mistakenly being scanned for an MRI image. A 10.0-cm-long section of pacemaker wire moves at a speed of 10.0 cm/s perpendicular to the MRI unit’s magnetic field and a 20.0-mV Hall voltage is induced. What is the magnetic field strength
fundamental and derived quantities
is any thing that has weight or mass and can occupy space
explain why the earth is an exact shere
because the pull of gravity is equal on all sides
Paul
how long did sun take to rich the earth
Billy
A tennis ball is projected vertically up with a velocity of 100m/s the top of a tower 50m high. Determine the a). height reach from the ground. b). Time to reach the hmax.
100×50=5000
what are the formula and calculation
what are the formula for resistance, ohm's law, and electric current
Brianca
I=V/R and so R=V/I
Akiiza
what is gamma rays
gamma ray is an energetic ray .it does not have acharge
Merkew
what is wave
What happens to the mass of water in a pot when it cools, assuming no molecules escape or are added? Is this observable in practice? Explain.
please explain to me,coz I have no idea
Brianca
what is a magnetic field
magnetic field is the area around a magnet where the magnetic force is exerted or felt.
Paul
what is the first Faraday's law
Abba
Formula for Newton 1st law
what is physics
Physics is a way to see and solve things around us
Prajukta