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explain the energy and power in circuitselectrical power dissipated in a circuit or a single circuit element can be calculated usingp i v
what is the ohm lawohm discovered that the amount of current was directly proportional to the voltage more voltage gives more current and inversely
what is the static electricityhave you ever had your hair stand on end after rubbing a balloon on your hair before a birthday partyyou have probably
explain the transmission of heattransmission of heat movement of heat from the hotter item to the colder item can be brought about three ways by
explain the conservation of momentumin a collision energy is not all time conserved if not the collision is totally elastic all stored energy is
define the momentum and impulsemomentum p is a measure of a cars motion p m v where p is momentum in kg-ms m is mass in kilograms and v
what is powerpower is how fast work is done or energy is used example remember that cheeseburger 14 pound i lifted up one meter to do one
what is frictionwhen we think about friction there is one more place for energy to go - heat when you push a book across a table does the energy of
explain weightlessnesswhen can you feel weightless there are two basic ways you can be far enough away from all large objects in the universe that
explain newtons third law - linear motionstating that a force is just a push or a pull is a bit of a simplification if we exert a push or a pull
explain newton second law - linear motionif objects only followed newtons first law then everything would be traveling in straight lines at a
explain newtons first lawin 1665 at the age of 23 newton developed his famous laws of motion they are commonly known as newtons first second and
explain the air resistanceif you drop a feather and a cannonball at the same time from the same height which will hit the ground first the cannonball
explain buoyancy in airthe same buoyancy happens in air this is how hot air balloons fly by heating the air and lowering the density of the air in
explain scalars and vectorsthis is one of the harder ideas to get used to when you start learning physics the trick is to see that there is one basic
introduction of physics- physics essentialswhy do most people believe physics is too hard most people get hung up by the feeling that they do not 100
what is the raw file size for an image of 80 rows and 100 columns with pixels on 14 bits and with an extra row for the headerthe minimum and maximum
infra-red ir detectorsan ir detector has an impedance of z 400j200 during design tests the detector current is measured as 4 microawhat is
for a blackbody the frequency at which maximum energy is emitted is 3 x 1013 hz a give a wavenumber for the wavelength of the infrared
unit vector which is perpendicular to the resultant of 2i3j5k and -i2j7k and passes by
two point charges q and -q are splitted by distance 2l find the flux of electric field strength vector across the circle of radius r placed with its
wave motion is the phenomenon in which the particlematter ruins at the point where it is but the disturbanceenergy get transferred from one point
relative velocity of a boat in a river flowing at a given velocity horizontallyans assume the river to be stopped and measure relative velocity of
why does the charge on the outer surface of a parallel plate capacitor doesnt change when it is connected by a battery only inner surface charge gets