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a 100 kg object undergoes an accelerationof 21 ms2 what is the magnitude of the resultant force acting on it if this
a rotating wheel requires 500 sto rotate 300 revolutions itsangular velocity at the end of the 500 s interval is 990
the magnetic flux passing through a single loop in a transformer changes at a rate of 07 wbs the primary coil has 182
two parallel wires are 61 cm apart each wire is 4 cm long one wire is a carrying a current of 23 a and the other wire
a passenger on a stopped bus notices that rain is fallingvertically just outside the window when the bus moves with
an iron ball having a mass of 5 kg is lifted from the floor to a height of 25 meters above the floor remember kilograms
if a 600 kg car is moving with a speed of 25 ms that what is its kinetic energynbsp state your answer in joulesnbsp
a bullet of mass 77 g is fired into aninitially stationary block and comes to rest in the block the block of mass 121
on a banked race track the smallest circular path on which cars can move has a radius of 124 m while the largest has a
a centrifuge is a device in which a small container of material is rotated at a high speed on a circular path such a
true orfalse1 when electrons are moving from right to leftin a conducting wire the electric field is directed toward
true or false1 current density is a measure of the amount of current flowing through a volume2 the conventional
a 554 g arrow traveling at 647 ms hits a bale of hay and stops after entering 037 m into the haynbsp assuming constant
estimate the rms electric field in the sunlight that hits mars knowing that the earth receives about 1350 wm2 and that
four 12 kg masses are located at thec orners of a square 080 m on eachside find the magnitude and direction of the
calculate the final velocity of the electron beam in a crt as itimpinges upon the screen if the voltage between the
the ammonia molecule nh3 has a permanent electric dipole moment equal to 147 d where 1 d 1 debye unit 334 x 10-30 c-m
a satellite is in an elliptical orbit at altitudes ranging from 250to 890 km at the high point its moving at 723 kms
a shell is shot with an initial velocityv0 of 15 ms at an angle of theta0 60degwith the horizontal at the top of the
a thin sheet of transparent material in air with refractive index154 is illuminated by monochromatic light of
if global warming occurs over the next century it is likely that the polar ice caps of the earth will melt and the
sources a and b emit long-range radio waves of wavelength 540 mwith the phase of the emission from a ahead of that from
a rectangular billboard in space has the dimensions 10 meters by20 meters how fast and in what direction with respect
the handle of a 22-kg lawnmower makes a 35 degree angle with the horizontal if the coefficient of friction between the
the ammonia molecule nh3 has a permanent electric dipolemoment equal to 131 d where 1 d 1debye unit 334 multiplied