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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
an 810-kg race car can drive aroundan unbanked turn at a maximum speed of 61 ms without slipping the turn has a radius
a parallel-plate capacitor has plates with anarea of 427 cm2 and anair-filled gap between the plates that is 237 mm
a charge of -2300 microc is located at 3055 m 4501 m and acharge of 1800 microc is located at -2102 m 0a find the
a 850-muf capacitor is connected to a generator operating at alow frequency the rms voltage of the generator is 410 v
a block of mass m50 kg is pulled along a rough horizontal surface by a rope the tension in the rope is 40 n and the
when an object is placed 60 cm from a converging lens it forms areal image when the object is moved to 40 cm from the
an optical fiber is 10 meter long and has a diameter of 20 mm itsends are perpendicular to its axis its index of