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two cars are traveling on a desert road as shown below after 50 s they are side by side at the next telephone pole the
a rocket ship is 80m in length when measured before leaving the launching pad what would its velocity be if a ground
the equation connecting s p and f for a simple lens can be employed for spherical mirrors too a concave mirror with a
the isotope 3215p is produced by the reaction n --gt 3215p p what must be the target
a meter stick moving in a direction parallel to its length appears to be only 40cm long to an observer what is the
an automobile can be considered to be mounted on four identical springs as far as vertical oscillations are concerned
the astronaut whose heart rate on earth is 65 per minute increase his velocity to v95c what is now his heart rate as
a 1000 hz sound travels through pure oxygen the wavelength of the sound is measured to be 065m what is the speed of
the laser used in cornea surgery to treat corneal disease is the excimer laser which emits ultraviolet light with a
a hydraulic cylinder with a radius of 00281 m has a piston on the left end and a safety valve at the right end the
a show that the density of an ideal gas occupying a volume v isgiven by rho pmrt where m is the molar mass show this
a a very powerful vacuum cleaner has a hose 269 cm in diameter with no nozzle on the hose what is the weight of the
a commuter train blows its horn as it passes a passenger platformat a constant speed of 300 ms the trainhorn sounds at
as soon as a traffic light turns gree a car speeds up from rest to500 mih with constant acceleration 900 mihr s in
the bullet train the shinkansen the japanesebullet train runs at high speed from tokyo to nagoya riding onthe
a test rocket is firedvertically upward from a well a catapult gives it an initial speedof 798 ms at ground level its
a tourist drops a rock from rest from a guard rail overlooking a valley what is the velocity of the rock at 40s what is
a rubber balloon is rubbed against a wool sweater and acquired a charge of -16 muc how many electrons were transferred
a long conducting rodsuspended by insulating strings assume that the rod is initiallyelectrically neutral for
kenny pulls with a force of 850 n justin pushes with a force of 650 n the crate weighs 1250 n and sits on a ramp that
a piece of ice of mass 00240 kg at an initial temperature of-110o c is placed in a well-insulated cup containing0100 kg
two boxes are seen to accelerate at the same rate when a force fis applied to the first box and 4f is applied to the
a charged water droplet of radius 21 mm remains stationary in airif the electric field of the earth is 15100 nc how
the drawing shows four point charges the value of q is 206 microc and the distance d is 098 m find the total potential
a stone thrown vertically upward with a velocity of 143 msfrom edge of a cliff 79m high from its highest point it then