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1 a simple harmonic oscillator has a potential energy of 25x2 joules a kinetic energy of 05v2 joules where x is the
a 600 kg bowling ball is rolling at 900 ms it collides with a 150 kg bowling pin at rest after the collision the pin
a space probe with a rest mass of 81times107kg and a speed of 050c smashes into an asteroid at rest and becomes
a block of mass 4 kg is compressing a spring with k2500 nm a distance of 03 m the block is then released and moves
a 15-kg playground ball is moving with a velocity of 30 ms directed 30deg below the horizontal just before it strikes a
an object moves at a constant velocity of 11 ms to the southwest for an inverval of 20 s halfway through this interval
a solenoid 130 m long and 270 cm in diameter carries a current of 120 a the magnetic field inside the solenoid is 150
a long vertical wire carries an unknown current coaxial with the wire is a long thin cylindrical conducting surface
a satellite of mass 250 kg is launched from a site on the equator into a circular orbit at 4000 km above earths surface
in a location where the speed of sound is 346 ms a 2000 hz sound wave impinges on two slits 30 cm aparta at what angle
a satellite of mass 240 kg is in a circular orbit of radius 868 x106 m around a planet if the period is 9030 s what is
together two students exert a force of 640 n in pushing a car a distance of 30 ma how much work do the students do on
a 4kg cart is initially moving at 3ms on a frictionless track it then hits an incline and stops 2m latera what is the
a person moves a full sams club shopping cart mass800 kg from rest to a velocity of 130 ms over a distance of 180
a lantern with a 6v 05w bulb uses a battery with emf 6v and internal resistance 3 ohms how much power is actually
a model-train transformer plugs into 120-v ac and draws 041a while supplying 78a to the trainwhat voltage is present
consider a 615-cm long lawn mower blade rotating about its center at 3230 rpma calculate the linear speed of the tip of
determine the magnitude of the force on an electron traveling 785times105ms horizontally to the east in a vertically
an rlc circuit has a sinusoidal voltage supplied to it at 632 khz with a peak voltage of 748 v a 25 k resistance a 16
a student is reading a lecture written on a blackboard the lenses in her eyes have a refractive power of 5805 diopters
a solenoid is designed to produce a magnetic field of 250times102 at its center it has a radius of 170 and a length of
in many cars the passengers side mirror has the following warning objects in mirror are closer than they appear
eight 65 -w christmas tree lights are connected in series to each other and to a 120 -v sourcewhat is the resistance of
a laser emits a narrow beam of light the radius of the beam is 15 mm and the power is 29 mw what is the intensity of